I donāt have experience with Mailfence or Mudita Center, but perhaps this will help:
When my household hadā¦
- DAVx5 and Etar (in place of MuditaOS Kās Calendar) on a Kompakt (sold, but planning to buy again @ v1.6.0),
- DAVx5 on a Google Android cellphone,
- Thunderbird on a Windows 11 PC, and
- Thunderbird on an Ubuntu PC,
..we were able to edit our householdās TheGood.Cloud-hosted contacts on any ofā¦
- Etar on the Kompakt,
- Calendar on the Google Android cellphone,
- Thunderbird on the Windows 11 PC, or
- Thunderbird on the Ubuntu PC,
ā¦and we were able to edit our householdās TheGood.Cloud-hosted calendar on any ofā¦
- Contacts on the Kompakt,
- Contacts on the Google Android cellphone,
- Thunderbird on the Windows 11 PC, or
- Thunderbird on the Ubuntu PC.
ā¦and have those calendar and contacts edits appear on all four devices in our household (Kompakt + Google Android cellphone + Windows 11 PC + Ubuntu PC) because any such edit got synchronized back to our TheGood.Cloud account (which then got synchronized to all four devices).