[davehtaylor]

The biggest problem, IMO, with the contacts system is how limited it is. You get two email addresses and two phone numbers per contact, that are pre-labeled "work" and "home", and that's it. It absolutely must have the ability to add arbitrary numbers of physical addresses, email addresses, and phone numbers to a contact, as well as give each field an arbitrary name. I cannot comprehend how it can't do this. Every other address book on the planet allows this. I have some contacts with 8 email addresses, 4-5 phone numbers, multiple physical addresses, all with custom names for what each of them are. So the fact that thunderbird can't handle this makes it unusable for me.

[PuffinBlue]

Only Apple and Google seem to allow this. I've made the same request to every other email/cal/contact provider I've used but they never do it.

Fastmail seemed interested for about 5 minutes but nothing came of it.

Trying to sync all this custom stuff across walled gardens (iOS and Android bi-directionl sync for instance) isn't the work of just a moment though. So i understand the reluctance.

Perhaps Thunderbird having its own built in flexible fields setup would be possible but you still really need to sync them to be fully useful.