(computing) A software product that uses a file (or database) of names and addresses, together with a template document, to produce multiple copies of a letter, each personally addressed to a different recipient.

Alternative form of mail merge

To carry out such a process.

(rail transport) A train used by the postal service to transport mail, and in some cases, to sort mail en route.

The delivery point where Mail Services delivers and collects mail.

Alternative spelling of voicemail

(retronym) Mail sent physically in the post, especially as compared to email.

Any mail or letters that are not welcome or solicited and typically sent in bulk; especially mail of a commercial nature such as advertising circulars and form letters.

Mail sent to a public figure by their fans.

(US) A category of mail in the US Postal Service including registered, numbered, insured, and certified mail.