Mail is Slow and lagging.

Monterey 12.6

I have NOTHING additional installed. I have also tried turning on and off every option I can think of in Mail/preferences none of that is any help.

I open Mail and wait, wait, wait for messages to load. Sometimes they appear right away but then disappear and again, I wait. This problem is posted all over this forum under many different headings. It is driving me to the point of insanity.

I finally reinstalled my OS, no help.

Nothing works, there appears to be no solution.

Same for me. There has to be a reason. I have a Mac mini M1, MacBook Air M1 and MacBook Pro M1 Max. All are configured identically.

MacBook Pro M1 Max is the only one that has this "I open Mail and wait, wait, wait for messages to load". Mac mini M1 and MacBook Air M1 have never had this problem ... only the MacBook Pro M1 Max has this problem.

"CleanMyMac is considered by most experienced users in these forums to be akin to malware. "

I think that is unfounded and inaccurate. I doubt that anyone who uses it considers it malware.

I have used MacPaw's CleanMyMac for five years (and their ClearVPN for 2 years) and recommend it.

As to the issue that Mail is having, as other have said, it varies from time to time and machine to machine. This morning, for instance, the messages were all visible immediately.

Concerning the suggestion to delete CMM for the allegation that it is affecting Mail, I have found CMM so useful that I would not like to do without it. "Cleaning" is but the least significant and useful of its many features.

"Apple, please look into this issue it's causing a lot of headache for MANY of your users. "

If reported to Apple as a problem with CMM, Apple is likely to say it's a third party issue and not their problem.

It will be quicker and more productive to ask MacPaw to look at it. Those of us who use CMM should use its Support menu to start a ticket (they call it a "request") with MacPaw.

My request will say that some members in Apple Discussions report temporary blank message fields in Mail, some of those members run CMM, and other members who don't use CMM are saying CMM is likely causing the problem.

To add to this response, I want to point out that I now keep my iPhone right by my computer.

When I open Mail on my iMac I watch for minutes while I wait for mail to appear in whole and simultaneously open my iPhone and the mail is instantly there in IOS Mail.

There is no sensible reason for why this is happening, connected to the same network, same mail accounts, it is just ridiculous.

Your post is inaccurate. I run no third party utilities, certainly not CMM.

I have three Macs: Mac mini M1, MacBook Air M1, MacBook Pro M1 Max. All are configured the same.

Only the MacBook Pro M1 Max has this horrible Mail application problem: wait for minutes for mail message lists to appear.

Other two Macs work perfectly and are responsive.

Mail is unusable on the MacBook Pro M1 Max.

"Your post is inaccurate. I run no third party utilities, certainly not CMM."

That appears to be in response to my post.

It appears to say that my post is inaccurate.

My post says "some members in Apple Discussions report temporary blank message fields in Mail, some of those members run CMM.."

In other words, some people who have the problem are not running CMM.

Like you.

My MacBook Pro M1 Max Mail is unusable. Take forever to load messages list, etc.

I have three Macs: Mac mini M1, MacBook Air M1 and MacBook Pro M1 Max.

I have no third party apps and no extensions.

All three Mac are configured the same.

Only the MacBook Pro M1 Max has unusable slow Mail. The other two Macs are OK.

So I see that OS 13 is for "iMac models from 2017 or later". My iMac is Late 2015 bought in 2017 so it won't take OS 13.

That's why when I just ran Software Update, it left me the same OS 12.6.1that I had before.

So if OS 13 is the solution to the Mail problem, I need a new computer to see it.

Not sure what slow loading means. Does that refer to the launching, or the downloading, or the loading/display after downloading.

Anyway, speed is not the problem and may be unrelated to the problem. The problem is that after loading, all the messages can be seen, but their message fields can be seen for only 10-15 seconds, long enough to speed-read read a couple of short ones, and begin to reply to one. And then all the message fields go empty for a couple of minutes.

And, it happens with old messages stored in folders. While typing this, I opened the folder of my mail-order emails, and all the message fields were blank for 15 seconds. But when I looked at all my other folders, their message fields appeared immediately.

You did not mention the Mail problem of temporarily empty message fields in old messages that were previously downloaded. Do you not have that?

I must say that since updating from 12.6.1 to 13.0, my Mail has been quick and perfect.

My mac is a 27 inch, 2017, 3.8 Quad-Core Intel Core i5 with 16GB of memory, purchased new in 2019. The machine is very responsive with Ventura 13 so long as Apple mail is NOT open; and in response to vintage 42, I have seen temporary empty message fields in old messages tha have been downloaded. I have also seen the trackpad mouse get "jumpy" when I am working outside of mail and new messages are being downloaded. I also have monitored CPU and Memory and see nothing that indicates very high demands.

Recap. Adding a screenshot.

All three of my Macs have been updated to Ventura and latest update: now at 13.0.1.

Three Macs: MacBook Air M1, Mac mini M1, 14" MacBook Pro M1 Max

All three Macs configured the same in Mail and in iCloud. No plug-ins or third-party apps. I don't like to use third party plugins, apps or utilities.

The 14" MacBook Pro M1 Max is still slow with blank Mail windows for 10s of seconds with no activity showing in the Activity window.

The MacBook Air M1 and Mac Mini M1 are perfectly fine and responsive with no delays or blank windows.

MacBook Air and Mac mini never do this, but 14" MacBook Pro M1 Max Mail will look like this (see image) for 10 to 20 seconds:

The ~/Library/Application Support/Mail/Plug-ins/Bundles/Library/Mail/Bundles/Properties.plist doesn't exist on any of my Monterey of Ventura systems. In fact ~/Library/Application Support/Mail/Plug-ins doesn't exist; perhaps because I have no Mail Plug-ins. But the slow mail rendering still occurs.

Our 2015 21.5" iMac on Monterrey had the Mail problems of slow loading and blank messages.

Our 2022 24" iMac on Ventura had no problems on Monterrey or now on Ventura.

Our 2019 13" MacBook Air had no problems on Monterrey or now on Ventura.

All running Sophos and ClamX antivirus, and CMMX utility.