> [...] People want their phone to > remind them of their appointments [...] It's a generalization. Not valid for all people. Maybe SOME people want their phone to remind them of their appointsments. My appointments are synchronized from owncloud to Thunderbird and to many (LineageOS-based) smartphones and tablets and >>I<< do NOT want to be reminded on the smartphones and tablets, but ONLY on Thunderbird desktop client. Regards, Meikel