FORTUNE -- This week, LinkedIn (LNKD) announced a new feature for enhancing users' current mobile email experience called LinkedIn Intro. Available today for iOS devices, LinkedIn Intro is the result of the professional social network's acquisition of the contact management service Rapportive in February 2012.
"What's the No. 1 activity on mobile? It's email, and the growth of mobile email is simply staggering," explained Rapportive founder Rahul Vohra at LinkedIn's Mobile Day event, held in San Francisco. Four years ago, less than 4% of emails were read on mobile. Currently, that percentage is over 50%. Vohra argues the ability to integrate a LinkedIn user's profile information directly into email.
Here's how it works: iOS users with Gmail, Yahoo (YHOO), Aol (AOL), Google (GOOG) Apps, and Apple (AAPL) iCloud e-mail accounts can download LinkedIn Intro, and a pane appears in their current Apple Mail app. If an email recipient is also on LinkedIn, their information pops up within the app, including photo, current position, previous experience, and education among other data.
For some mobile users, the benefits are obvious. People who are networking and/or seeking a new job can dash off better-informed emails more quickly. "With that smaller screen size, the expectation is that users are going to find content much faster," LinkedIn CEO Jeff Weiner put simply.
Also at the event, LinkedIn executives disclosed more data about mobile usage. Two-and-a-half years ago, just 8% of members visited the network via mobile; now 38% of LinkedIn's 238 million users do so. Indeed, Weiner said he expects more than half of users to access LinkedIn in some regions next year.
Fortune's curated selection of tech stories from the last 24 hours. Sign up to get the round-up delivered to you each and every day.
* Four board members are leaving Yahoo, including chairman Roy Bostock and HP exec Vyomesh Joshi. As All Things D reports, the Internet company will add three new board members, though their identities are not yet known. (All Things D)
* Amazon upped the content available in its Prime Instant Video MOREJP Mangalindan, Writer - Feb 8, 2012 10:13 AM ET
|Why casino workers hate Obamacare|
|Five predictions for the World Wide Web that were way, way, way off|
|Men's Wearhouse to buy Jos. A. Bank for $1.8 billion|
|Netflix faster on Comcast, following deal|
|Big Gay Ice Cream's business secrets|