Best Email Security Apps for Android of 2025

SpamTitan email security protects businesses, schools, smbs and MSPs from spam. SpamTitan email security protects against spam, phishing, day-zero attacks and viruses, malware, ransomware and other threats to email. It helps to control mail flow, clean it, protect against spam, and protect against unwanted email. We offer easy-to-use, yet powerful email security for businesses, smbs, and MSPs that is Office365-friendly. SpamTitan Email Security is available for a free, fully supported trial. SpamTitan – Premium functionality included * CEO Impersonation protection * Spearphishing Protection/ Phishing * Link analysis * Full Sanding * Zero Day Attacks protection * Mail Spooling * Spoofing protection * Ransomware and Malware Protection * SPF/DKIM/DMARC checking * Encryption * Fully multi-tenant environment * Ability to rebrand entire UI * Full REST API * Set up documents and support SpamTitan Email Security is the best solution in the G2 Crowd Email Security. Start your free trial today!

Our state-of-the-art protection system offers robust defense against phishing, ransomware, and the ever-changing landscape of email threats. Seamlessly integrating with your current infrastructure, our solution fortifies your security measures, whether implemented in the cloud or on-site.

ESET Protect Advanced offers a comprehensive cybersecurity solution for businesses of any size. It offers advanced endpoint security against ransomware and zero-day threats. It also includes full disk encryption to ensure legal compliance and data security. The solution uses adaptive scanning, cloud sandboxing and behavioral analysis for proactive cloud-based threats defense. Mobile threat protection secures Android and iOS with anti-malware and anti-theft. It also offers cloud app security, mail server protection, vulnerability and patch management, and cloud app protection. Multi-factor authentication and extended detection and reaction (XDR) improve threat detection and response. The solution provides a single pane of glass remote management to provide visibility into threats and users. It also offers advanced reporting and customized notifications.

Mailfence is an encrypted email provider that uses OpenPGP-based encryption and digital signatures. Mailfence offers a variety of features that allow for collaboration without compromising security or convenience. Mailfence documents allows you to securely store and edit documents. You can also share documents with your team by pressing a button. Mailfence calendar will help you keep track of all your tasks, meetings, events, and other important information. Mailfence contacts will save your contacts and allow you to create mailing lists to maximize efficiency. Mailfence was designed to be fully interoperable. This means that you can sync Mailfence with any service. Mailfence offers fully customizable whitelabel versions for its Mailfence interface. Mailfence donates 15% from PRO subscriptions to IFF or EDRI to support the fight for Online privacy.

Trustifi provides industry-leading email security solutions that help small, medium, and large enterprises manage threat detection, regulatory compliance and data encryption. Easily deployable on Outlook, Gmail, and any other email server via relay **Advanced Threat Protection** -Malware/ransomware virus detection and BEC attack prevention and alarms **Data Loss Prevention** --100% compliant HIPAA/HITECH and PII, GDPR. FSA, LGPD, CCPA and more **Encryption** -NSA-grade. Only select Enterprise customers have access the company branding and product white-labeling. One-on-one training for teams. There are many encryption requirements, so there is no one-size-fits all solution for email security. Many times, customized solutions are available on request and often free of charge.

Everyone deserves secure email communication, and Tutanota stands as the most robust option available, designed for ease of use while prioritizing privacy. By signing up for free, you can regain control over your inbox. With features like end-to-end encryption and two-factor authentication, the security of your emails is unprecedented. The integrated encryption ensures that your mailbox is solely yours, preventing anyone from accessing or deciphering your information. Being open source allows security professionals to audit the code that safeguards your emails, enhancing trust. Our Android application is free from Google services, positioning Tutanota as the premier open source email platform. Accessible via both iOS and Android, your secure messages are always at your fingertips. Our swift web client and comprehensive applications ensure that sending encrypted emails is a seamless experience. We prioritize your email safety by providing a service free from intrusive advertisements, continuously working to deliver encryption that allows you to concentrate on what truly matters. From our straightforward and minimalistic interface to customizable options, Tutanota is dedicated to meeting your email requirements effectively.

