php-horde-imp 6.2.12-1ubuntu1 (amd64 binary) in ubuntu xenial

 IMP, the Internet Mail Program, is one of the most popular and widely deployed
 open source webmail applications in the world. It allows universal, web-based
 access to IMAP and POP3 mail servers and provides Ajax, mobile and traditional
 interfaces with a rich range of features normally found only in desktop email
 clients.
 .
 This package is part of Horde, a web application Framework written in PHP with
 modules like IMP (webmail), Turba (contacts), Kronolith (calendar), Nag (task
 list), Gollem (file manager), etc.