3
snail mail
2
airmail
2
airpost
13 years ago|27 views|share |citing 
APASmart Define. (2013). mail service thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/mail_service/thesaurus/narrower
ChicagoSmart Define. 2013. "mail service thesaurus" https://smartdefine.org/mail_service/thesaurus/narrower (accessed September 23, 2026).
HarvardSmart Define 2013, mail service thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/mail_service/thesaurus/narrower>.
MLASmart Define. "mail service thesaurus" 18 May 2013. Web. 23 September 2026. <https://smartdefine.org/mail_service/thesaurus/narrower>