How to send a mail to a person here? I really don't know where can I find information about it. It can help to solve my problem Prove the polynomial ring and algebra of quaternions isomorphisms.

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    $\begingroup$ You can only send mail to users here if they give out their e-mail address, e.g. by putting it in their profile. Without having done anything to verify it, I'm guessing that is extremely rare. $\endgroup$ Dec 11, 2017 at 16:41
  • $\begingroup$ Hi please ask this in meta instead. $\endgroup$ Dec 11, 2017 at 16:43
  • $\begingroup$ Thanks for answer! $\endgroup$
    – KonGoSha
    Dec 11, 2017 at 16:47
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    $\begingroup$ Don't. Unsolicited e-mail is one of the best ways of annoying someone who you think could help you. Only send e-mail if the recipient approves of it. $\endgroup$ Dec 11, 2017 at 17:19

1 Answer 1


I have received one email from math.SE (it is not hard to find my email). It was someone demanding to know why I voted to close a question. I did not respond. I would respond to most emails, given that the emails are written in good faith and worth my time.

To answer your question of "how to send mail" - the answer is that if someone has their email on their profile (or it is easily findable) and your email is written in good faith and not a waste of their time, then you may send an email. In all other cases don't. There is no private messaging feature (other than maybe creating a chat) for a reason.

This is a question and answer site, not a discussion forum. Rarely should you have a need to email someone and even more rarely is it worth their time.

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    $\begingroup$ I would say that if someone doesn't put their email (or a link to their website) on their profile, chances are they don't want emails related to Math.SE, even if their email is easily found. $\endgroup$ Dec 12, 2017 at 19:03
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    $\begingroup$ @Jyrki Lahtonen IMO these comments should be summarized and put on a page for new users. $\endgroup$ Dec 13, 2017 at 6:35

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