Search using Google.
If you're using Rapportive for the first time, this will help you get to grips with it.
1) Download Rapportive
3) Once Rapportive is added to Gmail, guess different combinations using examples like the ones listed below:
Combinations you can try
Look for the Email id on there website
you can always look under Contact or Our team and look for Email
Search their email using their website domain
To conform copy the email address and match the ID with LinkedIn Profile using Rapportive
Look for Email using Person's Twitter Handle name
Copy their Twitter handle and search it in Rapportive.
[email protected] ([email protected])
You should also use free email domain names like:
gmail.com, yahoo.com, hotmail.com, aol.com
While you search for Contact's email using Free Domain like gmail.com
look for Contacts G+ Profile and Sometimes you can find Email