Mail app shows 100 gb usage and running continuously for 1 month

Acumen wrote:

Hi Team,

Check my topic posted regarding mail app on iCloud last month. Link

Simply tried to download my gmail 60 gb data to iCloud mailbox.

In regards to the above post, it's been over a month my mail app on iMac is doing some activity which I don't understand. And my mail app shows 103 gb and not reducing even after 1 month of waiting on this popup.

Sample read message

READ May 15 23:34:46.033 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:p40-imap.mail.me.com -- port:993 -- socket:0x60002c480960 -- thread:0x60000b5fcf40

* STATUS "Deleted Messages" (MESSAGES 0 UIDNEXT 12929 UIDVALIDITY 1561306451 UNSEEN 0 HIGHESTMODSEQ 907282)

86.12 OK STATUS completed (took 13 ms)

READ May 15 23:34:46.053 [kCFStreamSocketSecurityLevelTLSv1_2] -- host:p40-imap.mail.me.com -- port:993 -- socket:0x60002c480960 -- thread:0x60000b5fcf40

* STATUS "Junk" (MESSAGES 0 UIDNEXT 14 UIDVALIDITY 1561306451 UNSEEN 0 HIGHESTMODSEQ 901392)

87.12 OK STATUS completed (took 18 ms)

Sign out of iCloud and back in again...and compare your results

Sign out of iCloud on you ...Mac ...

For problem accounts—the go to way to sort things out is to delete the account(s) from the Mail.app, then add it back.

Remove email accounts in Mail on Mac

Remove email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Note—

IMAP accounts stay on the server, so no local loss, when you re-sync

POP accounts download and remove from the server—therefor save your inbox/sent box if you want them

“On My Mac" is just that, local folders you created and moved mail into. So no loss

no insight or resolve—

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

Contact Apple for support and service - Apple Support

How much space do you have in iCloud?

What is your upload speed (upload is sending files and data from your Mac to somewhere else in the internet; download is bringing files/data from elsewhere in the internet to your Mac)?

8 Mbps = 1 MBps

You have 100 GB of email you are trying to upload.

Typical upload speed is 1 MBps, some providers offer much faster than that. If your upload speed is 1 MBps, uploading 100 GB should take a bit more than 1 day.

Look at Activity Monitor, do you see a steady upload of 1 MBps? What upload speed do you see there?