Everybody will be able to see its contents. Do not include usernames, passwords or any other sensitive information.
Latest post by nicholas on Wednesday, 07 October 2026 09:07 CDT
It's always Sender, of course. It's the one address field that all protections (e.g. SPF, DKIM, DMARC) are there to guarantee is legitimate.
The Reply-To field is free text; I can have my Reply-To to be your address, nobody will stop me. If I allowed that to set the ticket owner, spoofing tickets would be trivial.
The Return-Path is explicitly for bounced emails. It would be nonsensical using this to determine provenance...
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
If you are sending the email, how do your clients end up sending you the message? I am feeling a bit confused here by what you're trying to do.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
That's very much what I expected to be the case, and the solution I would have proposed :)
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
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