# OpenText Core Email Encryption vs SEPPmail Secure Email Gateway: side-by-side comparison (2026) [OpenText Core Email Encryption](https://cybersectools.com/tools/opentext-core-email-encryption) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [OpenText Cybersecurity](https://cybersectools.com/companies/opentext-cybersecurity). [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 | | OpenText Core 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 | OpenText Cybersecurity | SEPPmail AG | | Headquarters | – | – | ### Use cases and capabilities | | OpenText Core Email Encryption | SEPPmail Secure Email Gateway | |---|---|---| | TLS | Yes | Yes | | Encryption | – | Yes | | Gateway | – | Yes | | SMTP | – | Yes | | GDPR | – | Yes | | DKIM | – | Yes | | SPF | – | Yes | | DMARC | – | Yes | | PII | – | Yes | | Security Compliance Training | – | Yes | ### Core features **OpenText Core 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 **OpenText Core Email Encryption** No integrations listed. **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. - [OpenText Core Email Encryption](https://cybersectools.com/tools/opentext-core-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. ## OpenText Core Email Encryption vs SEPPmail Secure Email Gateway FAQ Common questions when comparing OpenText Core Email Encryption vs SEPPmail Secure Email Gateway for email encryption. ### What is the difference between OpenText Core Email Encryption and SEPPmail Secure Email Gateway? **OpenText Core Email Encryption**: Cloud-based email encryption with automated DLP policies and delivery methods. Built by OpenText Cybersecurity. **SEPPmail Secure Email Gateway**: Built by SEPPmail AG. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes OpenText Core Email Encryption and SEPPmail Secure Email Gateway? **OpenText Core Email Encryption** is made by OpenText Cybersecurity. **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 OpenText Core Email Encryption a good alternative to SEPPmail Secure Email Gateway? Often, yes. OpenText Core Email Encryption and SEPPmail Secure Email Gateway are both Email Encryption products, and both cover TLS. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [OpenText Core Email Encryption vs Z1 SecureMail Gateway](https://cybersectools.com/compare/opentext-core-email-encryption-vs-zertificon-z1-solutions) - [OpenText Core Email Encryption vs LuxSci](https://cybersectools.com/compare/luxsci-vs-opentext-core-email-encryption) - [OpenText Core Email Encryption vs RPost RMail Email Encryption](https://cybersectools.com/compare/opentext-core-email-encryption-vs-rpost-rmail-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 RPost RMail Email Encryption](https://cybersectools.com/compare/rpost-rmail-email-encryption-vs-seppmail-secure-email-gateway) ## Alternatives to each - [See all OpenText Core Email Encryption alternatives](https://cybersectools.com/alternatives/opentext-core-email-encryption) - [See all SEPPmail Secure Email Gateway alternatives](https://cybersectools.com/alternatives/seppmail-secure-email-gateway) --- Source: https://cybersectools.com/compare/opentext-core-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/opentext-core-email-encryption.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on OpenText Core 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