Top 16 Secure Email Gateway 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.

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.

United States

The e-Courier secure cloud based service is designed for professional organizations, small or large, to seamlessly exchange sensitive and confidential information externally with their clients and stakeholders. e-Courier provides secure email and file transfer without a backdoor, which includes innovative Courier like features that increase your productivity that are not available in traditional email and file sharing services. By linking e-Courier to your organization’s website it can be implemented as a powerful client file and message portal. It is so simple to use that it does not require any technical expertise, the only requirement for it to be deployed is a web browser. The e-Courier smart inbox and track tables display important, time-sensitive information, alerts, and the inbound delivery status of emails. Stop wasting time hunting through the inbox by using our pervasive Smart Search and Quick View features. Increase productivity by utilizing our email delivery status dashboard Track the delivery status of sent and received emails. Quickly check if the status of the email is unopened, opened, completed, returned or resent Quickly check if all or some of the file attachments were downloaded Use the e-Courier smart search to quickly find packages Detailed email delivery status audit log View the status and actions taken on email file attachments and messages with complete, up-to-the-minute audit trails. See when the email was sent. See each time the email was opened. See each time a file attachment was downloaded. See if the recipient(s) dismissed your email. See if the email has been returned. See if the email has been resent. See if the email has been deleted. Detailed email delivery status audit log

Henderson, Nevada, United States

SpamHero was developed by two brothers, Curtis and Jeremy O’Reilly. After 13 years in the web hosting industry they’ve witnessed first hand the frustrations that business owners have over the cost of fighting spam, and the lackluster performance of existing solutions. What makes SpamHero different is that it is powered by a team of human spam-fighting technicians who are updating the filter rules several times a day. Over 5 million rules have been compiled so far. Unlike “robotic” algorithms that can sometimes mistake real email for spam, each rule is carefully crafted in such a way that real email does not get blocked. Because SpamHero is a hosted solution, it requires no new hardware or software installed at a client's location. The client changes what is known as their domain’s MX record so that email flows through SpamHero’s filtering servers before it reaches the domain’s real mail server. The filtering service all includes a powerful email quarantine that allows users to view the spam that is caught by the filter. Pricing for the service starts at $4.95 per month for domain-wide filtering.