InMail messages are private messages that allow you to contact anyone from search, up to your 3rd degree connections on LinkedIn, without any contact information. An InMail can be sent directly from a member's profile page or from search results in LinkedIn Recruiter Lite. InMail credits in Recruiter Lite start at 30 per month per user, with the option to purchase up to 70.
Check out some of the frequently asked questions about InMail: