I read that comment and am very aware that an ESP has access to all the information you give them. It comes down to internal controls. If the email in the OP i

I read that comment and am very aware that an ESP has access to all the information you give them. It comes down to internal controls. If the email in the OP is actually an approach from a compliance or customer management department, it's a clumsy attempt. To me, it reads as a sales pitch. If so, my opinion remains unchanged - I don't think I'd be happy if sales people had access to the recipient domains of my outbound emails. Edit: Re-reading the post, the Mailgun employee says in their reply: > First, you're right, it is a low effort sales template. It does work. That really does suggest that this was an attempt at an upsell from a sales person.