sendgrid/sendgrid-csharp — pull request #77 by lukasz-lysik (2014-06-23 08:56:39+00:00)
Title: Sink host introduced

I've spent quite some time trying to find "test" send mode for SendGrid. I've implemented "SendToSink" flag which some may find very useful. When it is set to true, the message is sent to *user*\_at\_*host*@sink.sendgrid.net, instead of user@host.

Reference: https://github.com/sendgrid/docs/issues/83