1)   MailCrawl 1.14
Regardless if you need targeted or untargeted emails, MailCrawl is what you should use. It detects every single email on a site, not only those in mailto tags. Duplicates and invalid emails are instantly removed.

 2)   ProCrawl 1.32
ProCrawl high speed email extractor will search mail servers for emails. This is the ultimate way to find emails since they are verified as they are collected.

 3)   WebExtract 2.30
WebExtract is a very fast email extractor designed to find both targeted and untargeted email addresses from websites. It can find emails from specific areas of interest or countries of your choice.

 4)   1st Email Spider 1.1
Regardless if you need targeted email addresses, 1st Email Spider is what you should use. It detects every single email on a site, not only those in mailto tags. Duplicates and invalid emails are instantly removed, try 1st Email Spider for free.