What happens next?

How to interview a source via email
Send your source a letter of introduction and explanation about the purpose of your interview.
Include your contact information, which publication or company you're working with, deadline information and anything else that the source should know before agreeing to the interview. It's helpful to include an estimate of the amount of time your source will spend answering your questions.
Set a timeline for your source to answer and request confirmation. Reduce the number of questions from what you would normally ask during an in-person interview.