The Email Administration Utility can help a client administrate their own Email accounts via a web interface using PHP and Perl scripting. The client can add, remove or modify accounts on a server that provides an IMAP port to connect to.
License
BSD LicenseFollow Email Administration Utility
Other Useful Business Software
Paessler: Easy to Use With Enterprise Power. Free Trial
You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.