When someone leaves your business, their mailbox still receives customer emails, invoices and password resets. Deleting it immediately loses those messages; leaving it untouched keeps a security hole open. This routine keeps the business running while closing access.
Before you start
- Agree internally who takes over the address (a colleague or a shared mailbox).
- Check any legal or company retention rules for business email.
- Have access to cPanel; see log in to cPanel.
Step 1: block their access immediately
- Open cPanel → Email → Email Accounts and click Manage next to the address.
- Under Security, set a new random password (Generate) and do not share it.
- Under Logging In, choose Suspend. Webmail, IMAP and POP3 logins stop; incoming mail is still accepted.
- Click Update Email Settings.
- Remove the person from any other access too: FTP accounts, User Manager sub-accounts, CMS admin users, and change the cPanel password if they knew it.
Tip: Suspending logins also disconnects their phone and laptop, which otherwise keep downloading mail with the old password.
Step 2: keep new mail flowing
- Forward the address to the colleague: Email → Forwarders → Add Forwarder, address = the old mailbox, destination = colleague's address. See forwarders.
- Or add an autoresponder telling senders who to contact instead; see autoresponders.
- Update the address in places where it is used for logins (domain registrar, payment providers, social media) so password resets reach someone who still works for you.
Step 3: archive the old mail
Choose one way to keep a copy of the existing messages:
- Move into a colleague's mailbox: temporarily unsuspend login, add both accounts to Thunderbird and copy folders across (as in IMAP migration), then suspend again.
- Download an archive: in JetBackup 5 → Email Backups, select the account and click Download. See JetBackup email.
- Keep the mailbox suspended for a few months if you are unsure, then decide.
Step 4: delete the mailbox
- Once mail is archived and forwarding is in place, go to Email Accounts, tick the account and click Delete.
- The forwarder you created keeps working even after the mailbox is gone, because forwarders are separate.
- Check Disk Usage; the space is released after a short while.
Warning: Deleting a mailbox deletes its messages immediately. They can only be recovered from a JetBackup backup taken before the deletion, and only for as long as backups are retained.
Checklist
- Password changed and logins suspended
- Forwarder or autoresponder active
- Old mail archived
- Account email updated at registrars and services
- Mailbox deleted after the agreed period
