In my CRM, I have an 'Event' type of Camapigns record for which my system sends confirmation emails. Imagine that I use the Campaigns module to track my business events.

Ideally I could have a separate email template per campaign.  I'd need something like a 'lookup field for email template' but don't think that's possible. Any possible workarounds?

Once again the context is that I'd prefer sending custom email template per campaign record. This should be done automatically, i. e. not via manual (mass) email.