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Asked: 2026-05-11T09:28:58+00:00

I’m using my Gmail Apps for Domain account to send email within my rails

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I’m using my Gmail Apps for Domain account to send email within my rails application for standard automated emails (user signup, forgot password, notify admin of new comment, etc), but I’m worried about the 500 emails per day limit set by Google.

Google suggests one way to overcome the limit is to use multiple user accounts.

So, I’ve setup 10 additional gmail user accounts (noreply1, noreply2, noreply3, etc) – I’d like to track when any of these accounts has sent 500 emails in a 24 hour period and use the idle account accordingly.

How do I dynamically set the :user_name value in ActionMailer::Base.smtp_settings?

Here’s my current setup – NOTE: this sends from ‘noreply1’ every time, even though i’m explicitly setting :user_name and :from to ‘noreply2’:

--- development.rb ---      ActionMailer::Base.delivery_method = :smtp     ActionMailer::Base.smtp_settings = {         :address => 'smtp.gmail.com',         :port => '587',         :domain => 'mydomain.com',            :authentication => :plain,             :user_name => 'noreply1@mydomain.com',         :password => 'password'     }  --- account.rb --- (MODEL, called via a callback) after_create :send_welcome_email ... def send_welcome_email   #ActionMailer::Base.smtp_settings[:user_name] = 'noreply2@mydomain.com'   ActionMailer::Base.smtp_settings.merge!({:user_name => 'noreply2@mydomain.com'})     SubscriptionNotifier.deliver_welcome(self)    end  --- subscription_notifier.rb --- (MODEL)  class SubscriptionNotifier < ActionMailer::Base   def welcome(account)         @sent_on = Time.now     @subject = 'Welcome to the App'     @recipients = account.email     @from = 'noreply2@mydomain.com'      @body = { :account => account }   end end
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1 Answer

  1. You could also set up an MTA on your server and use that for sending the mail.

    That’s what we do.

    You have to add your server’s IP as a valid one for sending email in your domain’s SPF record to avoid getting marked as spam.

    Another benefit of this is that if you do this, you can set the From: address of the email to be one of your users, which you cannot do with GMail.

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