# Intermedia Email Encryption vs SEPPmail Secure Email Gateway: side-by-side comparison (2026) [Intermedia Email Encryption](https://cybersectools.com/tools/intermedia-email-encryption) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [Intermedia](https://cybersectools.com/companies/intermedia). [SEPPmail Secure Email Gateway](https://cybersectools.com/tools/seppmail-secure-email-gateway) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [SEPPmail AG](https://cybersectools.com/companies/seppmail-ag). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Intermedia Email Encryption | SEPPmail Secure Email Gateway | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Encryption | Email Encryption | | Verified | No | No | | Deployment type | Cloud | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Intermedia | SEPPmail AG | | Headquarters | – | – | ### Use cases and capabilities | | Intermedia Email Encryption | SEPPmail Secure Email Gateway | |---|---|---| | Encryption | Yes | Yes | | Microsoft 365 | Yes | – | | Gateway | – | Yes | | SMTP | – | Yes | | GDPR | – | Yes | | DKIM | – | Yes | | SPF | – | Yes | | DMARC | – | Yes | | TLS | – | Yes | | PII | – | Yes | | Security Compliance Training | – | Yes | ### Core features **Intermedia Email Encryption** 10 features listed. Sign in on the page to see them. **SEPPmail Secure Email Gateway** 6 features listed. Sign in on the page to see them. ### Integrations **Intermedia Email Encryption** 2 integrations listed. Sign in on the page to see them. **SEPPmail Secure Email Gateway** 12 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Intermedia Email Encryption](https://cybersectools.com/tools/intermedia-email-encryption) fits if you want a cloud product. - [SEPPmail Secure Email Gateway](https://cybersectools.com/tools/seppmail-secure-email-gateway) fits if you need to run it on your own servers. ## Intermedia Email Encryption vs SEPPmail Secure Email Gateway FAQ Common questions when comparing Intermedia Email Encryption vs SEPPmail Secure Email Gateway for email encryption. ### What is the difference between Intermedia Email Encryption and SEPPmail Secure Email Gateway? **Intermedia Email Encryption**: Cloud-based email encryption service using PKI, S/MIME & X.509 for orgs. Built by Intermedia. **SEPPmail Secure Email Gateway**: Built by SEPPmail AG. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Intermedia Email Encryption and SEPPmail Secure Email Gateway? **Intermedia Email Encryption** is made by Intermedia. **SEPPmail Secure Email Gateway** is made by SEPPmail AG. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Intermedia Email Encryption a good alternative to SEPPmail Secure Email Gateway? Often, yes. Intermedia Email Encryption and SEPPmail Secure Email Gateway are both Email Encryption products, and both cover Encryption. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Intermedia Email Encryption vs Z1 SecureMail Gateway](https://cybersectools.com/compare/intermedia-email-encryption-vs-zertificon-z1-solutions) - [Intermedia Email Encryption vs LuxSci](https://cybersectools.com/compare/intermedia-email-encryption-vs-luxsci) - [Intermedia Email Encryption vs Egress Protect](https://cybersectools.com/compare/egress-protect-vs-intermedia-email-encryption) - [SEPPmail Secure Email Gateway vs Z1 SecureMail Gateway](https://cybersectools.com/compare/seppmail-secure-email-gateway-vs-zertificon-z1-solutions) - [SEPPmail Secure Email Gateway vs LuxSci](https://cybersectools.com/compare/luxsci-vs-seppmail-secure-email-gateway) - [SEPPmail Secure Email Gateway vs Egress Protect](https://cybersectools.com/compare/egress-protect-vs-seppmail-secure-email-gateway) ## Alternatives to each - [See all Intermedia Email Encryption alternatives](https://cybersectools.com/alternatives/intermedia-email-encryption) - [See all SEPPmail Secure Email Gateway alternatives](https://cybersectools.com/alternatives/seppmail-secure-email-gateway) --- Source: https://cybersectools.com/compare/intermedia-email-encryption-vs-seppmail-secure-email-gateway For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/intermedia-email-encryption.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Intermedia Email Encryption and SEPPmail Secure Email Gateway: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md