This topic is for the [Verifying Mailers with Test Doubles] exercise in the [Test Doubles] trail. Post any questions, corrections, or pointers you have to share with other Upcase subscribers.
[Verifying Mailers with Test Doubles]: https://exercises.upcase.com/exercises/verifying-mailers-with-test-doubles
[Test Doubles]: Test Doubles | RSpec Stub Online Tutorial by thoughtbot