Tellstack

What mailfence.com is built with

Read on 2026-10-28 15:30. 6 technologies spotted.

TechnologyCategoryVersionConfidenceTell
HSTSSecurity100%headers strict-transport-security: max-age=31536000; includeSubDomains; prel
JavaProgramming languages100%cookies jsessionid: fidget~50F736C57E16F7F30BCC315A2485CE4D
Let's EncryptSSL/TLS certificate authorities100%certIssuer: Let's Encrypt, YR1
Open GraphMiscellaneous100%dom meta[property*='og:']: <meta property="og:title" content="Secure and private email | Mailfence encrypted email service">
PWAMiscellaneous100%dom link[rel='manifest']: <link rel="manifest" href="/c/mailfence/images/favicon/site.webmanifest">
hCaptchaSecurity100%headers content-security-policy: e.captcha.com https://hcaptcha.com https://*.hcaptcha.com blob: ; style-sr

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