Apple Mail remove Email copy from server after download
If you are struggling to keep your mailbox from being full you can set Mac Mail to automatically remove emails from the server after a set period of time from them being downloaded to your device.
If you are struggling to keep your mailbox from being full you can set Mac Mail to automatically remove emails from the server after a set period of time from them being downloaded to your device.
OS X Mail
- Open the Mail app, then choose Preferences from the Mail menu.
- Click Accounts, then select your POP account from the list of accounts.
- Click the Advanced tab.
- To keep new messages on the email server so that other devices can also retrieve them, follow either of these steps:
Deselect the “Remove copy from server after retrieving a message” checkbox.
Or select the checkbox, then choose an option from the pop-up menu. If you choose “Immediately,” your email provider deletes its copy of a message after Mail retrieves it. If you choose “When moved from Inbox,” your email provider deletes its copy of a message as soon as you move the message out of your inbox.
Close Mail preferences to save your settings.
About "Pop Locking"
POP accounts support one connection at a time. If you use multiple devices to access your account at the same time, the devices might get locked out of the account. As a result, you might see a message that there are too many connections at the same time, or you might be asked for the account password. Wait about 20 minutes before trying again, or contact your email service provider for help.
Source (Apple)