8 entries under expression topic. ×

6
letter box(noun, idiom, box, letterbox)
2
mail box
1
pillar box(noun, idiom, letterbox, postbox)
1
mail drop(noun, idiom, postbox)
1
post box
1
post office box(noun, idiom)
0
call box
0
electronic mailbox
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APASmart Define. (2015). mailbox thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mailbox/thesaurus/synonyms
ChicagoSmart Define. 2015. "mailbox thesaurus" https://smartdefine.org/mailbox/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mailbox thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mailbox/thesaurus/synonyms>.
MLASmart Define. "mailbox thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mailbox/thesaurus/synonyms>