certified mail

14 LETTERS · STARTS WITH C

certified mail is a valid 14-letter word worth 21 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3E1R1T1I1F4I1E1D2M3A1I1L1

3 + 1 + 1 + 1 + 1 + 4 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does certified mail mean?