Basics of sending Gmail in Ruby

It's information about Ruby, but it's convenient when teaching Ruby, so a procedure memo

Get your Gmail app password

In short, I want the following 16 digits スクリーンショット 2021-01-10 9.03.09.png

The following work is done on the here screen.

  1. Enable Google two-step verification (otherwise you won't get your password!) -[Password and login method]-> [Two-step authentication process] --Authenticate with SMS and activate
  2. Get the app password -[Password and login method]-> [App password] -Enter [Select App] and [Select Device] respectively (anything that you can manage ... should be) --The app password will be generated, so make a note of it.

Install gem mail

$ gem mail install

Write sample code


require 'mail'

from   = '[email protected]'
password = '16_digit_app_password'
to = '[email protected]'

Mail.defaults do
  delivery_method :smtp, {
    address: '',
    port: 587,
    domain: '',
    user_name: from,
    password: password,
    authentication: :login,
    enable_starttls_auto: true

m = do
  from "#{from}"
  to "#{to}"
  subject "Great Mail Title"
  body "Fantastic body blar blar"

m.charset = "UTF-8"
m.content_transfer_encoding = "8bit"

It should work with this for the time being.

Reference information

Send email via Gmail using Ruby

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