Ars Magica PBP / PBEM - Best Practices Requested

Epic threadomancy! I've tried searching for play-by-post advice, and this seemed the best thread even though it's 11 years old. (Maybe my search fu is failing me?)

Anway, how to make different forms of Ars work is a topic dear to my heart. Solo Ars, convention games, online games, PBP games - I want to experience Ars Magica in all the ways it can be found and encourage the game in general. However, lately I've been trying to get into PBP and it's been tough going. I'll be the first to admit I'm guilty of brief-posting and posting late as much as the next guy, but was wondering if people have any more good advice on how to keep games going and keep the flow up despite all the problems that can occur.

What's your experience of PBP? Does anyone PBEM anymore? Are there any remote play options we're overlooking?