Send email via the MailGun REST API.
FluentEmail.Mailgun
Create a new instance of your sender and add it as the default Fluent Email sender.
var sender = new MailgunSender(
"sandboxcf5f41bbf2f84f15a386c60e253b5fe9.mailgun.org", // Mailgun Domain
"key-8d32c046d7f14ada8d5ba8253e3e30de" // Mailgun API Key
);
Email.DefaultSender = sender;
/*
You can optionally set the sender per instance like so:
email.Sender = new MailgunSender(...);
*/
Send the email in the usual Fluent Email way.
var email = Email
.From(fromEmail)
.To(toEmail)
.Subject(subject)
.Body(body);
var response = await email.SendAsync();
Don't forget you can use Razor templating using the FluentEmail.Razor package as well.
If you'd like to create your own sender for another service, check out the source code. All you need to do is implement the ISender interface :)