of Postmark
Source: Webster's dictionaryAlameda County ballots must be postmarked by Election Day but will continue to be counted for 17 days. Source: Internet
Affected postcards that were successfully sent through the Ottoman Empire before this date (and are postmarked accordingly) have a high rarity value and are considered valuable by collectors. Source: Internet
… All of these stamps are often found "canceled to order", meaning they are postmarked without ever having passed through the postal system. Source: Internet
All mailed-in ballots will be postmarked, but voters should deposit the envelope containing their ballot in a mailbox before the scheduled collection time to ensure prompt delivery. Source: Internet
Another 1,454 ballots from voters citywide weren’t counted because they were postmarked or scanned in after the deadline for the election that saw Joe Biden elected over President Donald Trump and also saw Illinois voters reject a progressive income tax. Source: Internet
But 21 states and DC (317 electoral votes) accept mailed ballots postmarked by November 3 from one day to two weeks after Election Day. Source: Internet