Action Mailer in Rails 4

Step 1
Create the Mailer called “UserMailer” with the action “sendMail” using following command:

$ rails generate mailer UserMailer sendMail

Step 2
Modify the “sendMail” action according to your requirement. Below is the example content of the/app/mailers/user_mailer.rb:

class UserMailer < ActionMailer::Base
default from: “”
def sendMail(email)
@greeting = “Hi”

mail to: email, subject: “Your Subject”

Step 3
You may modify the text content of the message at /app/views/user_mailer/sendMail.text.erb. You may also create the HTML version of the message by creating /app/views/user_mailer/sendMail.html.erb file and add the required html content. Below is the example content of the text message:

<%= @greeting %>, This is a text message.

Step 4
Configure the SMTP settings in the development.rb or production.rb or test.rb configuration file according to your requirement. These files are located at /config/environments/ folder.

config.action_mailer.raise_delivery_errors = false
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
address: “”,
port: 2525,
# 8025, 587 and 25 can also be used.

domain: “”,
authentication: “plain”,
enable_starttls_auto: true,
user_name: “USERNAME”,
password: “PASSWORD”

Step 5
You may test the settings by running the following command from rails console.

In this way you have to follow the steps to setup action mailer in rails application


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