Zivver is the digital communications platform that powers the next generation of secure digital communication. It is simple, smart, and secure. Zivver is trusted by more than 5,000 organizations worldwide. It prevents data leaks from human error and ensures compliance. Zivver seamlessly integrates to all major email clients, including Outlook, Gmail, and Microsoft 365. It features unrivalled zero-keys encryption and smart features like contextual machine learning powered business rule generation. Zivver allows you to securely share large files upto 5TB via your existing email client. Zivver is fully in compliance with all major data security standards including ISO 27001 and NTA 7516, GDPR and HIPPA.

Centrally manage email signatures for all users on all their devices. The platform is built for Microsoft 365 and Google Workspace, and it has decades of experience with email signature management. Get consistent, branded and up-to-date signatures for all employees across devices, departments, and geography. Create customized and targeted email signature marketing banners below the contact details to share updates, achievements, values, promote content and much more! All with clickable call-to-actions to help you drive traffic and interest. With role-based login, the marketing or communications department can easily manage it. After the initial setup (45 min), IT has no workload. Safely hosted at ISO 27001-certified data centers (Microsoft Azure). This ensures the best, most secure data storage available – under all laws and regulations, including GDPR.

Guardian Digital protects against email threats such as phishing, zero day exploits, and crippling ransomware attacks. These are just some of the many threats email users face every single day. Email security is a business security issue, as more than 90% of cyber attacks originate in an email. A purpose-driven solution is the best way to protect email. It closes critical security gaps in Microsoft 365 and Google Workspace. It also provides remote support, expert setup and ongoing remote management. We provide real-time cybersecurity business insight to help you assess your current risk profile and protect you against the threats that all businesses face when using email.

The Accellion platform for secure content communication effectively safeguards against data breaches and compliance issues related to third-party cyber threats. Chief Information Officers and Chief Information Security Officers trust Accellion for comprehensive oversight, compliance, and control of sensitive information such as intellectual property, personally identifiable information, protected health information, and other critical data shared across various third-party communication channels, including email, file sharing, mobile applications, enterprise software, web portals, SFTP, and automated inter-business processes. Users can confidently click the Accellion button, assured that it represents a secure method for transmitting sensitive information externally. With deployment options that include on-premise, private cloud, hybrid, and FedRAMP solutions, the Accellion platform offers the necessary security measures and governance that CISOs require to safeguard their organizations, reduce risks, and comply with stringent regulations like NIST 800-171, HIPAA, SOX, GDPR, and FISMA among others. Accellion has successfully protected over 25 million users across more than 3,000 organizations, showcasing its effectiveness and widespread adoption in the industry. The platform's robust features continue to evolve, ensuring organizations remain ahead of emerging cyber threats.

ESET PROTECT Complete serves as a holistic cybersecurity solution aimed at securing business endpoints, cloud services, and email infrastructures. It employs cutting-edge measures to defend against ransomware and zero-day vulnerabilities, utilizing cloud sandboxing technology alongside machine learning-enhanced detection methods. Additionally, it offers full disk encryption features that support adherence to data protection laws. The solution extends its robust protections to mobile devices, file servers, and email servers, integrating anti-malware, anti-phishing, and anti-spam functionalities. With its centralized management console hosted in the cloud, organizations can efficiently deploy, monitor, and respond to security threats. Furthermore, it includes essential vulnerability and patch management tools, ensuring that any software weaknesses are swiftly detected and rectified. This comprehensive approach not only fortifies the organization's cybersecurity posture but also simplifies the overall management of security protocols and responses.

ESET PROTECT Elite serves as a top-tier cybersecurity platform designed for enterprises, seamlessly combining extensive detection and response capabilities with a robust multilayered defense system. Utilizing cutting-edge techniques like adaptive scanning, machine learning, cloud sandboxing, and behavioral analysis, it effectively combats zero-day vulnerabilities and ransomware threats. The solution delivers modern endpoint protection for both computers and mobile devices, along with server security that ensures real-time data safety and mobile threat defense. Additionally, it incorporates full disk encryption, which aids organizations in meeting data protection compliance requirements. ESET PROTECT Elite also boasts powerful email security features that encompass anti-phishing, anti-malware, and anti-spam measures, while providing protection for cloud applications such as Microsoft 365 and Google Workspace. Its vulnerability management and patch capabilities automate the identification and remediation of security flaws across all endpoints, fostering a proactive approach to cybersecurity. Overall, ESET PROTECT Elite is a comprehensive solution that addresses the evolving challenges of modern cybersecurity threats.

