I like how easy it was for me to set up my account. It's very user friendly! There are many options available when you want to customize things or send test messages. You can even use their free version if you're just trying them out. They offer several different plans depending upon what type of plan works best for you business needs. So far they've been great so no complaints here. We have had success using XEVMailverify because of its quick setup time & ease of integration into existing systems/apps (Salesforce). I like the fact that it has all the options you would need for a good email verification service. It's easy to use, easy to configure and it works really well! There are some minor issues that can be improved upon, but nothing major. If you want an email verification tool that will get the job done then this is the one for you. We were able to verify hundreds of thousands of new accounts without any problems.