"Initial greeting" refers to the first interaction or welcome message exchanged between two people when they meet or communicate for the first time. Full definition
Ensured customers were satisfied with every part of the flooring experience, from initial greeting through order completion. (monster.com)
We sift through thousands of people, ghostwrite initial greetings, and curate weekly shortlists of prospects who are interested in you. (amillionmatches.com)
When you first meet the hiring manager, be sure to shake hands as you exchange initial greetings. (mashable.com)