meɪl 
meɪl 
1 (especially North American English) to send something to somebody using the postal systemmail something (to somebody/something) Don't forget to mail that letter to your mother.mail somebody something Don't forget to mail your mother that letter.mail somebody/something The company intends to mail 50000 households in the area.2 (British English) to send a message to somebody by emailmail somebody Please mail us at the following email address.mail something (to somebody/something) The virus mails itself forward to everyone in your address book.mail somebody something Can you mail me that document you mentioned?Phrasal verbs
mail something 
out
to send out a large number of letters, etc. at the same timeThe brochures were mailed out last week.
Usage note: post / mailNounsIn British English the official system used for sending and delivering letters, parcels/packages, etc. is usually called the post. In North American English it is usually called the mail: I’ll put an application form in the post/mail for you today. ◇ Send your fee by post/mail to this address. Mail is sometimes used in British English in such expressions as the Royal Mail. Post occurs in North American English in such expressions as the US Postal Service.In British English post is also used to mean the letters, parcels/packages, etc. that are delivered to you. Mail is the usual word in North American English and is sometimes also used in British English: Was there any post/mail this morning? ◇ I sat down to open my post/mail.VerbsCompare: I’ll post the letter when I go out. (British English) and I’ll mail the letter when I go out. (North American English)CompoundsNote these words: postman (British English), mailman/mail carrier (both North American English); postbox (British English), mailbox (North American English) Some compounds are used in both British English and North American English: post office, postcard, mail order.