They got a lot of 'hate mail' [=extremely angry letters, e-mail, etc.] from people who disagree with their policies.
Have you 'mailed' (out) the invitations yet? [=('chiefly Brit') have you posted the invitations yet?]
She 'mailed' me a copy of her manuscript. = She 'mailed' a copy of her manuscript to me.
(..) (men laughing) Hey, you're gonna miss the fun. - Did you see what happened ? - No. Apparently, it hit over there. lt's flooded eight feet and the mail hold is worse. - Can you shore up ? - Not unless the pumps get ahead. - Have you seen the mail-hold damage ? - No, she's already underwater. (..)1997 Titanic