I'm trying to figure out how I could use a email template to invite leads to a trade show.  We go to about a dozen shows a year.  The information would be the same except for the Show Name, Booth, Date and Location.  I thought I could add those fields into a CRM Campaign and then email leads that way the CRM Campaigns template can only be used for internal email notifications.  Creating a new email template for each show is not practical.  Changing an existing template isn't the best option either.  It opens room for error and missing details.

Is there some other way I can do this?  Could we use a different CRM module or would Zoho Campaigns work for this?  Essentially we are trying to send event invites based off a template with merge tags for the event details.