Before you can send anything, Results AI Mailer needs a way to hand your emails to a mail server. This is set up on the Sending tab.
The twelve built in options:
- WordPress wp_mail, which uses whatever your site already has configured
- Custom SMTP, for any SMTP server you control
- Amazon SES
- SendGrid
- Mailgun
- Postmark
- Resend
- SparkPost
- Mailjet
- Brevo
- Elastic Email
- SMTP2GO
Which one should you pick?
For most people sending real volume, Amazon SES is the cheapest reliable option. Postmark has an excellent reputation if deliverability matters more than cost. WordPress wp_mail is fine for very low volume or for testing, but shared hosting mail is rarely good enough for a real list.
Adding a provider:
- Go to AI Mailer, then Sending
- Choose your provider from the list
- Fill in the credentials that provider asks for, such as an API key or SMTP host, port, username and password
- Save, then use the test send button to prove it works
The test send goes to one address of your choosing and tells you immediately whether the credentials are right.
Failover and daily caps:
You can configure more than one provider and give each a priority. If your first choice fails or hits its daily limit, the engine automatically tries the next one. Each provider can carry a daily cap so you never blow through an allowance by accident.
If a send fails, the queue retries it with a growing delay, up to three attempts, before marking it failed.