This document provides tips to increase response rates for InMail messages on LinkedIn. It recommends using an eye-catching headline rather than a generic one, personalizing the message by paying a compliment based on the recipient's profile, and keeping the initial message short while offering an easy next step like a phone call to learn more rather than trying to "sell" the job immediately. Response rates of over 20% are typical for recruiters, and over 30% for companies with strong employer brands on LinkedIn. Personalizing the outreach and coming across as genuinely interested in the recipient's specific background and career goals will engage passive candidates who may be open to opportunities but not actively job searching.