Most bulk email tools ask you to upload your customer list. That single step is what blocks approval in regulated teams.
The riskiest part of a mail merge is rarely the sending. It is the copy of your customer data sitting on a vendor's server.
Read the sheet you already own
Mailvern reads the sheet you already own and sends through your own Gmail account, so campaign data does not need to be uploaded to third-party servers.
A shorter review
That keeps the review conversation short: same Workspace, same account, same audit trail your admins already use.