When sending mail the Apple mail "sent" folder shows 2 copies of the message. The suggestions that I have found (delete the MessageSorting.plist and editing the mailbox behavior) don't exist as directed. I'm about to give up
G5, Mac OS X (10.4.11)
This morning I did a test I should have done earlier.
1. Sent test email from my wife's computer with both iCloud and msn.com accounts enabled - result: duplicate copies in Sent folder
2. Disabled my wife's msn.com account leaving her iCloud account enabled, then sent test email - result: single copy in Sent folder.
3. Disabled my wife's iCloud account leaving her msn.com account enabled, then sent test email - result: duplicate copies in Sent folder.
It looks like an interaction with msn.com that we will have to live with. Thanks to those who replied.
This morning I did a test I should have done earlier.
1. Sent test email from my wife's computer with both iCloud and msn.com accounts enabled - result: duplicate copies in Sent folder
2. Disabled my wife's msn.com account leaving her iCloud account enabled, then sent test email - result: single copy in Sent folder.
3. Disabled my wife's iCloud account leaving her msn.com account enabled, then sent test email - result: duplicate copies in Sent folder.
It looks like an interaction with msn.com that we will have to live with. Thanks to those who replied.
Sent Mailbox
Select a mailbox on the mail server or on your Mac to store sent messages.
This option is available only for IMAP accounts.
Mail Mailbox Behaviors preferences on Mac
Try this method - create a new user account see this article https://support.apple.com/en-in/HT204443
and in this account configure the apple mail application see this article https://support.apple.com/en-in/guide/mail/set-up-mail-with-your-email-accounts- mail35803/mac
If issue still persists , its a software glitch so reinstall the os ( erase the drive completely ) see this article macOS Sierra: Erase and reinstall macOS
The problem happens on my wife's iMac, but both of us have the same setting for mailbox behavior
sent Mailbox "Sent messages". On my machine there is no problem, sent messages (single copy) are saved in the Sent folder, subfolder iCloud. Up until yesterday her computer worked exactly the same. She uses "msn.com", but when I use that provider it works fine and did on her computer until yesterday.
A suggestion why don't you use gmail account , there are very less issues using it , might be some problems with your internet service provider .
Duplicate copies in sent folder
