Mac OS X Yosemite v. 10.10.5: problem opening the email program.
When OS X is updated to Yosemite version on our Mac, you may have problems opening the email program Mail.
Trying to open the program, Mail get stuck trying to download mail messages and we have to close it by the Force Quit option from the main menu.
The solution to this problem is:
– We look for the folder UserName/Library/Mail/v2/MailData
– Delete files that start with the name “Envelop Index”
– Delete files that start with the name “ExternalUpdates”
– We open Mail program. Now, application will take a few minutes to rebuild the index of emails stored. Once finished, we have Mail app ready to use.