T-mailer

T-mailer helps you to use ActionMailer with different providers' API. It sends emails using raw/rfc822 message type. Which means it converts the mail object to string and sends it completely. There is no any intermediate changes, so what you send is what you get. It supports more APIs (see below) and you can decide which one would like to use. It allows you to send different emails with different APIs. It can help to move between providers, load balacing or cost management.

• Amazon AWS SES
• SparkPost

Add this line to your application's Gemfile:

gem "t-mailer"

And then execute:

$ bundle

Or install it yourself as:

$ gem install t-mailer

The T-mailer gem is needed other gem(s) to install, depends on which API would like to use.

Gemfile:

gem "aws-sdk-ses"

Or

$ gem install aws-sdk-ses

Gemfile:

gem "simple_spark"

Or

$ gem install simple_spark

First, add the required gems to your Gemfile and run the bundle command to install it.

After that, set the delivery method in config/environments/production.rb.

config.action_mailer.delivery_method = :t_mailer

By default, the gem will look for your API keys in your environment:

AWS_ACCESS_KEY_ID
AWS_DEFAULT_REGION
AWS_SECRET_ACCESS_KEY

SPARKPOST_API_KEY

If you have above keys you don't need to configure anything else. If above environment variables are not exist or if you would like to override these settings you can identifying a different key in the initializer config/initializers/t-mailer.rb:

T::Mailer.configure do |config|
  config.aws_access_key_id     = "aws access key id"
  config.aws_default_region    = "aws default region"
  config.aws_secret_access_key = "aws secret access key"
  config.sparkpost_api_key     = "sparkpost api key"
end

When calling the deliver! method on the mail object T-mailer returns with a modified mail object with the message ID which returned from the API.

message = MyMailer.message(data).deliver!
message.message_id # => 123456789

delivery_system is a specific and required option for T-mailer that the delivery method knows which API should use.

To use AWS SES the delivery_system should be ses.

Also you can add more AWS SES specific options like tag: "test" (required) and configuration_set_name: "testname".

mail(from: "from@example.com", to: "to@example.com", delivery_system: "ses", tag: "test", configuration_set_name: "testname")

To use SparkPost the delivery_system should be sparkpost.

Also you can add more SparkPost specific options like tag: "test", options: { open_tracking: true, click_tracking: false, transactional: true } and metadata: { website: "testwebsite" }.

mail(from: "from@example.com", to: "to@example.com", delivery_system: "sparkpost", tag: "test", options: { open_tracking: true, click_tracking: false, transactional: true }, metadata: { website: "testwebsite" })

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/100Starlings/t-mailer. Please use the issue tracker if you found any issues. If you would like to contribute to this project, please fork this repository and create a new pull request.

The gem is available as open source under the terms of the MIT License.