Not stable enough for production. Every time I've tried to use them (3-5 times since they got started) they've lost emails and calendar events in inexplicable w

Not stable enough for production. Every time I've tried to use them (3-5 times since they got started) they've lost emails and calendar events in inexplicable ways, possibly by not taking a careful enough approach when dealing with unreliable connections or full storage. The suggested solution when reporting bugs has several times been to try the latest version with no justification other than "it might be fixed now, who knows" or reset completely and spend several hours reconfiguring and re-downloading everything. The least terrible solution I've found so far is GNOME Evolution, which I don't think has lost anything outright yet, although the UX is meh (no option for separate event start/end time zones, slow search even when all emails are cached locally, randomly requires re-signing in to Google, defaults time zone to Antarctica/McMurdo when travelling(?!?), does not seem to give any indication whether spam filtering is working or not, groups all accounts under my Google account in the Edit → Accounts view, and many more I can't remember off the top of my head). Sorry to be so negative, but so far every single email client (Evolution, K-9, Mutt, Outlook, Thunderbird) has been a chore, for different reasons. Gmail/Google Calendar is the only client(s) I rate, but I'm shutting down that account slowly for obvious reasons.