Mailbox exists or not will be checked as part of validation so its confirm that email address exists and valid.
Mail delivery will also be guaranteed with 95% as no one can provide 100% guarantee. If someone do than its fake.
Q. What format do we send our data in?
A. We can only accept data in excel, either a CSV, TXT formatted list.
Q. What is spam trap and what’s the big deal ?
A. a Spam trap is a normal looking email, that WILL inbox & whose sole purpose is to trap you. These are created exclusively to cause trouble, if you hit one, you'll be blacklisted which will greatly mess up your sending performance & you’ll be blocked by most ISP’s, your emails will basically never be seen by anyone.
Q. What percentage of accuracy can you provide?
A. It's impossible to be 100% accurate as smtp codes from servers are not always accurate. But we are averaging around 95% so your list will be greatly improved and you’ll be able to mail with any White listed server after this gig.