snail mail
US /ˈsneɪl meɪl/
UK /ˈsneɪl meɪl/

1.
pos biasa, pos siput
the regular postal service, as opposed to email or other electronic communication
:
•
I sent the documents via snail mail, so they might take a few days to arrive.
Saya menghantar dokumen melalui pos biasa, jadi mungkin mengambil masa beberapa hari untuk sampai.
•
Even in the age of email, some people still prefer to send invitations by snail mail.
Walaupun dalam era e-mel, sesetengah orang masih lebih suka menghantar jemputan melalui pos biasa.