They say it is not. I have sent them emails and even the template. It's something that is delivered from the system to their servers.I'd think the payload is just the contents of the email.
Well it's Sendgrid, so if they don't know what it is, we're screwed lolThere 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.
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