Simple, modern & fast web-based email client

Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)

AfterLogic WebMail Lite PHP. Fast and easy-to-use webmail front-end for your existing IMAP mail server, Plesk or cPanel.

Web based groupware server written in PHP, forum at https://help.egroupware.org/

IMAP ➝ SQL syncing engine, JavaScript-free email client, and a Kanban-style email client

🌰️🐿️ SquirrelMail GitHub Repository (PHP 7-OK!)

Roundcube plugin to populate and maintain user identities automatically on each login, based on corresponding data from the plugin's config file. Especially useful for shared mailboxes (like info@example.com) with shared IMAP namespaces.

NOCC is a simple and fast Webmail client

Complete mailing solution with dkim signatures, webmail and antispam. Tested on Debian Buster.

Dolibarr Roudcube integration - Deprecated module

i-MSCP Roundcube package (addon)

A backend service for IMAP/SMTP email messaging.

OSS webmail / PIM solution

Quick and Dirty Mail Admin

phpmaildirclass allows you to view your e-mails in browser from a maildir source, not pop3/imap.

Webmail application developed with Symfony.

i-MSCP RainLoop package (addon)

RoundcubeHacks

Cypht: Lightweight Open Source webmail written in PHP and JavaScript

Php ile OAuth2 kullanarak PHP ile Microsoft 365/Office 365 SMTP yapılandırması, Example code for configuring Microsoft 365/Office 365 SMTP and email operations using PHP with OAuth2.