Alternatives to SOGo

MobiOffice (formerly OfficeSuite) is an easy-to-use office suite alternative, used by over 250 million users across 195 countries. Available on Windows, Android, iOS, and macOS, MobiOffice includes MobiDocs, MobiSheets, and MobiSlides. MobiOffice helps you manage text documents, spreadsheets, and presentations with ease. It's compatible with all major file formats including Microsoft Office (DOCX, ODT, PPTX), Google (Docs, Sheets, Slides), Apple iWork, and more. Explore each component: MobiDocs: Create and modify documents with comprehensive formatting options. MobiSheets: Simplify data management and analysis to visualize insights and generate reports effortlessly. MobiSlides: Craft impressive presentations with customizable templates and multimedia capabilities. MobiOffice integrates with MobiDrive, MobiSystems’ cloud storage solution for easy document saving and synchronization. Try it free for 7 days to see how this office suite meets your needs. Optimized for all major platforms, MobiOffice’s components - MobiDocs, MobiSheets, and MobiSlides - are available as a complete suite or as standalone apps on Windows, delivering tailored and affordable solutions that suit individual needs.

We offer a digitally sovereign solution that allows you to keep track of your e mails and calendars, organize your tasks, and stay in touch with colleagues via video conference. Kopano Groupware, an e-mailing and calendaring system that can be operated digitally sovereign, is available. It has similar functionality to Microsoft Outlook and Exchange. Kopano Groupware can be used with more than 100,000 users. Kopano Groupware provides users with e-mail and calendar access. It connects teams and allows them to communicate and share their organizational data across all devices. Data can be edited together in public folders, or shared with others using your own inbox.

The best email client for Windows or macOS will boost your productivity and increase your email efficiency. eM Client is a fully featured email client that has a simple and clean interface. It offers features for tasks, calendars, online meetings, contacts, notes and chat. Schedule online meetings with integration with Zoom, MS Teams, Google Meet and more. Use cloud attachments to keep control over your files via Dropbox, Google Drive etc. eM Client is compatible with every email service that can use IMAP, POP or Exchange Web Services protocol. This email client is compatible with Google Workspace, Microsoft 365 Outlook, Exchange, and many more. eM Client improves email communication for both professionals, businesses and home users. It includes advanced features such as server-side search, instant message translation, "Snooze" and "Watch for replies", synchronized tags, and easy email encryption (PGP/S/MIME). Ensure privacy with automatic blocking of mail-tracking pixels. You can also customize the look and available features to make sure it works best for your specific needs - create your own theme or select one of the pre-set ones, customize your toolbar, shortcuts and message list.

MailEnable is a complete solution that provides secure email and collaboration services. MailEnable is the most popular Windows Mail Server Platform according to a recent independent survey. MailEnable is a solution for small businesses and hosting companies that provide email services to thousands end users. MailEnable is a Windows Mail Server with features similar to Microsoft Exchange. It offers powerful messaging services such as Exchange ActiveSync, IMAP and SMTP and collaboration tools like calendaring, contacts, tasks, and notes.

SmarterMail is the ideal Microsoft Exchange alternative. First, it's the only business email server on the market that offers native support for the protocols that power Exchange: MAPI, EWS, and EAS. It does this without the need for any additional software or plug-ins for Microsoft Outlook or other clients -- desktop and mobile! Best of all, it offers all of the features of Exchange, but at a FRACTION of the cost. In addition, features like audio and video group chat, and Online Meetings for team meetings and group collaboration are included at no extra charge. It's designed to provide the functionality businesses need, without sacrificing secure, reliable access to business, and personal, communication.

Cyrus IMAP serves as an email, calendar and contacts server. Cyrus is open source and free. Features: Speed up Security Efficiency Search Engine CardDAV and CalDAV Support Data storage that is robust Replication Scalable for large installations Sieve provides flexible filtering support Supports anti-spam and antivirus toolkits Handles deliverability: SPF, DKIM, DMARC Cyrus SASL offers a wide range of authentication options JMAP Support List of standards supported

FairEmail is simple to set up and works well with almost all email providers including Gmail, Outlook, and Yahoo! FairEmail may be right for you if your privacy is important to you. FairEmail is an only email client, so you will need to provide your own email address. FairEmail doesn't support non-standard protocols like Microsoft Exchange Web Services or Microsoft ActiveSync. Although most features are free, it is not possible to support and maintain FairEmail over the long-term. Below is a list of pros features. This app is minimalistic in design so you can focus on reading and writing messages. This app will start a foreground service and send you a notification with a low priority status bar to ensure that you don't miss any new emails.

