Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail.
This version of Hastymail is no longer being developed. We are now working on a new version, Hastymail 3, AKA, "Cypht".
http://cypht.org
Quinsonnas Mail, a PHP4+/PEAR Web email client, retrieves mail from POP, IMAP, and NNTP server inboxes into a MySQL database. Mail is sent via SMTP, Sendmail, or PHP. MIME emails are supported as well. Contacts and lists are stored for composing email.
sieve-php is a php class that implements MANAGESIEVE, a means to easily interact with a SIEVE Mail Filtering Server such as Cyrus' timsieved, is a server side mail filter system integrated into Cyrus IMAP.
Jwapmail is opensource wap (wml) based email client (wapmail) written in PHP using IMAP protocols to communicate with the mailbox server.
Jwapmail is compliance to RFC2060 and RFC822. Jwapmail doesn't use php-imap library.
Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.
Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.