Send email from Rails over SMTP

Set Action Mailer's SMTP settings to route your Rails app's mail through Unitpost. Same job as Nodemailer — different stack.

1. 1

   Configure Action Mailer

   In your environment config (e.g. config/environments/production.rb), set the delivery method and SMTP settings.

   Ruby

   config.action_mailer.delivery_method = :smtp
   config.action_mailer.smtp_settings = {
     address:              "smtp.unitpost.com",
     port:                 587,
     user_name:            "unitpost",
     password:             ENV["UNITPOST_API_KEY"],
     authentication:       :plain,
     enable_starttls_auto: true,
   }

2. 2

   Set your sender

   Use a from address on a verified domain in your mailer.

   Ruby

   class UserMailer < ApplicationMailer
     default from: "you@yourdomain.com"
   
     def welcome_email
       mail(to: "customer@example.com", subject: "Welcome!")
     end
   end

3. 3

   Deliver and verify

   Trigger the mailer (UserMailer.welcome_email.deliver_now) and confirm the send in your Unitpost Activity view.