Error "An SMTP To address is required to send a message" on Learn-Rails Tutorial

Question

I keep getting error on "Send Mail" section on the Learn Ruby on Rails tutorial.

I have tried to clone https://github.com/RailsApps/learn-rails.git on my local machine but the issue is still here.

Below is my code:

user_mailer.rb

class UserMailer < ApplicationMailer
  default from: "do-not-reply@example.com"

  def contact_email(contact)
    @contact = contact
    mail(to: Rails.application.secrets.owner_email, from: @contact.email, :subject => "Website Contact")
  end
end

development.rb

config.action_mailer.smtp_settings = {
    address: "smtp.gmail.com",
    port: 587,
    domain: Rails.application.secrets.domain_name,
    authentication: "plain",
    enable_starttls_auto: true,
    user_name: Rails.application.secrets.email_provider_username,
    password: Rails.application.secrets.email_provider_password
  }
  # ActionMailer Config
  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.raise_delivery_errors = true
  # Send email in development mode?
  config.action_mailer.perform_deliveries = true

secrets.yml

development:
  email_provider_username: <%= ENV["GMAIL_USERNAME"] %>
  email_provider_password: <%= ENV["GMAIL_PASSWORD"] %>
  mailchimp_api_key: <%= ENV["MAILCHIMP_API_KEY"] %>
  mailchimp_list_id: <%= ENV["MAILCHIMP_LIST_ID"] %>
  domain_name: example.com
  owner_email: <%= ENV["OWNER_EMAIL"] %>

I have also made sure that the environment variables were set up correctly on .bashrc file.

Any help will be greatly appreciated, and thank you in advance!

Try hardcoding your Gmail credentials into the secrets.yml file. Don't check it into git, just see if there is any issue with ENV variables. — Daniel Kehoe, Aug 08 '15 at 02:37
Hi Daniel, I have tried hardcoding my Gmail credentials into secrets.yml, or user.mailer.rb file, the issue is still here. — Florence Liang, Aug 08 '15 at 05:49
http://stackoverflow.com/questions/11754979/sending-emails-on-heroku-using-external-smtp/11756507#11756507 — amtest, Aug 09 '15 at 07:01

score 0 · Answer 1 · answered Aug 08 '15 at 03:37

0

For development, you can use the letter opener gem. Once you send an email it'll automatically open in your default browser.

Add the following to the development section of your Gemfile.

gem 'letter_opener'

answered Aug 08 '15 at 03:37

zach

319
1
11

Thanks zach! I tried it, but the same error is still here. – Florence Liang Aug 08 '15 at 05:54
Did you bundle install after? – zach Aug 08 '15 at 16:29

score 0 · Answer 2 · answered Aug 09 '15 at 03:28

0

I too was having the identical issue. I tried everything from disabling 2-step verification (Google) to hardcoding my credentials in the secrets.yml with zero success.

I used my outlook.com credentials and it worked perfectly.

Note: this requires a change in development.rb

config.action_mailer.smtp_settings = {       
    address : "smtp.live.com"
    # everything else is identical.
}

answered Aug 09 '15 at 03:28

Matt D.

1

I think Google changed the Gmail API recently? – Florence Liang Aug 09 '15 at 07:25

score 0 · Answer 3 · answered Sep 26 '15 at 21:45

Setting it for gmail

ActionMailer::Base.delivery_method = :smtp
    ActionMailer::Base.smtp_settings = {
      :address => "smtp.gmail.com",
      :domain => "gmail.com",
      :port => 587, 
      :user_name => "username",
      :password => "password",
      :authentication => :plain,
      :enable_starttls_auto => true,
      :openssl_verify_mode => 'none' 
    }

make it true config.action_mailer.raise_delivery_errors = true it will tell if any error occurs.

Also try port 25

Error "An SMTP To address is required to send a message" on Learn-Rails Tutorial

3 Answers3