Sending emails is a major requirement of many web apps. At a minimum, a web app will almost certainly want to send emails related to auth, e.g. account verification and password recovery.
Roadster provides some minimal configuration of email clients, either via plain SMTP with the lettre crate, or via Sendgrid with the sendgrid crate.
In either case, emails should generally be sent in a background process, e.g. via a Sidekiq worker.
In the future, we may provide some utilities to reduce the boilerplate required to send an email, e.g. by providing some
EmailWorker trait/struct that provides common functionality for all emails. This is not implemented yet, but it
is something we'd like to add in the future.
The following chapters cover the provided SMTP and Sendgrid integrations.