Email Validation & Sending Policy
To maintain high deliverability and protect sender reputation, the following thresholds apply:
Pre-Flight Validation
Email Validation — $0.03 per email.
20% – 30% invalid emails: A user warning will be triggered.
50% or higher invalid emails: An additional warning will be triggered.
Email validation is only charged once per unique address. Subsequent sends to the same recipient will not incur additional validation fees.
Why it's required?
Sending emails to "dead" or invalid addresses is the fastest way to get your account flagged as spam by providers like Gmail and Outlook. To ensure your messages actually reach your customers’ inboxes, we verify your contact list before your first send. This "Pre-Flight" check identifies undeliverable addresses before they can hurt your reputation.
Why there is a fee?
Verification requires an intensive, real-time handshake with global mail servers to confirm each address is active and safe. We pass this cost through at $0.03 per email validated to provide you with the highest level of accuracy and protection.
Per-Campaign Monitoring
2% – 3% failure/bounce rate: A user warning will be triggered.
Above 3% failure/bounce rate: The campaign will be automatically stopped.
Global / Account-Level Monitoring
5% or higher failure/bounce rate: All active campaigns will be stopped, and the MailStream plan will be canceled to protect sender reputation.
The account will be subject to manual review for reactivation. It may either be reopened or terminated.