How to easily find out the email address of the user who clicked the "Spam" button using the Yandex feedbak loop?

Question

Yandex

Hello.
There is a small question on the use of FBL.
Mail.ru in the abuse report sends a copy of the letter that was complained about and this copy contains the email of the complainant, i.e. this person can easily be excluded from the mailing list and no longer be disturbed.
Yandex also sends notifications, but instead of a copy of the message, an empty letter + in the headers of this letter, the recipient's address is overwritten, but the message id is saved.
Those. it is assumed that I need to find the recipient in the mail server logs by message id? Maybe I'm missing some simpler way?

Answer 1

As far as I know, there is no easier way - Yandex specifically depersonalizes data "to protect the privacy of our users." The way out is to encode the recipient's address in the message id and write a decoder parser that will work on your side when a complaint is received.
Some mailing services already do this.