Chose BriteVerify
I've used a few in the past that weren't on the list to be mentioned in addition to NeverBounce. FreshAddress is a tool I use the 2nd most after BriteVerify. I have evaluated Webbula to and they have a unique offering.
Invited by TrustRadius (TR) on Vendor's Behalf
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. TR verified that a representative sample of customers was invited. More Info