For starters, Prophet is not new any longer but has gained much-deserved popularity since it was introduced and is absolutely worth using.
In the past few months, I’ve noticed a myriad of other tools, all of which will try to find an email address, starting from a social profile or, in some cases, from the persons’ and company names. It’s up to everyone to test the tools – and I’d recommend using more than one in tough cases.
Email Hunter offered by https://emailhunter.co collects visible professional email addresses everywhere – and is therefore in an excellent position to try and guess an address; it will tell us about the level of confidence in guessing. (Note, it’s a different tool from another Chrome Extension also called “email hunter” that collects addresses on the current page.) I have heard good things about it.
Charlie – I have not tried it long enough to share the email quality experience, but it also provides “social summaries” on profiles. Finding emails is its new feature.
The above two extensions nicely give each other screen space, and it looks like this when viewing a LinkedIn profile (Hmm… I wonder what LinkedIn thinks about that.)
LeadIQ is a nicely designed tool, oriented toward salespeople, but very much applicable to sourcing and recruiting. It not only looks for emails but also saves tables with data from the viewed profiles in Google Docs. Check it out (25 free emails).
Datanyze Insider – similar to LeadIQ (with 10 free emails) it and also collects the data in a spreadsheet; this could be quite convenient for sourcing for those who don’t like working with data scrapers.
ContextScout – mentioning it here since I have seen some online discussions about it. However, I have not been impressed by their UI or by the quality of information in my tests – at least not so far. Additionally, it only provides a limited-time trial.
Well, there are others worth mentioning, but I think I’ll stop here for now. (An easy way to find more similar tools is to Google a few tool names.)