Secure, enterprise-style email and collaboration without the high price. Kerio Connect offers all the functionality and features for collaboration and messaging without the complexity or high price tag of other systems. Email integration includes shared calendars, scheduling, contacts management and tasks. It also integrates with instant messaging and shared folders. Microsoft ActiveSync allows you to sync messages directly to your mobile device. Instant Messaging can be used from any 3rd party chat/IM application on mobile and desktop. Kerio Connect can be installed in just 10 minutes. Users can also be up and running in as little as 10 minutes. Kerio Connect is available on-premises and in partner-hosted cloud environments. You can deploy for Mac, Windows, and Linux users. Full support for Outlook (Windows, Mac), and many other IMAP and POP compliant email client.

You can join Windows® clients and manage them transparently. No disruption to your users and no device or user CALs. It comes with industry-standard SMTP/POP3/IMAP mail servers, built on the most trusted technologies and protocols. It provides reliable and secure Internet access. It also helps manage the basic network infrastructure services. Get software updates up to the EOL-date for each version, and support when needed. Zentyal provides an easy-to-use Windows Server®. It is natively compatible with Microsoft Active Directory®, allowing you to add Windows®, clients to your domain and manage them without causing any disruption to your users. Zentyal comes with industry-standard SMTP, POP3/IMAP mail servers that are built on the most trusted technologies and protocols. You can use Zentyal to host mail servers, domains and directory servers with mail, or as an all-in-one server.

MDaemon Email Server supports IMAP and SMTP protocols. It delivers solid performance thanks to its feature-rich, user-friendly design. The email server software is low in total cost of ownership (TCO), and is specifically designed to meet the needs small- to medium-sized businesses. MDaemon supports multiple languages, content filtering, and multiple domains. It also offers flexible administration and an open standard design.

Mailu is an easy-to-use, yet powerful mail server that comes as a Docker image. It is open source software, which means it's free (as in free beer and free speech), and is open to external contributions. The project aims to provide people with an easily configured, easily maintained, and full-featured email server without shipping proprietary software or unrelated features that are often found in popular groupware. The main features include: Standard email server with IMAP, IMAP+, SMTP, and Submission profiles for clients Advanced email features: aliases and domain aliases. Custom routing Webmails, multiple access to webmails, and administration interface User features, aliases auto-reply and auto-forward. Fetched accounts Admin features, global admins, announcements, per-domain delegation, quotas Security, enforced, TLS, DANE MTA-STS Letsencrypt, outgoing DKIM Anti-virus scanner Snuffleupagus Block malicious attachments Antispam, auto-learn, greylisting, DMARC& SPF, anti-spoofing

Courier's mail transfer agent (MTA), an integrated mail/groupware service, is based on commodity open protocols such as ESMTP and IMAP. It also supports SSL, LDAP and HTTP. Courier offers ESMTP, IMAP and POP3 services, webmail and mailing lists within a single, consistent framework. Individual components can easily be enabled or disabled. The Courier mail module now integrates basic web-based scheduling and calendaring services into the webmail module. Soon, advanced groupware calendaring will be available. The Courier mailserver's source code should be able to compile on all POSIX-based kernels, including Linux and BSD. The Courier mailserver should also compile under Solaris and AIX with the help of Sun's or IBM’s freeware addon tools for each operating system. The Courier mailserver evolved from several related projects that were merged together (more about that later). The Courier mailserver implements SMTP extension for mailing list management.

Dovecot Pro, a full-service platform for email, delivers dynamic scaling, high performance, efficient hardware utilization, and outstanding customer support to the largest Telcos and ISPs in the world. Dovecot Pro has a 76% market share of email backends installed. Customers trust its performance. The efficient hardware utilization and advanced monitoring for statistics and administration can reduce ownership costs, save time and maintenance. Dovecot Pro can scale up to hundreds of servers, millions of users, and multiple physical locations. Its native stateless architecture allows for maximum flexibility, as each major component is able to be deployed on a dedicated node. Dovecot Pro offers industry-leading support for email standards, including LMTP (Mail Delivery Agent) and Sieve (Mail Client Retrieval).

