Challenge: LinkedIn needed to alert members of LinkedIn’s Premium solutions and increase its number of subscribers.
Action: LinkedIn used its InMail product to promote their Premium Solutions by targeting certain audiences who already used different LinkedIn features, such as Business Plus and Job Seeker.
Result: LinkedIn reached out to over 2 million prospects every week, causing a 75% increase in open rates and 800% expansion in conversion rates when using InMail versus using traditional emails. [i]
Check out more tips like this in Erik Qualman’s book, How to Sell on LinkedIn. 
[i] LinkedIn. “LinkedIn on LinkedIn: How We Build Our Base of LinkedIn Premium Subscribers,” LinkedIn Marketing Solutions, 2015, accessed May 24, 2016, https://business.linkedin.com/content/dam/business/marketing-solutions/ global/en_US/site/pdf/cs/linkedin-lol-case-study.pdf
