Install cyrus-dev by entering the following commands in the terminal:
sudo apt update sudo apt install cyrus-dev
Description:
Cyrus mail system - developer files
This package contains header files and the static library needed to develop IMAP applications that interface with the Cyrus IMAPd suite. . For more information, please see the cyrus-common package.
Homepage: http://www.cyrusimap.org/
Version: 2.5.10-3ubuntu1
Section: universe/mail