Rails ActionMailer with multiple SMTP servers

Question

I 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_settin

Answer 1

When I wanted a quick test in the console (Rails 5) I did the following:

settings = { username: "" } # etc
mailer = MyMailer.some_method
mailer.delivery_method.settings.merge!(settings)
mailer.deliver