Open Source Credits
Last updated 26 September 2026Effective 26 September 2026
Software
Viremail is our own code, built on these open-source projects. We are grateful to their authors.
| Component | Licence | Copyright holder |
|---|---|---|
| React, React DOM | MIT | Meta Platforms, Inc. and contributors |
| React Router | MIT | Remix Software |
| Vite | MIT | Evan You and contributors |
| Lucide icons | ISC | Lucide contributors |
| Express, express-session, multer | MIT | TJ Holowaychuk and the Express contributors |
| Helmet | MIT | Adam Baldwin, Evan Hahn and contributors |
| ImapFlow, Nodemailer, Mailparser, PostalMime, libqp, libbase64 | MIT / MIT-0 | Andris Reinman, Postal Systems OÜ |
| OpenPGP.js | LGPL-3.0-or-later | Proton AG and contributors |
| SimpleWebAuthn | MIT | Matthew Miller |
| ical.js | MPL-2.0 | Philipp Kewisch and contributors |
| web-push | MPL-2.0 | Marco Castelluccio and contributors |
| DOMPurify | MPL-2.0 or Apache-2.0 | Cure53 and contributors |
| sanitize-html | MIT | Apostrophe Technologies, Inc. |
| ws | MIT | Einar Otto Stangvik and contributors |
| undici | MIT | Node.js contributors |
| qrcode | MIT | Ryan Day |
| iconv-lite | MIT | Alexander Shtuchkin |
| dotenv | BSD-2-Clause | dotenv contributors |
OpenPGP.js is used unmodified under the GNU Lesser General Public License. You can get its source code, and replace it with your own build, from the project's repository linked above. Programs under the Mozilla Public License are also used unmodified, and their source is available from the links above.
Fonts, images and avatars
| Component | Licence | Copyright holder |
|---|---|---|
| Inter typeface | SIL Open Font License 1.1 | Rasmus Andersson |
| Default avatars (Notionists, Lorelei, Thumbs styles) | CC0 1.0 (public domain); DiceBear library MIT | DiceBear and the style authors |
| Sign-in background photos | Unsplash License | Photographers on Unsplash (selected through Lorem Picsum) |
Names and trademarks
Viremail, its V symbol and its interface are original work by Svayam Incarnation Limited. Other product names mentioned in our help pages are the property of their owners and are used only to describe compatibility.