Top 63 Email Security Software SaaS Companies in May 2026

Aberdeen, United Kingdom

Private email infrastructure with the ability to set private IPs, API, domains masking proxies and more

Venice, California, United States

MailRoute stops malicious cyber=threats with solutions for all industries. LinkedIn members receive 10% off for life at with promo code "LinkedIn"​: https://www.mailroute.net/pricing-sign-up/

Centennial, Colorado, United States

NeoCertified is a secure communications provider that offers the finest solutions in secure communications. We've been serving clients nationwide since 2002, in all 50 states. Our secure email solution helps organizations (and individuals) take the next step in meeting their legal requirements. + Our solutions are compliant with the following regulations: --FINRA --HIPAA --SEC --SOX --GLBA + A smooth, seamless process, securing your emails, messages, and photos has never been easier. + With an incomparable level of customer service, we're sure to answer any questions that you may have and guide you through the process of initiating your first secure email. + We offer a variety of solutions to choose from: --Secure Large File Transfer --NeoWebConnect (our secure contact form) --Secure Email Solution --NeoAPI (Secure API integration) + We currently work with thousands of companies -- from general business, financial, insurance, legal, medical, banks/credit unions and non-profit -- and individuals alike. Become a part of NeoCertified today and find out why secure email is a necessity in this digital age.

Bordeaux, France

Altospam is a company that provides antispam, antivirus, and anti-phishing software solutions. They offer email protection services to protect against cyberattacks and ensure the security of emails.

Dallas, Texas, United States

Developer of a communication platform created to offer secure communication. The company's platform provides automatic, transparent, secure end-to-end email by encrypting every facet of the communication, enabling people and businesses to maximize the safety and security of dark mail-compatible email accounts.

Launceston, Cornwall, United Kingdom

Email Hippo provides fast, accurate and secure email verification software, accessed via web app or API. Check a list of up to 500,000 emails, or use our API to screen emails in real time to prevent spam and service abuse. With our ASSESS product, anti-fraud teams can also detect fraud risks at the point of sign up - checking emails for common signs of compromise or malicious intent. Email Hippo has provided email verification since 2000 and became ISO27001 certified in 2017. #emailvalidation #emailverification #fraudprotection #emailsecurity #datasecurity #emailmarketing #databroker #softwaredevelopment #eCommerce #datacleansing

Los Angeles, California, United States

Owner and operator of cyber security company intended to protect users from getting hacked online. The company's services protect social media, email and file hosting accounts from getting hacked 24/7, enabling users to get protection for their social media and email accounts.

Singapore, Singapore, Singapore

SendForensics is a global provider of advanced email analysis, quality-assurance and anti-phishing solutions for marketing, compliance and security applications. Trusted by responsible senders worldwide.

Essex, Vermont, United States

Preava Prevent in an cloud email plugin that stops emails and attachments from being sent to the wrong people. Through minimizing unintended emails, your organization safeguards proprietary and sensitive information including privileged client data and PII/PHI. Preava is funded and advised by VeraSafe — one of the largest boutique privacy-compliance consultancies in the U.S. For over a decade VeraSafe has been re-imagining privacy and data protection compliance services. VeraSafe's team of attorneys, privacy professionals, and IT security experts provide Preava with world class guidance.

Dublin, Dublin, Ireland

We rapidly reduce cyber security risks for companies of all sizes by helping them to create a human firewall through Active Human Error and Phishing Mitigation. 95% of security issues are caused by human error. 23% of staff are opening phishing emails with 11% opening email attachments or clicking on links, leading to Ransomware infections, Data Breaches and Financial fraud. This is costing businesses a lot of money in downtime, incident response and knee jerk purchases that are not addressing the root cause. Founded in 2016, by a team of information security professionals with over 80 years of combined experience, we know the answer is not just about buying the latest security defense. The answer lies in addressing the root cause of all incidents. Human error. We excel at educating your staff, your last line of defense, who then become your greatest security asset in preventing future incidents. Our Phishing Mitigation training takes just under 10 mins to set up and is delivered straight to your staff. No security people are needed. No hardware. Just one administrator to access our website, add your staff email addresses, choose a mock phishing email template and send to your staff to start raising awareness with instant user feedback. Apart from our scheduled training, we can deliver training or company policy reminders to staff directly in response to "real-time"​ detected risky user behaviour by your existing security defenses.