Testing email functionality in Drupal is a common use case every developer encounters frequently. Setup a full-featured email system locally or using a 3rd party service for just testing emails may not be feasible always. Mailhog is the best solution available for this scenario and the bonus point is that it works perfectly with Lando.
We had a query from one of our customers to help them migrate their local mail server to Google Apps. They wanted to do this because they did not have the sufficient in-house capability nor have the funds to get paid external capability to support an internal mail server. One hurdle that they were facing was that they had around 40GB of mail left on the local mail server that they wanted to migrate to the new mail accounts they created on Google Apps.