WikiLocks works in the same way as you do. It works within your most used applications. Select the data you wish protect, then assign access to individuals and groups. Finally, distribute the newly protected document. No matter how the document is accessed, copied or pasted, protection will continue to follow it throughout its lifecycle.

The Secure Email Gateway serves as a robust solution for enterprises, employing a complex set of spam filters, antivirus tools, and content analyzers to block unwanted emails from infiltrating your organization's network. Given that security requirements can vary among different team members, it is possible to implement various security protocols tailored to specific roles, such as those in finance or sales. Dome Anti-spam offers the flexibility to create diverse profiles, each equipped with distinct security functions and limitations. Additionally, containment features safeguard against emerging threats like ransomware and zero-day attacks. The Valkyrie file verdict system assesses unfamiliar files, allowing users to access and utilize attachments with complete assurance against infections. Comodo's innovative containment technology guarantees that all potential risks are isolated before they can affect endpoints, thus eliminating any chance of malware infection, regardless of its origin. This comprehensive approach not only enhances security but also instills confidence in employees to perform their tasks without fear of digital threats.

Libraesva Email Security shields your organization from both established and emerging email threats, ensuring that only genuine messages reach you. It offers top-notch email protection through the fusion of cloud email and a secure email gateway, enhanced by Libraesva's distinctive Adaptive Trust Engine. This engine utilizes AI to comprehend typical behavioral patterns within organizations and among individuals, continuously evaluating the trustworthiness of business interactions and preemptively flagging unusual activity. Libraesva Email Security meticulously scans and sifts through all incoming and outgoing emails, identifying and thwarting advanced malware, phishing attempts, business email compromises, spam, and other risks. Its exclusive sandboxing technology disarms hazardous payloads and active content within attachments, while proactive URL analysis scrutinizes every link to shield users from accessing harmful websites.

BooleBox serves as a robust content security platform dedicated to safeguarding the integrity and confidentiality of client data against unauthorized access, employing top-tier encryption methods to shield sensitive information from cyber threats. With its sophisticated encryption technology and a range of customizable security options, users can effortlessly create, edit, share, and categorize files and folders without sacrificing ease of use. BooleBox's solutions ensure that your data remains protected across various environments, whether at the office, in the cloud, during email transmission, in collaborative projects, or on widely used platforms like Windows, Outlook, Gmail, OneDrive, and SharePoint. Recognizing the potential digital vulnerabilities that exist, we provide unparalleled protection, acting as a vigilant guardian for your data that remains with it at all times. Our commitment to safeguarding your information extends to managing substantial volumes of data across diverse business sectors. Since our inception in 2011, we have consistently delivered this essential service, adapting and evolving to meet the changing needs of our clients. Our dedication to data protection not only enhances security but also fosters trust and reliability in digital interactions.

RevBits Email Security, a next-generation email security product, aims to address major gaps in the market. Revbits Email Security uses unique algorithms, such as a page impersonation detection method, to achieve the highest level of email analysis. RevBits Email Security provides a composite probabilistic score for each email. It also includes full details for continued user education. RevBits Email Security Enhances Email Security Architecture RevBits Email Security improves email security by blocking and detecting sophisticated malicious emails that penetrate the organization's email security layer. RevBits Email Security protects the employee endpoint, the last point of email interaction.

Even if you avoid sending sensitive emails, doesn't it concern you that your email provider has access to your messages through a backdoor? They can grant access to third parties at any moment, as they are the ones who set the rules and exploit the loopholes. Have you ever considered what a single online purchase receipt can disclose about you? It can reveal your fashion preferences, your financial situation, your payment choices, your address, the type of device you use, and much more. This is quite unsettling, isn't it? Unfortunately, numerous companies and fraudsters are already exploiting this information. Every small piece of information about you is like gold to third parties, who will utilize it to better understand you, influence your purchasing decisions, and, in some cases, even impersonate you on the internet. If you believe your email service is completely secure, it might be wise to conduct a simple search; you'll find that major email providers have faced breaches. Do you still feel reassured? A straightforward, unobtrusive privacy solution exists that can safeguard your emails no matter where they are sent or received, ensuring your peace of mind.

