Gene's SMTP server — receive Internet mail with less fuss

The Email Address Validation Library

Perl 5 bindings to libeav - Email Address Validation Library

RFC 5321/5322/6531 email address parser, validator, and normalizer for Rust. Subaddress extraction, provider-aware normalization, PSL domain validation, anti-homoglyph protection.

Simple SMTP incoming server written in NodeJS.

Validate syntax for a RFC 5321/6531(SMTPUTF8) email mailbox address.

Simple Mail Transfer Protocol (SMTP) is the foundational internet standard for transmitting electronic mail across networks. Defined in RFC 5321 (October 2008), SMTP uses a command-response model over TCP port 25 (or 587 for submission, 465 for SMTPS).

Simple SMTP Server

Swift implementation of RFC 5321: Simple Mail Transfer Protocol.

A PHP library for comprehensive email address verification that goes beyond basic syntax validation by performing DNS lookups and SMTP server connections to verify email deliverability.