Google introduced a new multiple signatures option in Gmail. The feature has been rolling-out to G Suite for Edu domains over the last few weeks. It appeared in my school's domain last week and a colleague emailed me to ask what what does and why he should care about it.
Why you might create and use multiple signatures.
The multiple signatures option lets you create a signature that you use when sending an email to students and a different one to use when sending an email to colleagues. I created a signature that reads, "Mr. Byrne, Computer Science" when I'm emailing my students. The one that I use when emailing my colleagues, parents, or vendors reads "Richard Byrne, Computer Science." I did this just to create consistency with my students because they call me Mr. Byrne in class and online.
In the following video I demonstrate how to create and manage multiple signatures in Gmail.