Mail Pilot is an email app that prioritizes privacy. It helps users declutter and manage their inboxes. Its clean, focused interface allows users to prioritize the most important messages, while organizing other messages into a calm and manageable workflow. Mail Pilot supports IMAP servers of all types and keeps your emails on your device. The app is native for macOS, and it offers a task-based interface to handle emails. Users can easily sort emails into actionable task, schedule messages and archive emails, while maintaining privacy and simplicity. The app's streamlined interface has been praised for making email management efficient and visually appealing. Mail Pilot also provides a secure environment to manage personal and professional correspondence. Users can feel in control of their inboxes, without feeling overwhelmed.

RainLoop Webmail is a great choice for email solutions because it has minimal system requirements, decent performance and requires no database. Modern user interface. Complete support for IMAP and SMTP protocols, including SSL and STARTTLS. Sieve scripts (Filters, vacation message). Requirements for resources are minimal. Direct access to the mail server is possible. Mails are not stored locally on the web server. Multiple accounts can be added to the primary account. You can also access different accounts from different browser tabs simultaneously. Additional identities. Administrator panel to configure main options. Very simple installation and updating. Integration with Facebook, Google and Twitter. Manage folders. Easy customization. Multi-level caching system. Plugins can be added to the admin panel to extend functionality. Complex HTML mails rendered flawlessly Drag-and-drop for attachments and mails.

SquirrelMail, a webmail package that uses PHP standards, is written in PHP. It has built-in PHP support for the IMAP/SMTP protocols. All pages render in pure HTML 4.0 (with zero JavaScript required) to ensure maximum compatibility across browsers. It is extremely easy to set up and configure. SquirrelMail offers all the functionality you'd expect from an email client. It supports strong MIME support, address book management, and folder manipulation. Our organization needed to be able to access email and address books from anywhere in world. A web interface is the best option for this purpose, as long as the user has internet access. After looking at several open-source projects, we realized that we would need to make some major customizations in order to make it work for us.

Amazon WorkMail is a managed, secure business email and calendar service that supports both desktop and mobile client applications. Amazon WorkMail allows users to seamlessly access their email, contacts and calendars via any client application they choose, including Microsoft Outlook, native iOS, Android, and any other client application that supports the IMAP protocol. To meet compliance requirements, you can integrate Amazon WorkMail into your corporate directory. You can also use email journaling to control both the keys that encrypt and the storage location. You can also establish interoperability to Microsoft Exchange Server and programmatically manage resources, users, and groups using the Amazon WorkMail SDK.

hMailServer for Microsoft Windows is a free and open-source e-mail client. It is used by Internet service provider, companies, government, schools, and enthusiasts around the world. It can be easily integrated with most existing webmail systems. It offers flexible spam protection based on scores and can be attached to your virus scanner for scanning all incoming and departed email.

Oracle Communications Messaging Server, a standards-based Internet message server, is designed to handle high-capacity messages reliably for service providers and customers. Messaging Server supports several email protocols, and can manage embedded sound, graphics, videos, and other file formats and files.

Dovecot is a great choice for both small- and large-scale installations. Dovecot is one of the fastest IMAP servers, and it still supports the standard Maildir and mbox formats. Dovecot's high performance is due to the transparent indexing of mailboxes. Dovecot is compliant with standards. Dovecot is compliant with all IMAP server standards. Dovecot's Indexes are automatically optimized. They contain only what the client of the user needs most often, nothing more or less. Dovecot has self-healing capabilities. It fixes most of the problems that it finds on its own, like broken index files. The problems are logged, however, so that the administrator can try to determine what caused them later. Dovecot strives to be administrator-friendly. The common error messages are as clear as possible.

WinGate Proxy Server, a highly capable HTTP Proxy Server, SOCKS Server, integrated Internet Gateway and communications server, is designed to meet today's access control, security, and communication needs. WinGate Proxy Server offers a wide range of features and license options that allow you to adapt to your budget. WinGate Proxy Server can share any type of Internet connection. This allows multiple users to surf the internet, retrieve email, and use other internet programs as if they were connected directly to the Internet. WinGate Proxy Server will make sure that your connection is as fast and reliable as possible, no matter if it's a dialup modem or high-speed fibre. WinGate Proxy Server supports many Internet protocols, including messaging software, FTP, SSL, and Web browsers.

