Best Email Security Software for Chromebook of 2025

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.

Protect your entire business with a single-click solution that offers all-in-one protection. A unified solution for threat protection that provides a holistic, cutting-edge defense without draining your IT resources. Our AI anticipates risks, then proactively identifies issues and automatically addresses them, saving you time.

BUFFERZONE is a patent-pending containment and disarming system that protects endpoints from advanced malware and zero day attacks, while maximising user and IT productivity. BUFFERZONE protects individuals and organisations from advanced threats that evade detection by identifying potentially malicious content in browsers, email, and removable media. BUFFERZONE disarms the content and securely transfers it from the container to its native endpoint and secure network zones. It also provides critical intelligence that can be used for enterprise-wide security analysis. BUFFERZONE, a lightweight solution, is easy to deploy and configure. It provides cost-effective containment up to thousands of endpoints.

We want you to simply focus only on what you do! EmailAuth.io is part of the Infosec Ventures group and our core value lies in taking care of your most valuable digital asset: Email. We thrive to increase your Email Deliverability and help you get the maximum ROI from your mailing campaigns and increase trust amongst your customers, partners and vendors! We don't just provide support, we manage! EmailAuth's methodology includes owning the journey of attaining ultimate security of your domains. Our team of Security Experts and dedicated Customer Success Managers make sure to work with you effortlessly.

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.

SpamTitan Plus Anti Phishing is an AI-driven email security solution that provides "zero day" threat protection and intelligence. Spam Titan Plus covers 100% of all current anti-phishing feeds. It has 1.5X more unique URL detections than current market leaders and 1.6X faster detections of phishing. SpamTitan Plus provides SpamTitan Plus continuous updates that provide SpamTitan Plus 10 million new, never-before-seen malicious URLs per day. Book a SpamTitan Plus demo Today.

ToDMARC is a SaaS-based email authentication platform designed for B2B businesses. It helps protect domain names, brands and email communication against threats such as spoofing and ransomware. It integrates a robust set of hosted email security protocol, including DMARC and SPF, DKIM and BIMI. This combination allows businesses to increase their email visibility and protect themselves against cyber threats. ToDMARC, despite its early stage, is committed to security, compliance, and aspiring to achieve industry standards such as SOC2 type 2, ISO 27001 and GDPR compliance. Positioning itself as a trusted B2B partner, ToDMARC aims to achieve certifications like SOC2 Type 2 and ISO 27001.