Internet Messaging Program
| Internet Messaging Program (IMP) | |
|---|---|
 | |
| Developer | The Horde Core Team |
| Release | 1998 |
| Stable release | 6.2.27 
/ 27 August 2020 |
| Written in | PHP |
| Operating system | Cross-platform |
| Available in | English, German and many others (multilingual) |
| Type | Webmail |
| License | GPL-2.0-only |
| Website | www |
The Internet Messaging Program or IMP is a webmail client. It can be used to access e-mail stored on an IMAP server. IMP is written in PHP and a component of the collaborative software suite Horde.
It is included with cPanel and Plesk installations as a webmail client. It often integrates email, calendar, address book, notes, tasks, filters and a newsreader with cPanel.
Internet Messaging Program is free and open-source software subject to the terms of the GPL-2.0-only license.