Q: How does this compare to another email verification tool being sold on AppSumo with the name Email List Validation?
Plus how does it compare that is list on AppSumo with the name Email validation (Murlist) that claims that they have a 99% accuracy? What accuracy does your service have?

Verified purchaser
Hi,
we have almost 99% deliverability of the emails that are verified by XEmailverify and it has been tested as well.
We internally have non-rbl listed IPs and a dual filtering mechanism to give you the highest accuracy. Generally in other tools, you will find a lot of emails unverifiable just because of anti-spam agents or filters.
Please let us know if there is anything worth improving or developing additional features that will make your life easier. We always listen to our clients and value our cooperation.
Sincerely Yours,
XEmailverify

Verified purchaser
Hi,
we have almost 99% deliverability of the emails that are verified by XEmailverify and it has been tested as well.
We internally have non-rbl listed IPs and a dual filtering mechanism to give you the highest accuracy. Generally in other tools, you will find a lot of emails unverifiable just because of anti-spam agents or filters.
Please let us know if there is anything worth improving or developing additional features that will make your life easier. We always listen to our clients and value our cooperation.
Sincerely Yours,
XEmailverify