How to resolve Slow Email Opening on macOS Monterey 12.4

This has been driving me nuts too for a long time. I, too, went into Mail>Preferences>Privacy and unchecked "Protect Mail Activity" and made sure "Hide IP Address" was checked.

But the main tings I did was make sure the default email reader was set to "Mail." Mine was on Google for whatever reason. Mail>General>Default Email reader>Mail

Hope this helps someone

Appears that this slow mo mail is bugging everyone..."slow email" what an oxymoron.

I have found if I remember to shift before clicking on the Mail app, it seems to speed it up a bit.

Apple:left hand not knowing what right hand doing. Oh just wait til they start using AI to answer our email....Yikes!

I have had the same issue for over a year; thus, I have gotten used to waiting for a minute or using another device to check my mail. I am happy to say that this is not an issue any longer. After updating to macOS Ventura 13.3.1 (22E261), the first time I opened the mail application, I saw a window of "rebuilding database" or similar, and the application was up in about a second. Now the problem seems to be solved. Rest assured, I have tried to apply several fixes for the past year, and nothing has worked - until now. I hope this is fixed for the rest of you as well!

For what it's worth, my friend the lawyer has heard that a class action is being seriously considered to make Apple admit the problem and fix it.

I doubt very much they want yet another potential $2bn hole in their finances on top of their already slowing sales...

I'd been having the same problem recently as well. One thing that I noticed was that I had a Rule (which I have no idea where it came from) that was active that basically said to move all messages to mailbox "not specified". It's too early to see if deleting this rule will change Mac Mail behavior, but it certainly couldn't be helping speed things up! I still have the privacy setting active as I want to see if deletion of this rule may fix the slow loading of email content. Anyway, it might be a good idea to check that any active rules you have are doing what you want them to do.

Yeah, me too, it would take about 60 to 90 seconds for Mail.app to come on screen.

I'm running a 14 inch MacBook Pro M1 with 16 gigs and a 500 Flash storage SSD, OS 12.6.7

Tonight, I deleted both my Gmail and personal Domain, then went into hidden user library and deleted everything Mail related, in every sub folder, I also signed out of my Apple ID. Restarted, added my accounts back, No F'ing change. Apple, please pay more attention to Mac OS, and ala Ventura, even though Timmy promised not to screw with OS X, there you go with a ridiculous revamp of System Preferences to System Settings, and organized them in a fashion only a person with ADHD could love and what looks like a merge with iOS, what is wrong with you people??!!!

Just wanted to note that I upgraded to Ventura last week and I'm still experiencing the issue. Same as before - Mail will be very slow to load content (I have to wait minutes for it to appear). Usually when this happens, Safari will also refuse to load content, but Firefox works fine. Same as before.

This leads me to believe that some resource that is shared between Mail.app and Safari - but not Firefox - is getting hung up. I've poked around in Activity Monitor but nothing obvious shows up there. Nothing is gobbling up all the CPU or anything like that.

None of the suggestions worked for me. 2021 MBP 14 inch M1 chip, 16 gigs / 500 / 12.7.4

Tried Safe Boot, unchecked "protect mail activity", checked hide IP. Disabled SIP and rebuilt mail envelope index, dumped caches from user/lib. Still takes 30 seconds to load. Got the same accounts in mail app on an Intel Mac Mini 2018 running Mojave, and it launches immediately!

Are you running any VPN, Anti-Virus, or Cleaning apps?

What DNS settings do you have?

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

8.8.8.8

8.8.4.4

1.1.1.1

9.9.9.9

Apply.

MacOS13 & 14...

System Setttings>Network, click a network service on the right, click Details, then click DNS. (You may need to scroll down.)

Enter these numbers...

8.8.8.8

8.8.4.4

1.1.1.1

9.9.9.9

Apply.

Apple has pretty much neutered Console reports & logging for mere mortals, I think what we want to search for is "failed" or "repeated", or look for big gaps between lines time wise.

Have you tried a different channel on the Wifi Router?

Appears this is an old thread. Slow email is an oxymoron given Apples's obsession with the quickest/the finest resolution/the best in everything they peddle.

Planned obsolescence: don't y'all just want to rush out a dish out a few K for a new mac book so you get a 90's product to work right?

You're not really dialed into the minutia, so, just kindly refrain...if you were able to follow the thread, you'd see I have a 2021 M1 MBP. While the thread did start in Jun 2022, it makes it no less relevant, since the issue is still a problem.

Thanks, I see nothing for certain, but this Piques my interest...

Network:

Interface en10: Thunderbolt Ethernet

Interface en4: Ethernet Adapter (en4)

Interface en5: Ethernet Adapter (en5)

Interface en6: Ethernet Adapter (en6)

Interface en12: iPhone USB 3

Interface en13: iPhone USB 4

Interface fw0: Thunderbolt FireWire

Interface en0: Wi-Fi

802.11 a/b/g/n/ac/ax

Interface en9: iPad USB

Interface en14: iPhone

Interface bridge0: Thunderbolt Bridge

How many of those are actively in use?

What all iCloud syncing are you doing?

I just removed all the extra interfaces from my Network Panel.

I restarted after removing all those with no change.

I don't have an iPad, BUT, I might have hooked a client unit to mine to do a restore, don't remember doing so though.

I connect my iPhone 15 to my MBP to charge, not to sync.

A few months ago I replaced an iPhone SE with the 15.

Are there other places "under the hood" where those network interfaces are stored?

Via my Apple ID I have photo sync on, iCloud Drive (not using desktop & Doc storage), Contacts, Calendars, Notes, Find My Mac

Incredibly tough these days to follow what the OS is doing, but in the past the New Location seemed to handle all the file changes between versions.

I'd check ~/Library/Saved Application State folder for one place.

Oh, did we ever try...

To find out if it's system wide or user specific, try this...

Open System Preferences>Users & Groups, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.

Does it work in the new account?