Rails ActionMailer with Multiple SMTP Servers

Rails ActionMailer with Multiple SMTP Servers #

have a need to use two different smtp servers in a Rails application. It appears that the way ActionMailer is constructed, it is not possible to have different smtp_settings for a subclass. I could reload the smtp settings for each mailer class whenever a message is being sent, but that messes up the ExceptionNotifier plugin which is outside my control (unless I mess with it too). Does anyone have a solution/plugin for something like this?

Ideally I would like to have

class UserMailer < ActionMailer::Base; end
and then set in environment.rb

ActionMailer::Base.smtp_settings = standard_smtp_settings
UserMailer.smtp_settings = user_smtp_settings
Thus, most of my mailers including ExceptionNotifier would pickup the default settings, but the UserMailer would use a paid relay service.

Here is Some Solutions :

Solution 1: #

class UserMailer < ActionMailer::Base
def welcome_email(user, company)
@user = user
@url = user_url(@user)
delivery_options = { user_name: company.smtp_user,
password: company.smtp_password,
address: company.smtp_host }
mail(to: @user.email,
subject: “Please see the Terms and Conditions attached”,
delivery_method_options: delivery_options)
end
end

Solution 2: #

class MailerWithCustomSmtp < ActionMailer::Base
SMTP_SETTINGS = {
:address => “smtp.gmail.com”,
:port => 587,
:authentication => :plain,
:user_name => “custom_account@transfs.com”,
:password => ‘password’,
}

def awesome_email(bidder, options={})
with_custom_smtp_settings do
subject ‘Awesome Email D00D!’
recipients ‘someone@test.com’
from ‘custom_reply_to@transfs.com’
body ‘Hope this works…’
end
end

# Override the deliver! method so that we can reset our custom smtp server settings
def deliver!(mail = @mail)
out = super
reset_smtp_settings if @_temp_smtp_settings
out
end

private

def with_custom_smtp_settings(&block)
@_temp_smtp_settings = @@smtp_settings
@@smtp_settings = SMTP_SETTINGS
yield
end

def reset_smtp_settings
@@smtp_settings = @_temp_smtp_settings
@_temp_smtp_settings = nil
end
end

Solution 3: #

# app/models/user_mailer.rb
class UserMailer < ActionMailer::Base
def self.smtp_settings
USER_MAILER_SMTP_SETTINGS
end

def spam(user)
recipients user.mail
from ‘spam@example.com’
subject ‘Enlarge whatever!’
body :user => user
content_type ‘text/html’
end
end

# config/environment.rb
ActionMailer::Base.smtp_settings = standard_smtp_settings
USER_MAILER_SMTP_SETTINGS = user_smtp_settings

# From console or whatever…
UserMailer.deliver_spam(user)

Solution 4: #

class CustomMailer < ActionMailer::Base

before_deliver do |mail|
self.smtp_settings = custom_settings
end

after_deliver do |mail|
self.smtp_settings = default_settings
end

def some_message
subject “blah”
recipients “blah@blah.com”
from “ruby.ninja@ninjaness.com”
body “You can haz Ninja rb skillz!”
attachment some_doc
end

end