Synonyms for Surface mail:

• n.

  •communication (noun)
  • surface mail.
  •snail mail (noun)
  • usnail,
  • usps mail,
  • general delivery.

• Other synonyms:

  •
  • cash on delivery,
  • COD,
  • airmail,
  • first class,
  • certified mail,
  • express.
  •Other relevant words:
  • mailing list,
  • correspondence,
  • frank,
  • parcel post,
  • special delivery,
  • post,
  • letter.

Antonyms for Surface mail:

• n.

  • communication
    air mail.

Hyponym for Surface mail:

• n.

  • communication
    mail.