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Deliverability Guarantee

Email deliverability is a critical metric for the success of your email campaigns. We guarantee deliverability while using our service.

Email deliverability is a critical metric for the success of your email campaigns, and for your mailing reputation as a whole. DeBounce uses industry best practices to ensure the most accurate verification results. We back up our results with a 97.5% (or better) deliverability rate guarantee:
  • 96%+ accuracy rates on AOL, Yahoo, and office 365 email accounts.
  • 98%+ accuracy rates on everything else.
  • Note:If your list contains old Yahoo and AOL emails, please contact support prior to validating your emails so that our experts can advise you of the best methods to manage your lists.
  • Note:Since DeBounce uses special methods for validating GMX and WEB.de domains, you may get more bounces (>=95%).

Service Commitment and Exclusions


To be considered eligible for the deliverability guarantee, your mailing practices must match the following criteria:

  • Batch of at least 1,000 email addresses, verified with DeBounce, and sent within a 48-hour period.
  • Email addresses must be classified as Deliverable and Safe to Send.
  • Bounces must be the result of an invalid (non-existing) email address. Unqualified bounces may include (but are not limited to) poor sender reputation, mail server misconfiguration / unavailability, etc.
  • Bounces due to spam content, blacklisted IPs, technical issues, invalid mail configuration, throttling, etc. do not qualify for the guarantee.
  • The list must be an opt-in list that you have collected; it must not have been purchased from a 3rd party.

How the Guarantee works

If you believe we have not lived up to our guarantee, please open a feedback form within 30 days of the discrepancy. Qualified paying customers can receive additional verification credits as below:
If the accuracy rates are below the aforementioned thresholds, we will add 5 times the amount for every 1%. Let's say you have a 97% accuracy rate, which is 1% below the guaranteed threshold of 98%+ accuracy rates on everything else. We will add 5 x 1% (or 5%) of your total validation credits for those emails to your account balance. If your accuracy rate is 2% below the guaranteed threshold, our credits refund will be 10% of your list size. If it's 4% below, the credit refund will be 20%, and so on.

If you experience more than 8% bounces, we will refund all of your money.