LinkedIn is a business-oriented social networking service. Founded in December 2002 and launched on May 5, 2003, it is mainly used for professional networking. As of 2015, LinkedIn had more than 400 million members in over 200 countries and territories.
There are a few different types of LinkedIn email services. The first is the InMail service, which is a message that is sent directly to a LinkedIn user's inbox. The second is the Introductions service, which allows LinkedIn users to request an introduction to another LinkedIn user through a mutual connection. The third is the Connections service, which allows LinkedIn users to connect with other LinkedIn users who have similar interests.
While LinkedIn offers a number of features to its members, one of the most popular is the ability to send and receive messages through the LinkedIn Email Service. This service allows members to connect with one another without having to share their personal email address, and it is a great way to stay in touch with professional contacts.