You can offer a high-value Outlook experience with push mail, PIM and group calendaring. With lower server counts and attractive subscription pricing, you can increase margins. A Linux-based platform will help you reduce licensing costs and make your team's existing skills more valuable. Scalix starter packs provide small businesses and organizations with a robust, single-server messaging solution. Scalix small business edition, our single-server solution for small businesses, is the Scalix small business edition. It offers a wide range of business functionality, including the ability to quickly recover deleted items on a user specific basis, wireless device support, and many other features.

An operating system and applications are included with your phone, tablet, or computer. Why not put them on your server as well? ClearOS is being redefined by HPE with the introduction of HPE ProLiant servers. ClearOS is an open-source, affordable operating system that is simple and easy to use. It features a graphical web-based user interface, an application marketplace, and over 100 apps. There are more being added daily. Open source software allows you to choose the applications you want and only pay for what you use. ClearCenter and HPE make it possible for small, home-based, remote, or branch offices to have a server available immediately, without additional cost. ClearOS and HPE ProLiant combine to offer a simple, secure, and affordable experience. It's never been easier to create the IT solution that's right for you.

Relay restrictions have been completely rewritten with an easier-to-use interface that allows for finer control of relay security. EIMS has its own domain name resolver, which fixes bugs in the Open Transport DNR as well as performance issues with the OS X DNR. The new DNR currently does not support non-recursive domain names. SMTP Submit Port, this is a secondary SMTP port that runs on TCP port 587. It currently functions exactly the same way as the standard SMTP. This is useful for clients who are behind an ISP which blocks port 25 access. Sending Setup option to set maximum recipients per message. You can now turn off the Expand SMTP addresses option. This was always on in EIMS 3.1. The SMTP (both port 25 or 587) server now reports Telnet and connections that appear to be port scans (connections with no data sent and where it doesn't stop timer).

XgenPlus is the most advanced enterprise email solution. Communicate and collaborate with it. It is the first IDN Email Server to provide EAI (Email Address Interization), i.e Linguistic Email Address, like (Email address written in Hindi). It is an email management software that can be used by any enterprise, SME, PSU, or government. department. It supports all the basic features like POP, IMAP and webmail, calendars, contacts, SMS, scheduling and security. Key Features IDN Email - The only internationalized domain name email hosting server Policy for auto archival and mail retention Merge / de-merge email account Group Mail with a Tracking Report Broadcast email Schedule Email / SMS & Other... Benefits: Reliable - 99.99% uptime Scalable: Flexible to meet the needs of your organization Robust Security: Inbuilt Antispam software Live Chat, On-Call, and Offline Support Available 24x7 Easy Data & Administrative Control Better Storage

Sylpheed is an easy-to-use, lightweight, but powerful e-mail client. Sylpheed offers an intuitive user-interface. Sylpheed's keyboard-oriented operation makes it easy for everyone to use. Sylpheed can be used on Windows, Linux, BSD and other Unix-like platforms. Sylpheed uses the GTK+ GUI toolkit. Sylpheed 2.4 or later is recommended. Sylpheed 2.6 or later is recommended. Sylpheed is free software distributed under GNU GPL (the library is GNU LGPL). It is free to use, modify, and redistribute under the license. Sylpheed uses a 3-paned display, similar to popular e-mail clients like Outlook Express and Becky. It is easy to use the first time. Sylpheed's user interface is continuously improved and Sylpheed achieves attentive and comfortable operation.

Secure and private email, calendars, and other information. 100% Free and Open Source Software (FOSS). All storage and communication can be done using open standards and formats. No vendor lock-in. All data are stored under Swiss jurisdiction. Without user consent, data are never given to third parties. GDPR, HIPPA, and PCI compliant. Built from the ground up. Perfect forward secrecy (PFS) is supported. End-to-end encryption is available. There are no back doors. Our documentation includes answers to the most common questions, as well as many other useful information. Our Knowledgebase has the answers to most frequently asked questions. You can always contact support if you don't find the answer to your question in our documentation.

Mailcow: Dockerized is a free and open source groupware/email system based on Docker. Mailcow is based on a number of well-known and long-used components that, when combined, result in a carefree email server. Each container represents an application connected by a bridged network.

