Awesome contact 1, meet awesome contact 2.
OK, introducing two of your favorite contacts takes a little more skill than that.
First, make sure both parties are OK with the intro being made. (Here's a simple way to check).
If so? Use this email template to introduce them quickly and easily. Your work is done!
Template How to Introduce Two People Over Email
Hi [Name 1],
Thanks so much for agreeing to talk to [Name 2] about [context: e.g., her job search, what it’s like to be in your field]. I’ve copied him/her on this email so you can connect directly for [a short call / coffee meeting / drinks].
[Name 2], as I mentioned, [Name 1] is [most flattering one-line description of your contact you can think of while still being truthful: e.g., “is the best sales person I know” or “is a true expert in the industry, and should be very useful”].
I’ll let you two take it from here.
If someone asks you to make an introduction you aren’t comfortable with, give yourself permission to say no. You don’t have to do every favor that’s asked of you. If a junior peer comes asking you to intro her to every senior exec you know—be polite, but don’t feel bad turning her down.
With that said, when you are comfortable, keep in mind that introducing two people is a great way to grow your network. You’ll be seen as someone who doesn’t simply send and accept connection requests, but a person who takes the time to add value for those you’re connected with.