Decode letter pop3. how to find the encoding?

Question

PHP

Good evening. I receive a letter via pop3 from the mailer.
The letter arrives like this:

=D0=BF=D0=B0=D1=81==D1=81=D0=B0=D0=B6=D0=B8=D1=80=D0=B0

I recode from quoted-printable and get this
Ожидаемое вр�=�мя в пути:
Question. how to get normal? what other decoding needs to be done?

Answer 1

Encoding is specified in the email headers.