courier-imap software package provides Courier mail server - IMAP server, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install courier-imap
courier-imap is installed in your system.
Make ensure the courier-imap package were installed using the commands given below,
$ sudo dpkg-query -l | grep courier-imap *
You will get with courier-imap package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | |
| Package | courier-imap |
| Version | 4.17.1+0.76.1-3 |
| Description | Courier mail server - IMAP server |
| Sub Section |