Are there any free sources that can check an entire list of emails to see if they bounce or are bad?

I have an excel sheet with over 2000 names and emails. I know there are sites I can individually check emails, but are there any sites or free programs where I can import an excel list and do this?

2 Comments
 

Make a fake email account and send a mass email. The ones that bounce back don't work.

"You stop being an asshole when it sucks to be you." -IlliniProgrammer "Your grammar made me wish I'd been aborted." -happypantsmcgee
 

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