Sending Emails - Creator/ZeptoMail/Campaigns

Hi There,

I'm looking for some advice on the topic of sending emails triggered by content in a creator application.

We have a customer & order system application in creator and would like to start sending out emails to customers for order confirmations, policy documents and sales receipts. We currently send sales receipts direct from the creator application but just as plain text with the sales receipt as a PDF attachment. I also have a flow setup to create the customers in campaign so we can ultiise the marketing automation of that service.

We have a few more emails we'd like to send as mentioned, some with attachments and some without. What is the preferred method to send the transactional email like this?

Thanks, Jake