Looking for example of using Notifications SendGrid profile

I have a custom mvc widget that I would like to send an email out by utilizing the SendGrid profile we have configured in the backend settings for Sitefinity.

I am unclear as to if I can tap into the Notifications piece that Sitefinity has just to send out a simple email or if I need to install the SendGrid library via NuGet and then setup my credentials again in code.

I am not looking to use campaigns in any way.  I just want to send an email message without having to re-invent the wheel with configurations that may already exists in Sitefinity.

Any examples would be welcome.