Ruby on Rails Email automatic sending function setting (using gmail)

Things to do

Get a password for two-step verification with your Google account


You will need to get a Google account. I turned on the two-step authentication of the gmail account and set it after obtaining the dedicated authentication password.

① Open a browser with the Google account used for sending, open the tab on the upper right and open the account.

(2) Select [Security] from the menu on the left side of the screen to open the security setting screen.

③ Select [2-step authentication process] in [Login to Google] and set according to the screen. [Try it] ⇨ [Password] ⇨ [Continue] ⇨ [Confirmation contact will be sent to your mobile phone] ⇨ [Register backup method] ⇨ [Enter the code you received on your mobile phone] ⇨ [Enable] 3.png

④ Return to the screen and [App Password] will be displayed in [Login to Google]. Set according to the screen. 4.png

⑤ A password will be issued (16 characters) We will use this password to authenticate your email account.

Rails config file editing

Email sending settings are defined in the configuration file for each environment under config / environment.

[Folder structure]  config   ∟environments ∟development.rb ・ ・ ・ Development environment ∟product.rb ・ ・ ・ Production environment

Rails.application.configure do
  config.action_mailer.raise_delivery_errors = true  #Change from false to true
  config.action_mailer.delivery_method = :smtp 
  config.action_mailer.smtp_settings = {
    address: '',
    domain: '',
    port: 587,
    authentication: 'login',
    enable_starttls_auto: true

Setting environment variables

$ sudo EDITOR=vim rails credentials:edit

Add the following to the environment variables.

  user_name: [email protected] 
  #Enter the address of the Google account you registered earlier
  password: aaaabbbbccccdddd
  #Enter the issued password (16 characters)

next time

We will implement it in Ruby on Rails. Implementation of automatic sending function of Ruby on Rails mail

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