Contact.

As part of our security and privacy measures here, kindly ensure that you include your telephone number in your email, as I will be sending an invite to you through Signal from my phone number.  

Signal will be the vector through which we will do any 15-minute "get-to-know-you" consult, along with any SMS-based communications.  

You are, of course, welcome to keep correspondence through our secure email thread if your phone cannot support Signal.

I look forward to speaking with you!