Mail content slow to load

Hi bettercallsaul,

Thank you for posting in Apple Support Communities! Does this only happen with Mail? What is the available storage capacity on your Mac? You can confirm by going to the Apple menu (  ) > About this Mac > Storage.

If your storage is low, you may want to free up some space by deleting files, apps, photos and videos that you do not need. Check out more information on freeing up storage space here: Free up storage space on your Mac - Apple Support.

You can also find additional troubleshooting steps here: If your Mac runs slowly - Apple Support

Hope that helps!

bettercallsaul,

Thank you for confirming that for us! Does the content load instantly when using the webmail? Have you disabled and enabled the iCloud email to see if this continues to occur? You mentioned that this happens with all accounts, have those accounts been removed and re-added as well?

Check out some additional troubleshooting steps you can take here: If you can't receive email on your iPhone, iPad, or iPod touch - Apple Support

If this continues, you may want to reach out to Apple Support for further assistance. Depending on your region, you may be able to reach them here: Get Support.

Take Care!

Any Third Party Applications that will interfere with the normal operation of the OS,  is an invitation for disaster and comprising the Operating System

Certain Applications maybe available on the Apple Apps Store - this only means the Developer is prepared to pay Apple a portion on each sale. What the Application may do to the computer is up to the User to check this out before purchase

Any of the below should be removed as per Developers Instructions 

This will include CleanMyMac , This will include BitDefender , 

This will included Norton Antivirus , Sophos Av Software

Intego AntiVirus, McAfee, MacKeeper, Avast AntiVirus

Ad Guard, Webroot , ESET , Avira

The The Built in Security  is all that is required.

Understand, we are all working Remotely from all around the world. 

Therefore, we do not have the On-Hands experience the User ( you ) have with this computer.

The next best thing for us to having a semi - actual On-Hand experience  with this computer is to follow the steps below

Download the Application Etrecheck directly from the Developer. 

The application is free or paid from added features. 

It will take a Snap Shot -  both the hardware and software.

 The Report will Not Reveal Any Personal Information. 

Post back the Full Report - copy and paste - using the Additional Text Icon ( 3rd Icon to last )

We can have a look at the report for possible issues and may have possible suggestions to resolve the issues.

Not Loaded] LittleSnitch.kext - at.obdev.nke.LittleSnitch (3.3 - SDK 10.8)

A Great Source of interfering with Normal Internet connections

There are other issues at play which I have not gotten into but specific to Slow Loading of Apple Mail with Whomever is your E-Mail Account are - this will come into play

Do you have a Microsoft Exchange account? There have been a number of Mail topics where they have problems and all had an MS Exchange account.

Don't know about a fix. Just trying to determine a common denominator.

What email providers do you have Mail handing?