Mailbox unavailable - Old users - Need update email address next login.

Hi there.

I new with xenforo, and I have more than 20.000 users imported from vbulletin.

With this new system, I have so many emails delivery reply from my forum with "Mailbox Unavailable".

There is anyway or plugin, to force "marked" users to change and validate your email address on the next login.

Thank you for the help.
Hi. Thanks for the reply.

If I manually set this users as Email invalid (bounced), this will make he need to update and confirm his email address?

Thank you again!