Trojita, an email program ("client") that provides fast and efficient access over IMAP protocol to mailboxes, is called Trojita. An IMAP mail server stores messages, and clients can fetch them to their local computers when requested. It places efficiency, speed, and open standards first. Trojita is multi-platform and works well on all platforms, from large desktop computers to small smartphones. Trojita is an independent program and not part of any "personal information management" suite.

Claws Mail, an email client and news reader, is based on GTK+. It features a quick response, graceful, and intuitive interface, easy configuration and intuitive operation. There are many features, extensibility, robustness, robustness, stability, and extensibility. Both new users and those who have used other email clients in the past will be familiar with the interface. The keyboard allows you to access almost all commands. The standard MH format is used to manage messages. It offers fast access and data security. You can import emails from any email client and export them as well. Extra plugins provide many additional functionality such as an RSS aggregator and calendar or laptop LED handling. Claws Mail is available under the GPL.

Who reads your mail? Regular mails can be read by you, the recipient, and possibly other recipients. End-to-end encryption mails are only readable by the sender and receiver. Our iOS-App Letterbox is compatible with the majority of mail providers, and supports OpenPGP encryption. Letterbox is similar in appearance to other mail apps, but it also indicates the security status of incoming and e-mails. We distinguish between confidential and unsecure mails. Letterbox is a free, open-source mail client for iOS that is part of a research project at Freie Universitat Berlin in Germany. Letterbox is currently under development, but you will soon be able to use it on your device using Apple's TestFlight application.

KMail is Kontact's email component. It is integrated with KDE's personal information manager, Kontact. Default settings are better than compromising on privacy or security. End-to-end encryption OpenPGP and S/MIME support is included. A wizard for setting up and key generation assists users in getting started. SSL/TLS encrypted transport encryption is supported. There are also a variety of authentication methods like OAuth2 or GSSAPI (Kerberos). Strong isolation of HTML content. KMail makes sure HTML emails are not exposed to the outside world. KMail's phising protections warn you about suspicious links in such email. Spam protection is available on your email server. KMail can integrate popular spam-checkers like Bogofilter or SpamAssassin locally.

Nine is a mobile business solution that combines email, calendars, contacts, tasks and notes to keep your business synchronized across all devices. It provides robust support for personal and professional productivity. Users can manage their workflow anywhere. Nine is compatible with IMAP servers and Exchange servers. Direct Push technology allows for real-time synchronization of emails, tasks, calendars and notes. Nine Work is designed for enterprise use. It integrates with Android Enterprise solutions and MDM software to ensure secure synchronization of corporate data with Exchange Server. The app allows for easy management of both personal and corporate schedules. It also integrates tasks and emails and offers smooth contact sync. Nine's intuitive interface allows users to manage emails and notes related to work with ease. It's for professionals who require mobile access to business communications.

Horde is the world's most flexible groupware, making it the ideal platform for building your business productivity software. Horde is the only open source groupware that connects to and supports more backends than any other system. This allows you to continue using your existing userbase, and your users will not need to remember any new passwords. Horde's feature-set rivals that of the largest enterprise email system. We have a feature set that is superior to any other competitor in our primary apps, such as mail, calendar, and address book, and even more in secondary apps, such as time tracking, wiki and ticketing.

BlackBerry® Works is a multi-OS, all in one mobile productivity app for business users. It integrates email and calendar with contacts so that enterprises can mobilize their workforce effectively. BlackBerry Work streamlines business workflows through document access and full fidelity editing for Microsoft® Office documents. Mobile work is also possible. BlackBerry Work offers a modern, consistent interface across devices and fast performance optimized to mobile interactions. Users get rich, seamless experiences wherever they go, making them just as productive, if not more, than on desktops. BlackBerry Work is not just for business users. It also meets the strictest security requirements. BlackBerry Work is part BlackBerry® Spark™, which provides a comprehensive endpoint to endpoint security approach. Next-generation containerization allows IT to separate business and personal data, eliminating the risk for corporate data leakage.

OpenSMTPD implements the server-side SMTP standard as defined in RFC 5321 with some additional extensions. It allows machines to send and receive emails from other systems that use the SMTP protocol. OpenSMTPD was born out of dissatisfaction over other SMTP implementations. It is a complete SMTP implementation. OpenSMTPD was developed primarily by Gilles Chehade, Eric Faurot and other OpenBSD hackers.

