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Mail Client (Version 11.5) "Cannot Send" Using iCloud Server

I run Mac OS 10.13.6 and cannot get email to go OUT using iCloud Mail Client 11.5. I get this every time. Do I have an operating system incompatibility ... that is NOT repairable?

Posted on Dec 22, 2019 9:46 AM

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Question marked as Top-ranking reply

Posted on Dec 22, 2019 10:40 AM

Mail (El Capitan): Mail troubleshooting


Mail (El Capitan): If you can’t send messages


Mail not sending or receiving messages after updating OS X


As a backup, if you have emails in your account inbox, select the mailbox, then Mail/Mailbox/Export Mailbox, and export the mailbox to your Desktop. Then go to Mail/Preferences/Accounts, select the account, and delete it using the minus sign. Quit/reopen Mail and add the account back. Test. If necessary, to recover missing emails, use Mail/File/Import to import the mailbox on your Desktop. It normal shows in the On My Mac section. Drag emails to the account inbox if desired.

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Question marked as Top-ranking reply

Dec 22, 2019 10:40 AM in response to jed62454

Mail (El Capitan): Mail troubleshooting


Mail (El Capitan): If you can’t send messages


Mail not sending or receiving messages after updating OS X


As a backup, if you have emails in your account inbox, select the mailbox, then Mail/Mailbox/Export Mailbox, and export the mailbox to your Desktop. Then go to Mail/Preferences/Accounts, select the account, and delete it using the minus sign. Quit/reopen Mail and add the account back. Test. If necessary, to recover missing emails, use Mail/File/Import to import the mailbox on your Desktop. It normal shows in the On My Mac section. Drag emails to the account inbox if desired.

Mail Client (Version 11.5) "Cannot Send" Using iCloud Server

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