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Well they still claim it is impossible to connect different masked emails together. If you as a sender can reliably determine the target email address, then tha
by tmarice 8mo ago
Well they still claim it is impossible to connect different masked emails together. If you as a sender can reliably determine the target email
address, then that claim
is untrue as well.
- chrisjj 8mo agoWhere are they still claiming that?
- tmarice 8mo agoOn their Masked Email feature page https://www.fastmail.com/features/masked-email/ https://www.fastmail.com/features/masked-email/ > Companies have no way of linking different Masked Email addresses together to track you. I have received the Fastmail support response, and since they do not consider this a vulnerability, I'll post it here: - You have a Masked Email - You have set up forwarding from your Fastmail account to another email service - The other email service rejects the mail for some reason - The bounce message goes back to the original sender, and may include the email addresses along the chain after the Masked Email address. I'm assuming the bounce message contains the X-Resolved-To header mentioned in the other HN thread linked above.
- chrisjj 8mo agoThanks. I agree. The privacy claim is contradicted by Support's "may include the email addresses along the chain". I note though that I got the opposite answer from Support. Did you request escalation?