After updating my macbookpro , my apple mail is not longer functioning properly. When Apple mail is launched, it opens, but begins to flash back and forth between the inbox and message being sent - after a message has been sent.
John
MacBook Pro with Retina display, OS X Mavericks (10.9.1)
Try this:
Boot the computer into Safe Mode, then restart normally. This will be slower than a normal startup.
Intel-based Macs: Resetting the System Management Controller (SMC)
Resetting your Mac's PRAM and NVRAM
Repair the Hard Drive and Permissions - El Capitan
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears.
Repair
When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the indented Macintosh HD entry from the the left side list. Click on the First Aid tab in the toolbar.. If Disk Utility reports any errors that have been fixed, then re-run First Aid until no errors are reported. Wait until the operation completes, then quit Disk Utility and return to the main menu. Select Restart from the Apple menu.
Now, Download and Reinstall OS X El Capitan 10.11.3 Combo Update.
Please disconnect from the Internet temporarily, if necessary, by turning off Wi-Fi and/or unplugging the Ethernet cable, whichever is applicable.
From the Mail menu bar, select
Window ▹ Connection Doctor
Look for the outgoing mail (SMTP) account in the window that opens. Double-click it. Another window will open, showing a list of all the outgoing mail accounts. The affected one will be selected. Make a note of the settings. Click the minus-sign button to delete it, then click OK.
Reconnect to the Internet and add the account back with the same settings.
Apple Mail is no longer working properly with El Capitan update 10.11.3
