Mail App Opens Randomly Mojave 10.14.5

As per this article https://support.apple.com/en-bh/guide/mail/mlhl3bd39dac/mac

Note: When Mail is full screen, messages open in Split View by default. If you want messages to slide up from the bottom of the screen instead, choose Mail > Preferences, click General, then deselect “Prefer opening messages in split view when in full screen.”

I spoke to someone at apple who said they've heard of this (the mail app opening randomly in split view) but aren't sure yet what's causing it. They suggested that, as soon as it happens, write down the exact minute it occurred. Then, open the terminal app, and type "sudo sysdiagnose" (without the quotation marks) -- supposedly that provides a log of everything happening on your computer and the exact minute that it's happening at. (That way Apple can see what processes are going on at the exact moment the mail app spontaneously opened). This log can be saved as a file, which either you could send directly to apple, or you could screen share with an apple support person on the phone. Not sure that actually gets any of us closer to an answer, but at least it's more than I had to go on before. Funny enough, the mail app issue hasn't happened for me yet this week (just last week), so I haven't had a chance to test this out yet. If anyone has any luck with this, let us know!

Its just "SILLY" that this issue is still occurring. Like many fo you I alway report this as a bug and the workaround of adding "Other Apps" solves it but its not as clean of a solution as the account just working.

Hopefully soon!.

May just switch to Airmail.

I've been having this same issue as well... It seems to pop open when I get new junk mail in one of my gmail accounts.

@Kuhki

This has really become a pain, the mail main window keeps popping up in the middle of my working, and seems like it is getting worse... I wonder if you might give a little more detail to these particulars that you did...?

.....

-Use gmails application password instead of the normal password to configure mail.

-Set notifications of google calendar as shown in web (did not work for me)

Thank you for your time, and for giving more detail...... I will spend more time on this, with hopes what you've shared will make the difference... Nothing else so far has... Such a pain...

Thank you again...

Google intruding their presence more and more into email client software, including Apple Mail.... I've tried the best I could understand some of the suggestions here, along with some other stuff, but have had no success in affecting this... I sure wish someone at Apple would take this on and provide a way for individuals to control how google interacts with Apple Mail...

For a while now (1-2 months), my apple mail app on my iMac will open randomly into split view, without my clicking on the mail app. Happens I would say either every day or every other day. Mail app preference for opening into split view is unchecked. Google calendar notification settings are all turned to off. Can't figure out what's wrong. Just called apple support...and they say they've never heard of this before. Apple Support said that they can't help because I can't replicate the problem on command (i.e., it happens randomly, and by the time it's happened, it's too late to call apple support). So I guess I'm on my own on this. Any ideas?

Not sure if I'm the only Software Developer in here, but I think it's pretty safe to say we've found the issue (reproducible as well). I've seen this app elsewhere in these forums for debugging, not so useful here @tygb. Apple needs to patch this in the next release of Mail.

And none of the possible solutions offered here work for me... I design and develop websites, either it's quit Mail, and forego email notices until I remember to start it up again, or have Mail windows constantly popping up and having to close them from in the middle of everything... Sooooo bloody annoying...

No. That is not what we are all reporting. Please read the thread before responding with copy and pasted info. We are reporting that Mail RANDOMLY and SPONTANEOUSLY opens itself into split screen view when Mail starts off in full screen mode, and is then closed (but still running) by clicking the red X. To be clear: it will happen when mail is still running, as indicated by a dot under the Mail charm, but no Mail screen is open.

That didn't work for me. Turned (at least I think so) all possible calendar notifications off and it still pops up. I don't even have the calendar added in my account on Mac. Of course it's a matter of Gmail accounts, no idea why. Someone said that it must be connected with AppleScript but I don't find it helpful at all. I've filed a bug report to Apple but considering what you guys wrote here I don't hope they'll even look into it anymore. Is there some kind of a genius who is able to find for example in the Console what particular thing makes Mail pop up? Desperately running out of ideas...

Agree. On the Microsoft boards, actual members from their product teams will respond to discussion board messages. It's frustrating that Apple has no real mechanism for reporting widespread, fairly serious glitches like this.

Tried what is suggested at the Reddit link a while back, , the settings are a bit different for google calendar now but all notifications are presently turned off or "none," and it is no help at all for this issue... And I do not even use google calendar, disconnected and deleted what automatically gets set up even further back ...

The Reddit info worked for me. You are correct that the settings are laid out differently now; the post is about 2 years old so that makes sense. However, I was able to use the strategy and follow the recommendations even though there have been UI changes. Sorry it's not working for you.