Install sieve-connect by entering the following commands in the terminal:
sudo apt update sudo apt install sieve-connect
Description:
MANAGESIEVE protocol client
This is sieve-connect. A client for the MANAGESIEVE protocol, as implemented by timsieved in Cyrus IMAP. . sieve-connect is designed to be both a tool which can be invoked from scripts and also a decent interactive client. It should also be a drop-in replacement for "sieveshell", as supplied with Cyrus IMAP.
Version: 0.88-1
Section: universe/net