A cross-platform .NET library for IMAP, POP3, and SMTP.

• UpdatedMar 10, 2025
• C#

A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.

• UpdatedMar 12, 2025
• C#

Simple API, Complex Emails (Jakarta Mail smtp wrapper)

• UpdatedMar 17, 2025
• Java

An S/MIME signing utility for use with Git

• UpdatedDec 12, 2024
• Go

[DEPRECATED — See notice in README.md and switch to OpenSSL 3 OQS Provider] Fork of OpenSSL 1.1.1 that includes prototype quantum-resistant algorithms and ciphersuites based on liboqs

• UpdatedJan 8, 2025
• C

en-crypt, de-crypt, si-gn, ve-rify - smime, pdf, xades and plain files in pure python

• UpdatedMar 15, 2025
• Python

A C/C++ MIME creation and parser library with support for S/MIME, PGP, and Unix mbox spools.

• UpdatedFeb 24, 2025
• C

.NET email library and proxy supporting IMAP, POP3, and SMTP with S/MIME and PGP.

• UpdatedMay 30, 2023
• C#

ACME Email Client for EmailReply-00 Challenge

• UpdatedNov 18, 2024
• Python

AS2 Library for building and parsing Messages and MDNs

• UpdatedAug 23, 2024
• Python

🔐 📧 Encrypts WordPress emails using OpenPGP or S/MIME with a familiar API.

• UpdatedApr 28, 2024
• PHP

A S/MIME library for JavaMail

• UpdatedJan 5, 2022
• Java

API specification for gematik's KIM - a secure Email standard, which enables the exchange of information and payload in the German healthcare sector.

• UpdatedMar 3, 2025

S/MIME encoder in pure python

• UpdatedNov 26, 2023
• Python

Aegis Implicit Mail

• UpdatedJan 27, 2023
• C#

a purly Peer-to-Peer instant messenger client

• UpdatedOct 12, 2021
• C

PKI Consortium Community Discussions

• UpdatedMar 10, 2021

Sign Nodemailer mail using S/MIME

• UpdatedOct 15, 2020
• JavaScript

Openssl Nif wrapper for Elixir

• UpdatedApr 27, 2021
• Elixir

View and compose SMIME encrypted messages in Outlook Web App on Linux

• UpdatedJan 23, 2025
• Python