Definitions

1. noun

a person or thing that sends mail or messages, especially by a postal service or email.

“The mailer arrived at the office at 10 am to collect the packages.”

2. noun

a person or device that sends messages or data through a computer network or the internet.

“The email client is a type of mailer used for sending and receiving emails.”

3. noun

a person or company that specializes in sending promotional materials by mail.

“The direct mailer sent out thousands of brochures to potential customers.”

4. verb

to send mail or messages, especially by a postal service or email.

“The company will mailer out the new catalog next week.”