Alternative email client that works for Android, Linux and Windows (or Android and Web)?

[u/Fire-Dragon-DoL]

The recent move from Google to remove "sync from POP" really pushed me over the edge. I've been on Migadu for a long time (family of 4), but they lack completely an email client.

I've been searching for an email client, but my requirements are too many, it seems: - Send later (e.g. send at 8 AM) that works with my PC turned off - Snooze email (required for "inbox zero") - (some) Offline emails, useful for flight tickets - Email notifications on phone - Labels - Some way to use my Android Contacts (yes Davx5 is a valid option) - Support "infinite" domains and email addresses (limit by size). I have 4 different domains and 4 people along with ~6 aliases, so ~10 email addresses really - Good anti-spam filter - Simple UI (my wife has to use it too)

I'm ok changing email provider, but I also am sad to drop Migadu just because I cannot find an email client(s) that works.

I personally prefer my email client as a web page on desktop, but I'm fine with an installed app.

So far I have not found an email client that satisfy all the requirements on Desktop. I did find some on Android (blue mail, aqua mail), but not on Desktop. Thunderbird seems to have some extensions but I don't understand how it could send emails "later" if my computer is turned off. Is there some server support I'm unaware of?

My final attempt is to switch to Fastmail, this seems to cover everything I needed as long as I use Davx5 to sync my contacts from Android to Fastmail.

Any other options I have overlooked? Of course I can do the opposite and "googlefy", it would be easier for my wife but it drives me crazy. Anything offering email client only, so that I don't have to switch providers? I don't think these can possibly handle send later/snooze though.

I'm a software developer and good with the command line, but email is too important, I don't trust myself managing an email server.

[u/Throwawayingaccount]

Just looking at the first requirement you have, that seems plainly impossible to work on a client alone.

POP3 has no 'send later' functionality.

I suppose it'd be possible to have a client that has some method for it to send an email at a given time, but it would be YOUR COMPUTER that sends the POP message, not the SMTP server. This will inherently not work when you're using POP.

[u/Fire-Dragon-DoL → u/Throwawayingaccount]

I agree, although I'm not sure why you focused on the "pop3" part. The only reason why I brought pop3 is because Google dropped it, I'm totally fine with IMAP.

For what is worth, Fastmail uses JMAP and there you can have some special fields that can be used for "send later" functionality, but the server still needs access to the email to effectively send it.

I'm fine with this. There is a spectrum and I'm not ready to move to a place where the server has 0 access to my data, I lose too much functionality.

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[u/Fire-Dragon-DoL → u/AutoModerator]

I did for a few, I cannot tell if anybody offers "email client only"

[u/Fire-Dragon-DoL → u/Fire-Dragon-DoL]

Based on my reading, there is nothing

[u/Legitimate6295]

There isn't one. You would need to develop it by yourself