Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
Could you please explain your question a little more ?
Yes, I'm here. What is the issue you are having ?
Do you want to delete emails ?
Please the explain the issue as much as possible
Deleting emails usually don't give space. You need to delete unwanted musics, movies, videos etc and empty trash. Open your home folder and trash all unwanted files
What is the total space and how much is available now ?
Don't turn off your Mac. If you turn off your Mac, it may not turn on again.
Here the only solution is, delete unwanted files and empty trash. Do you have an external hard drive there ?
Ok, lets check if Mail is taking up the space. In Finder, hold down Option key, click on GO menu and select Library. In Library, select Mail folder and press Command and I. What is the space used for Mail folder ?
Who is your email provider ? Gmail Yahoo etc
That is an optional additional service. If you accept the offer, then I will connect to your computer and try to fix this issue for you.
Or I can give you instructions in here without any additional payment.
You will have to delete those emails from Yahoo server first, then turn off internet/WiFi of your Mac. and delete those old emails from Mail. Then rebuild and this won't download those messages from server
Messages alone won't take up your space. It is probably the attachments of emails taking up the space. You should delete the attachments. Go to Mail folder (in Library), open Mail Downloads folder and trash the files from there (make sure you don't trash important attachments)
Also hold down Option, click on Go > Library. Open Containers/com.apple.mail/Data/Library/Mail Downloads and trash files from here as well. Let me know how it goes
Let me know how it goes.
Also prevent your Mail from downloading attachment automatically. Open Mail go to Mail menu > Preferences > Accounts > Advanced. Uncheck the box labeled "Automatically download all attachments"