You need to be a space administrator to manage mail accounts for a space. See Space Permissions.

Confluence will import mail from these POP/IMAP mail accounts into the space's mail archive.

To manage mail accounts:

1. 
2. Add an account if required. See Adding a Mail Account.
3. For each of the existing mail accounts listed, you can:
   • Edit: Change the configuration settings for the mail account.
   • Remove: Remove the account permanently.
   • Disable/Enable: Temporarily disable the account, or enable a disabled account.