MailSite Fusion is a Windows email, calendar, and contact server that can push to all types smartphones. It also has full native Outlook sync and a sophisticated AJAX client. It can also share calendars and contacts with other clients. Readers of Windows IT Pro Magazine have voted MailSite as one of the top three mail server products for three consecutive years. Your organization's email services are vital. You need to ensure that you choose a high-quality product from a company that has a track record in communication software. Why this mail server? Rockliffe is sensitive to your concerns and has been developing and refining email security software and email servers for businesses and service providers since 1995. MailSite Fusion was built from the ground up to meet your most important requirements.

Mailtraq Professional is a complete email server. It is a complete email server that does everything you require at a low price and without hassles. Mailtraq is a great Microsoft Exchange Alternative. It's easy to install and manage. Mailtraq's low license cost, lack of server-CALs and stability make it the ideal email server software for SMBs and SOHOs. Email is the lifeblood of any company or organization. The location of these messages is crucial to the long-term success of your business. Running your own email server is not without its hassles and costs, but it allows you to control who has access. If you use the service of your ISP, their system administrators will be able to see and read all your messages. If you use SAAS for a hosted service and if using a Cloud provider, you don't only not know who is reading your emails, but you don't even know what country it is stored in.

James is the Java Apache Mail Enterprise Server. It is based on a modular architecture that consists of a set of modern, efficient components. This provides a stable, secure and extendable Mail Server running on JVM. You can create your own solution for email treatment using the Inversion of Control platform and customize filtering and routing rules with the James Mailet Container. The Apache James project combines the libraries that make up James to create running services. These are available for download from the Apache mirrors.

Your customers can enjoy secure, business-level email hosting and other value-added services. This is a great solution for SPs and can be used by thousands to millions of users. You can acquire new customers by offering a premium mail server solution that allows you to automate your existing infrastructure. A secure and powerful mail server allows you to manage your email, share and organize your calendars, and sync your mobile devices. This is the perfect solution for businesses of any size. Axigen is very knowledgeable. Take a look inside to see which hats it has on. You can manage your email and make it easy to get things done with tasks, calendars, and notes. Desktop usability is possible in your browser using keyboard navigation and shortcuts. Drag-and-drop, live email list view, frequent folders. Email filters. Out-of-office messages. Individual blacklist /whitelist.

Open source softwares are the best way to build a mail server. Works on CentOS Stream (Rocket, Alma), Debian, Ubuntu and FreeBSD. You can deploy a FREE, OPEN SOURCE, FULLY FURNISHED, FULL-FEATURED email server in a few minutes. We did all the heavy lifting by combining open source components and applying best practices. Our product takes care of all the major tasks. We also offer professional support in case of any problems. You can control email security and view the transaction log. No one else can read the content of your messages. All components in iRedMail come from open source softwares. You get bug fixes and updates directly from the Linux/BSD vendors you trust. iRedMail allows you to build a mail server using open source softwares.

There is no office. That is the only rule. TeamChat for project teamwork, business email, TeamChat to collaborate on office documents, and online meetings. All this and more in our secure cloud at half the cost. Chat in groups organized around projects, upload files and mention coworkers. Comment on emails posted by others. Pin important posts. Integration with email allows you to share received messages directly into TeamChat room to catch the attention of colleagues. Desktop Client and Desktop Office documents for Windows and Linux will help you increase your office productivity. You can choose to purchase the entire Suite or just the apps you need.

Exim is a mail-transfer agent (MTA), which can be used in Unixllike operating system. Philip Hazel wrote the first version in 1995 for the University of Cambridge Computing Service's email systems. Exim is available under the GPL and is free to download and modify. Exim is somewhat similar to Smail 3. However, it has diverged from it and now exceeds it in ease-of-use and flexibility. Both follow the Sendmail design model, where one main binary controls all facilities of the MTA. Some consider this monolithic design to be less secure and slower. However, Exim's security record and speed are better than Sendmail. It excels in advanced areas like address routing, queue handling, and testing. Exim does not have a Graphical User Interface (GUI), but some Linux distributions do.

K-9 Mail is suitable for both novice and experienced users. It offers many features to suit everyone's needs. K-9 Mail has controllable debug logging. To help diagnose problems and errors, users can turn on logging. We don't have an automatic logging system that logs all activity to a central server as we are an open-source privacy-conscious project. Although this would make things easier, it would be expensive to host the server and could compromise the privacy of our users. Communication security is becoming more important. K-9 Mail provides intuitive e mail security in many ways. This includes secure login to your email server and the security of the email itself.

