We use SMTP to send our system emails, and I have a vendor that needs to see something they are calling the "payload" that is sent via SMTP for our transactional emails. Any ideas on how to obtain that from the server or admin panel?
There isn't much else it could be. SMTP isn't complicated. It sounds like these people don't know what they are asking for. If they do, they should be explaining to you how to get it.
There isn't much else it could be. SMTP isn't complicated. It sounds like these people don't know what they are asking for. If they do, they should be explaining to you how to get it.
Configure your dev server to send email via SMTP using the mailtrap settings.
Send emails to a test user on your dev server.
Send the data captured to Sendgrid?
If you are prepared to pay for a business account on mailtrap - you can do this all in production by sending an email to a specific email address for analysis.