MAILS is a playable word

mail Scrabble® Dictionary

verb
mailed, mailing, mails
to send by a governmental postal system
(adjective) mailable
41 Playable Words can be made from "MAILS"
   2-Letter Words (10 found)
   3-Letter Words (14 found)
   4-Letter Words (14 found)
   5-Letter Words (3 found)