Merge Fields in Email Templates using Custom Object Data

Merge Fields in Email Templates using Custom Object Data

I'm struggling with the following:

MyCustomData has fields "serial number", "site ID", "chip number"

Contact Has-a MyCustomData
Account has-a MyCustomerData

I want to email all contacts, or account contacts using an email template but I want to reference some of the fields in MyCustomData object. The only way I can get this to work is if I populate the MyCustomData->"Email" field and use that but it sort of defeats the purpose of having the links back to the Contacts and Accounts.

Any thoughts?


Thanks,

Lewis