- Allegro Maild - Allegro Maild is an SMTP email server written in Common Lisp
- cl-icalendar - An implementation of the iCalendar (RFC 5545) file format
- cl-pop - CL-POP is a lisp networking library that provides a POP email client based on RFC 1939
- CL-Sendmail - CL-Sendmail is a library for sending email using the external program 'sendmail'
- CL-SES4 - AWS SES email sender using Signature Version 4 of Amazon's API
- CL-SMTP - CL-SMTP is an SMTP (RFC 5321) client
- clonsigna - Clonsigna is a Common Lisp library that allows interaction with IMAP4rev1 servers
- CLPMR - CLPMR is the Common Lisp ProcMail Replacement
- cocoa-mail - cocoa-mail is a basic interface for OpenMCL on Mac OS X to the Cocoa Mail infrastructure
- de.setf.utility - de setf utility is a collection of Common Lisp utilities functions and several purpose-specific libraries
- Demyltify - Demyltify is a library that lets you write Sendmail email filters (milters) in Common Lisp
- esmtp-client - esmtp-client is a library for sending email via SMTP according to RFC 6409
- imap - imap is a client library for Allegro CL for sending and receiving email with support for POP, IMAP and SMTP
- jarw-inet - jarw-inet supports several Internet networking Standards including writing servers and clients, http, smtp, nntp protocols, header parsing, mime decoding
- macho - Macho is an email web archiving system, similar in scope to pipermail or mhonarc
- MARCH - MArch is a daemon program that saves email going through a mail server into a database
- mel-base - mel-base is a library for handling email with support for Maildir, POP3, IMAP and SMTP folders
- org-davep-newsrc - org-davep-newsrc is a Common Lisp library that provides a couple of classes for reading a Unix Usenet newsrc file
- org-davep-nntp - org-davep-nntp is a Common Lisp library for talking to an NNTP (RFC 3977) server
- rfc2822 - Text email as defined in RFC 2822
- smta - smta is a simple SMTP email server
- smtp4cl - SMTP4CL is a SMTP client library to send messages to an MTA (Mail Transport Agent)
- trivial-email-utf-8 - trivial-email-utf-8 is like CL-SMTP's send-mail, but qprints any Unicode characters in the message title or content and includes the appropriate headers if necessary
email
Libraries and applications for sending/retrieving/dealing with email.