Hello MailWizzes! We will soon launch soon a new Enterprise Plan with unlimited checks at TheChecker to meet a growing customer demand and we would love to get your feedback about that. This Enterprise Plan would consist of a dedicated cloud verification infrastructure and more: Use through any interface (web, widget or APIs - Single, Bulk File, and Bulk JSON); It also works with MailWizz's integration. Priority support; Unlimited monthly checks, with automated calibration of up to ~ 5k validations per domain (@gmail.com, @hotmail.com, @yahoo.com, etc.) per hour. If you want to perform a larger number of concurrent checks, just add a new verification thread for the same monthly setup + fee. Do you think it makes sense to you? What's your feedback about that? If you wanna contact us directly, just shoot a message to firstname.lastname@example.org . Thanks!