After trying Clearout, I almost never see any bounces or failed deliveries and our open rate is as high as 82% sometimes because the quality of our list is good now. The "guaranteed deliverables" feature gives us a lot of confidence in Clearout as a product.
We as a lead generation agency were looking for a provider that could help us clean emails at scale. Clearout has proven to be an excellent resource to help us with that journey. Increasing our deliverability by 23%, it’s now part of our ‘go-to’ tool stack for outreach campaigns.
It works amazingly well at validating email addresses with great API and support. It was able to identify about 10% of the invalid contacts in our database. There are other products for email verification but Clearout by far has the best price and easiest to use.