In brief: Mailer can mean a tool or service for preparing and sending email. Before choosing one, distinguish the editor, contact database, automation, and actual message delivery.
How I use Mailer in practice
I connect a mailer to the customer’s specific situation. Content, timing, and the next step should change according to what a person did and can reasonably expect from the company. I first run the automation manually on a test contact, including the error branch and unsubscribe.
What to watch out for
A database is not unlimited property. Unclear consent, old contacts, missing authentication, and pressure to increase frequency are problems. More messages may briefly raise revenue while damaging deliverability and trust, which recover slowly.
Questions for decisions
- Why should the recipient receive this message now?
- Do we have a documented purpose and correct consent type?
- How will we verify delivery, response, and business benefit?
- What happens on an error, unsubscribe, or data change?