Smartlockr is a people-centric data security platform to easily enable secure email and file sharing for an entire organization. By putting the people in an organization first, Smartlockr offers a user-friendy platform that actively helps people prevent data breaches. The reason for that is that the human error is the main cause of data breaches worldwide. Smartlockr works on and with every operating system and device. It's even available as a plug-in for Microsoft 365 (Outlook). Of course, it can be integrated into any existing systems, and it's even available as an SMTP relay service or a combination of all these options. Smartlockr can also be used to securely send and receive large files of up to 5 TB. Smartlockr is compliant with all privacy regulations and security standards like GDPR, ISO, NTA 7516.

Vade stands out as a global frontrunner in predictive email security, safeguarding 1 billion mailboxes across 76 nations. We empower MSPs and SMBs to shield their Microsoft 365 users from sophisticated email threats such as phishing, spear phishing, and malware. Organizations including ISPs, MSPs, and SMBs select Vade's innovative email security tools to defend their clientele and enterprises from these advanced cybersecurity challenges. Our AI-driven solutions are specifically crafted to identify threats that conventional methods often miss. They effectively thwart dynamic phishing attempts that evade standard defenses, as well as targeted spear phishing and business email compromise schemes. Additionally, our technology is adept at neutralizing evasive polymorphic and zero-day malware attacks, ensuring comprehensive protection for all users. With our solutions, businesses can navigate the complexities of email security with confidence and peace of mind.

INKY is an award-winning cloud based email protection software. It protects businesses against phishing attacks, as well as blocking spam and malware. INKY uses domain-specific machine-learning and computer vision to identify zero-day phishing emails and block them from reaching legacy email systems. For suspicious emails, warning banners are included in the email. In minutes, integrates into Office 365 across the organization. Safe/Unusual/Malicious warnings let users know how to treat the email. Our advanced dashboard provides complete visibility and tracking of the threats being blocked. INKY's email security software inserts user-friendly warnings into emails. This provides specific guidance to educate and protect your users. Safe/Unusual/Malicious warnings with details guide the user to take a closer look or proceed cautiously. Report an email with just a click is a favorite feature of our clients.

Organizations allocate significant resources to enhance their social media and digital presence, which has emerged as the primary means of engagement for countless individuals and businesses alike. As social media solidifies its role as the favored tool for interaction, it becomes essential for security teams to recognize and mitigate the vulnerabilities associated with these digital channels, which represent the largest unprotected IT network globally. Discover the capabilities of the ZeroFox Platform by checking out this brief two-minute overview video. Equipped with a worldwide data collection engine, AI-driven analytics, and automated response features, the ZeroFox Platform safeguards you against cyber, brand, and physical threats across social media and various digital platforms. Gain insight into your organization’s exposure to digital risks across numerous platforms where interactions occur and cyber threats may arise. Moreover, the ZeroFox mobile application offers the robust protection of the ZeroFox Platform right at your fingertips, ensuring accessibility and security wherever and whenever it is needed. Ultimately, understanding your digital landscape is crucial for effective risk management in today’s interconnected world.

Aspida Mail was designed to prioritize ease of use. We understand the necessity for you to maintain your regular business operations effortlessly. The installation process for Aspida Mail is straightforward and compatible with any device that supports IMAP. Furthermore, Aspida ensures that your communications are secure, as it is an encrypted email service compliant with HIPAA regulations. With this in mind, you can focus on your work while enjoying peace of mind regarding your email security.

The adoption of collaboration tools and meeting platforms from providers like Microsoft and CISCO is on the rise, leading to an urgent need for enhanced security measures. As organizations expand their communication channels and navigate increasingly intricate IT infrastructures, many of these platforms are now fully cloud-based, resulting in the emergence of new gateways and potential attack vectors. Although most businesses are diligently enhancing their email security protocols, they frequently neglect to safeguard against harmful files that can infiltrate their systems through platforms like SharePoint or messaging apps. Current security solutions are often inadequate and fail to provide comprehensive protection. To effectively address these challenges, the platforms offer a centralized cloud solution that enables companies—regardless of size—to swiftly adapt to the evolving threat landscape and bolster their defenses against emerging risks. This approach not only enhances security but also fosters a more resilient operational environment.