Do any other clients crash like this when you add the same accounts to them? I'm thinking you have some saved/cached profile data in there causing issues. There is a process for flushing that out I found outlined here for reference:

That will flush out ALL account data from Mac Mail I believe, just a heads up!

Other mail apps seem to work fine, just Apple Mail.

There isn't a cache folder I can see to clear, I'm on the latest OS and I can't find a ~Library/Mail folder to clear.

It seems strange that it's only the accounts that use the SM server that have an issue and I've tried adding different ones on the server to Mail. As soon as I add any account on the SM server Apple Mail crashes.

Thanks

Anthony

Thats extremely odd and we have never had an incompatibility with Mac Mail.  It's VERY popular to use Mac Mail with SmarterMail and I use it as my primary client.  What MacOS version are you using?

Mac OS = 13.1 (Ventura)

I have 8 email accounts running on Mailspring client that are served from my SM server along with another 3 non SM email accounts.

I can run any non SM account in Apple Mail, as soon as I add any one of those 8 email account it crashes as soon as it opens.

This has worked fine with SM for years, It's really weird but that's whats happening.

I can't find any Apple Mail cache files otherwise I would try clearing these. I've deleted the email accounts completely and tried adding them again with the same result.

I would contact support and we can help you out.  Very odd indeed.

By the way it isn't just on my machine, my wife has the same issue on her mac (older OS version).

Nobody else on the server has mentioned they have an issue as yet, but that doesn't mean they don't.

YS Tech,

We have a substantial Apple iOS & MacOS user-base that is using SmarterMail (about 90% of our user-base is Apple products). We've seen a lot of strange & weird Apple issues over the years and it always comes down to corrupted settings in the Apple Mail app (we tend to get a lot more of them after every OS update as the Mail app settings routinely get changed during updates).

Corruption in email clients happens all the time, and no email client is immune, including Apple Mail. If you are using IMAP then the easiest resolution is to remove the account from the Mail app, close the Mail app completely, and relaunch it, after which you can re-add your IMAP account. When setting up your SmarterMail account in Apple Mail it is strongly recommended to set the Authentication Method to "Password" or "Plaintext" instead of using the default "MD5-CRAM". (This is an ongoing problem with Apple going on 20 years now if your password contains a symbol and every time that Apple fixes it they break it again a couple of months later in another update.)

More recent versions of Mac Mail have a built-in feature to fix common types of local mailbox corruption. If you select your SmarterMail mailbox and then choose ‘Mailbox’ from the main menu, you would then select 'Rebuild' from the drop-down menu. This will begin the process of rebuilding your mailbox. When you rebuild your mailbox, copies of your emails stored on your local machine are deleted and downloaded again from your mail server. This process will take a longer time if you have a large mailbox with a lot of messages.

Post-Script: The Mail app crashing immediately upon attempting to retrieve email from your SmarterMail account could also be due to a malformed message in your SmarterMail account that Mac Mail cannot handle or is triggering a Junk Mail action in Mac Mail. Try logging in to your webmail and manually removing any questionable emails or emails with attachments to see if that fixes the Mail app crashes. (I've seen this happen with 8-bit encoded PDF mime-types as Mail Mail seems to expect 7-bit encoded PDF mime-types.)

Thanks for the detailed response, I'm not sure if all apply to my situation, although I'll see if any of these work.

Problems:

1) Apple Mail crashes as soon as I open it (so I can't rebuild)

2) Apple Mail crashes on start as soon as I add any of my 8 SM email accounts to it.

3) Non-SM accounts do not cause a crash (I have 5 accounts running fine on there, hotmail, outlook, gmail and a few of other work emails on different non-SM servers)

4) This is the same with my wife's Mac with her accounts (she has 2 SM accounts)

Common factors:

1) Apple Mail

2) Smartermail server

3) My connection

From your suggestions to try:

1) I'll have a look at the passwords and try changing one so it doesn't have any characters in it. See if that makes a difference.

2) I'll check the authentication method is correct.

3) I might create an account with no emails in it to see if that works

Thanks

ok, I created a test email account on a domain that has an account that fails.

The new account works ok, I have been able to send and receive from this test account.

So this would point to either the number of emails in the account being a problem, the mailbox size, the content in the emails, the account cache (if that's stored somewhere even when the account is deleted?) or something else?

But they only fail in Apple Mail and only the SM email accounts (apart from the test one I set up), I've tried various other mail clients and they all work fine with these accounts.

Looking in the IMAP logs I have this recorded a few times:

[2023.01.25] 12:42:44.525 [myip][50031480] Failed to fetch data item 29126 in 'ENVELOPE' for myemailaddress in Spam-Hi.

[2023.01.25] System.Exception: angled address does not end.

[2023.01.25]    at MailService.GroupFileAccess.RFC2822Helper.GetAngledAddressEndIndex(String text, Int32 startIndex)

[2023.01.25]    at MailService.GroupFileAccess.RFC2822AddressLine.Parse()

[2023.01.25]    at MailService.Protocols.IMAP.ImapMessageWrapper.AddressWrap(String address)

[2023.01.25]    at MailService.Protocols.IMAP.ImapMessageWrapper.GetEnvelope(RFC2822Header header, String& partValue)

[2023.01.25]    at MailService.Protocols.IMAP.ImapMessageWrapper.GetPart(User user, String partItem)

[2023.01.25]    at MailService.TcpServerLib.IMAP.IMAPSession.FetchDataItems(List`1 idList, List`1 itemList, Nullable`1 changedSince, List`1& replyArr)

[2023.01.25] 12:42:44.541 [81.103.106.102][50031480] disconnected at 1/25/2023 12:42:44 PM