Zimbra 9: Collaboration Superheroes! Users can seamlessly switch between desktop, tablet, and mobile browsers while enjoying consistent email and collaboration experiences. It is extensible and offers best-in-class integrations with Slack and Dropbox. There are many more in development. Zimlet framework allows you to customize Zimbra according to your needs. Zimbra's reliable server infrastructure ensures that customers have the security, privacy, and data sovereignty they expect. Upgrade to Zimbra 9 is easy and requires no data migration. Zimbra 9's responsive, modern UI is built on Zimbra’s reliable server infrastructure. This ensures the security, privacy, and data sovereignty that you have come to expect from Zimbra. Zimbra 9 is flexible, extensible and unlike competitors that use closed platforms. Get out of Microsoft and Google and integrate with third-party collaboration services such as Dropbox, Zoom, and Slack.

Reinventing email so it can live in your inbox This powerful mail tool is a standout and can be used to send and receive well-structured email communications. All your emails sync Manage all your contacts and emails from multiple accounts in one place. The best free email client. Highly customizable. The mailtrim, the best outlook alternative, gives your email a fresh look. You can choose from a variety of customizations to create a unique business email. The best free email client. Private and secure. You have 24/7 control over the emails you send or receive. This secure email client can be purchased and pgp encrypted to hide your emails. It has a sophisticated and elegant UI. High user-experience and minimally designed interface. You can find everything quickly! This is the best free email client that you can use for personal or professional use. It has an intuitive user interface and is easy to navigate. This easy-to-use email client for mac and windows allows users to send smart messages.

Mailbird is a desktop email management client that has won numerous awards for Windows 7, 8, and 10. Mailbird is a desktop email client that works seamlessly with any IMAP or POP3 email provider. It is also ideal for Outlook users and G-Suite users (now Google Workspace), with Mailbird for Mac following soon. Mailbird users can manage all of their email accounts from one pane. This allows them to keep personal and business emails separated while simultaneously managing them from a single interface. Mailbird is a unique social media app that enhances the user experience. It integrates with popular apps such as Asana, Google calendar, Dropbox, file sync and sharing, WhatsApp, Slack, and Google Hangouts to allow video calling and instant messaging.

Analyzes all web traffic, blocks selected websites via HTTP or HTTPS using Squid proxy. Integrated with ClamAV antivirus. Multi-domain web server with ready-to-use LAMP stack. Virtual hosting allows you to host multiple domains on one server. NextCloud allows you to access your files from anywhere, whether you're on the internet, your computer, or your mobile device. Mattermost allows you to create a private Slack-alternative. Secure team collaboration is possible with this open-source messaging platform. Cockpit is a modern web interface that simplifies administration tasks. It's easy to install and very fast. CentOS/RHEL is a popular server distribution that is trusted by routine security updates and has rock-solid stability.

Proton Mail was founded in Switzerland, and all of our servers are located there. All user data is protected under strict Swiss privacy laws. All emails are encrypted automatically using end-to-end encryption. This means that even we cannot read or decrypt your emails. Your encrypted emails cannot therefore be shared with any third parties. To create your secure email account, you don't need to provide any personal information. We do not store IP logs that can be linked to your anonymous account. Your privacy is paramount. Email privacy should be accessible to everyone, according to us. Our code is open-source and basic Proton Mail accounts come free. Support the project by donating to it or upgrading to a paid account. Proton Mail is compatible with all devices without the need for software installation. Proton Mail Business allows you to keep your business email address. You can send and receive encrypted email both within and outside your organization.

Mail-in-a Box lets you create your own mail service in just a few simple steps. It's like creating your own gmail that you can control from the top down. Mail-in-a Box is a cloud computing service that turns a new computer into a functioning mail server. You don't have to be a tech expert to set this up. Mail-in-a Boxes include webmail, an IMAP/SMTP Server and desktop mail software. It also includes calendar and contacts synchronization. The box includes standard mail functionality such as spam protection (spam filters and greylisting), email client auto-configuration, mail filter rules, and automated backups via Amazon S3 or other services. When you choose to let it be your nameserver, the box will also automatically configure DNS records that are important for mail deliverability, security, and other factors, such as SPF, DKIM DMARC and MTA STS. DNSSEC (with DANE TLSA enabled) provides a higher degree of protection when enabled.