Top-tier outbound MTAs

SmartRelay uses our dedicated high-performance message transfer agent (MTA) subsystem, which is based on top-tier components, such as the Momentum on-premise MTA from Message Systems.

The same infrastructure hosts the dedicated inbound SMTP listener, which receives messages from your local SMTP forwarder for further processing. See SmartRelay overview and using a local SMTP forwarder for more details.

The email streams of each Contactlab customer are entirely independent of those of any other customer, ensuring that your reputation and assigned resources remain only yours.

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Automatic bounce management

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