ACCEPTED250 received
Content secured before confirmation
Delivery observability
Know what happened.
Recover what did not.
Every accepted message leaves a readable trail. When a destination delays, rejects, or cannot receive mail, MailerZ keeps the evidence and the message for the plan retention period.
LIVE DELIVERY FLOWMailerZ
ATTEMPTDestination response
Exact SMTP outcome recorded
OUTCOMEDelivered, held, or failed
Clear next action instead of guessing
Operational evidence
Turn “the email is missing” into a solvable event.
Delivery history connects protocol responses to plain-language states, so support and domain owners can act quickly.
Accepted means stored
MailerZ confirms receipt only after required content and delivery metadata have been secured.
Every hop recorded
Follow the message from inbound acceptance through routing, rewriting, destination selection, and final response.
Real SMTP responses
See whether the destination accepted, deferred, throttled, or rejected the forwarding attempt.
Retry visibility
Temporary destination failures remain distinguishable from permanent rejection and successful delivery.
Recovery window
Message content is retained for 14 days on Free and 90 days on paid plans, subject to policy and account status.
Actionable failure reasons
Identify invalid destinations, DNS conflicts, authentication problems, quota issues, or provider rejection.
A clear product boundary
Delivery history helps; it is not an archive.
The recovery store exists to diagnose and recover forwarding failures. Your destination inbox remains the system of record for received mail.
Stop operating email in the dark.
Connect a domain and see the complete delivery path from the first test message.