Quota limit reached when checking email...what does this mean?

A mail quota is the amount of space reserved on the server to house your email messages. If you don't delete messages from your mail server, your mailbox may have reached the storage limit set by your Internet Service Provider.

On your iMac,

1. Open Mail. Click the Mail menu and select Preferences.
2. Highlight each mail account and click the Edit button.
3. Click the Advanced Options tab and check the Remove copy from server after retrieving a message option and select the desired time from the drop-down menu. There is also a "remove now" button you can use.
4. Click OK and close the Mail Preferences window.

I would contact your email provider.

todd1010 wrote:

I guess this is option is for POP email and not IMAP email.

Correct. With IMAP accounts you must delete the email on your iMac (or iPhone) to remove it from the server.

Not sure…unless she has lots of messages stored in folders or the error is coming from a different account.