Tiki and Cypht webmail interoperability started with Tiki20
. Major work has been done since that time in Cypht, and in Tiki 21, 22, 23 24. Work is ongoing, so it's recommended to run the latest 24.x from Git or Daily Build
. Most enhancements and many fixes will not be backported to Tiki21
LTS as there are lots of changes.