How To Write A Letter To A Networking Contact . Write a compelling subject line. When you email a new professional contact, you should know more than the essential details like their name, company and job title. FREE 8+ Networking Email Examples & Samples in PDF Examples from www.examples.com Here are some examples of subject lines not to use: The purpose of a networking letter is to introduce yourself, seek advice, request a meeting, or seek an introduction to another professional in the field. You had a brief conversation, exchanged business cards, connected on linkedin—and haven’t been in touch since.