Open the Mail app, click the Mail menu, and select Preferences. Click the Accounts icon and select the account you want to change settings for.
Failing this, you can only hope to control the amount of messages Mail downloads via server settings on your email server. Email Basics: You could also look for a third-party email client on the Mac App Store or elsewhere.
Other email clients should offer an option to store less emails offline and limit the size of our cache to a manageable size. To stop using the Mail app, first disable or delete your email accounts.
ARCHIVED: In Mac OS X Mail, how do I remove an IMAP or Exchange account?
Click the Mail menu in Mail and select Accounts. Uncheck the Mail option for accounts you no longer want to use Mail with.
Mail will stop downloading emails from those accounts. Right-click or Control-click the folder with the name of your email account and select Move to Trash.
You can then empty your trash to free up all those gigabytes. If you have multiple email accounts with cached emails you want to remove, you should delete each corresponding folder.
Create or delete mailboxes in Mail on Mac
In Mac OS X Mail, how do I remove an IMAP or Exchange account?
How to completely remove emails in OS X? Ask Question.
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