Any email list will decay at a rate of around 22.5% each year1. Regular maintenance is needed to avoid high bounce rates while keeping conversion rates healthy.
There’s no minimum list size for email verification to be worthwhile. Even smaller lists may need verifying if the emails are collected through web forms or third-party sources.
If you see a high bounce rate, poor deliverability, or your emails are being marked as spam, email verification is essential.
If you receive a warning from your provider (for example, Mailchimp, Amazon SES or Mailrelay), you’ll need to take action to avoid negative consequences.
You can try verifying emails to see how it works with our free verifier.