massemail

noun
UK /ˌmæsˈiːmeɪl/
US /ˌmæsˈiːmeɪl/

A mass email is one email sent to lots of people at the same time.

The school sent a mass email to tell every parent about the snow day.


OTHER MEANINGS

2. To send the same email to many people at once.

They mass-emailed the invitation to the whole club.

3. Email sent to a large list, often advertising or announcements.

I deleted the mass email about the sale without reading it.

4. A single message copied to many recipients rather than written to one person.

Her thank-you note felt like a mass email instead of a personal letter.