The pieces in place.
A SENDING PLATFORM
Not your hosting mailbox. Shared hosting has hourly sending limits, no unsubscribe handling, no bounce processing and no reporting.
A dedicated service handles all of that.
A DOMAIN YOU CONTROL
Send from an address on your own domain. A campaign from a Gmail address looks improvised and authenticates poorly.
AUTHENTICATION RECORDS
SPF, DKIM and ideally DMARC, configured for your sending platform.
Without them your mail lands in spam regardless of content.
SOMETHING TO SAY
The part people skip. A platform and a list with nothing worth sending produces nothing.
A WAY TO COLLECT ADDRESSES
A form on your site, a prompt at checkout, or asking in person.
A PRIVACY NOTICE
Saying what you collect and what you do with it. Required, and expected.
WHAT YOU DO NOT NEED
An elaborate template Automation from day one A large list
Start with a plain message to the people you have.