Mac/iOS IMAP command 'APPEND' error

1. At the top of the screen go to Preferences
2. Choose Accounts
3. Select the EPB email account
4. Choose Mailbox Behaviors
5. Choose Sent Mailbox
6. Select "All Sent"

1. Open iOS Settings
2. Tap on Apps then Mail (for older iOS just scroll down to Mail)
3. Tap on Accounts
4. Tap on the EPB email account
5. Tap on Mailbox Behaviors
6. Tap on Sent Mailbox
7. Tap on "All Sent"

Removing the email account

1. At the top of the screen go to Preferences
2. Choose Accounts
3. Select the EPB email account
4. Click the - button on the bottom.

Re-add the email account

Follow the steps under Mac Mail.

Removing the email account

1. Open the iOS settings.
2. Tap on Apps, then tap on Mail (or just Mail on older versions)
3. Tap on Accounts.
4. Tap on the EPB email account
5. Tap on Delete Account in red at the bottom.

Re-add the email account

Follow the steps under Ipad/Iphone Devices.