I'm looking out for your suggestion or concept to work on this task. Is it possible to include contacts of specified data extension to target data extension using AMPscript and send them emails to both DE contacts?
I'm thinking of this situation because I'm sending from a journey builder so I can't use two data extensions as entry sources. I don't have the right to update the entry source data extension through the query because it's our main data extension.
Is there any way that I can achieve this using AMPscript?