Salutation for a mass email

HIALL

Think of how you might greet a group of friends in a quick message—this two-word phrase does the same for a crowd, often seen in newsletters.

This clue plays on the idea of a greeting used when addressing a large group via email. "Salutation" hints at a greeting like "hi," while "mass email" suggests it’s directed at many people—hence "all." Combine them, and you get "HIALL," a casual but efficient way to start a message to a whole list.