{{ person.firstName }}, that allGood fills in for each recipient when the email sends. This page lists every one an email can use. For how they work and why, see Personalizing an email.
Write each field exactly as shown. Capitalization matters, and a misspelled field shows as blank with no warning.
The recipient: person
Every
person field can be empty. An empty field shows as blank. Add a fallback for any you use in a greeting or subject.
A few more exist for advanced use: person.name, person.id, person.shortId, and person.isTest.
The sender: sender
These come from your sending domain’s settings. See Set up an email domain.
This send: send
Your copy and other assets: asset
Print the current year
There’s no year field. Use thedate filter on the current time: