mailbox rule
(US, legal) An exception to the general rule of contract law stating that acceptance of an offer takes effect when a letter enters the postal system.
Definitions
(US, legal) An exception to the general rule of contract law stating that acceptance of an offer takes effect when a letter enters the postal system.
“1) Expand SCOTUS by 4, and fill. 2) Lift House Seat cap, set 500k, curreny least pop state, as apportionment base w 250k interval reset. 3) End gerrymandering 4) Set min polling locations & hours, max ID reqs & codify mailbox rule. 5) Impose ranked choice.”
— Bluesky· May 2026
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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Related terms
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Semantically related
- mailbox66%
(chiefly, US) A box into which mail is placed.
- mailbox61%
(computing) A folder or account for the storage of email; an electronic inbox or mailstore.
- letterbox60%
(chiefly, UK, Irish, Commonwealth) A box into which mail is put.
- mail cover59%
(US) An investigative technique in which the United States Postal Service, acting at the request of a law enforcement agency, records information from the outside of letters and parcels before they are delivered and sends that information to the requesting agency.
- mails59%
(usually, with "the", US) The mail delivery system.