Using multiple SMTP accounts with Rails & ActionMailer

By Eric Berry
March 30, 2009 | Comments: 6

Recently I ran into a problem where I needed to be able to send emails via two different SMTP accounts within the same Rails application. I scoured the net trying to find a method to do this, but I couldn't find one. So I pulled out my hack-hat and got started.

If there are any better ways to do this, I would love to hear about it.

I first created a new YAML file in my config folder called action_mailer.yml. In this file, I specified three different nodes with the actionmailer settings.

Afterwards, I created two mailer models that represent each of the different mailers I will use.



So now when I send an email, I can first determine which mailer to use and then send the email.

For example, your controller might have code that looks like this:

I realize this is probably the hard way, but hey, it's a start. Please post any plugins or alternatives to doing this if you know of any.

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What would you do if one needs to send emails from multiple accounts (more than 2) ? Creating n models is not very scalable.

I completely agree. I am still trying to find a solution to that problem. In fact, I am now in need of sending emails from 7 different mail accounts within the same Rails application. Does anyone else have ideas on how to make this work? If I come up with something, I'll post a follow-up.


class TestMailer

def load_settings(site)
options = YAML.load_file("#{RAILS_ROOT}/config/test.yml")[RAILS_ENV][site]
@@smtp_settings = {
:address => options["address"],
:port => options["port"],
:domain => options["domain"],
:authentication => options["authentication"],
:user_name => options["user_name"],
:password => options["password"]
@template = site

def welcome_email(recipient, site, sent_at =
@subject = "Thank you for visiting #{site}"
@recipients = RAILS_ENV == "production" ? recipient : ""
@from = ''
@sent_on = sent_at

This is exactly what i was searching, thanks for the code.



You can use database to store multiple SMTP configuration. Then dynamically load settings.

i think this will suffice your need.


What happens when two emails for different sites need to be delivered at the same time, since the smtp settings are process wide class variables?

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