Knowledge base
(custom properties)criticalWritten by the Hubmessage propertyProperties MailerQ does not recognise are carried through untouched and returned in the result.envelopecriticalWritten by the Hubmessage propertyThe return address used in MAIL FROM — where bounces and delivery notifications arrive, and what receivers check against SPF.ipscriticalWritten by the Hubmessage propertyA list of sending addresses this message is allowed to use, overriding the node's own arrangement.mimecriticalWritten by the Hubmessage propertyThe full message as a MIME string — or, as an object, a specification for Mimify to build one from.recipientcriticalWritten by the Hubmessage propertyThe address the message is delivered to — the only strictly required property.tagscriticalWritten by the Hubmessage propertyFree-form labels that follow a message into statistics, logs, results and every interception mechanism.dkimimportantmessage propertySigning keys carried by the message itself — domain, selector, key and all the signing parameters — instead of being taken from the cluster database.maxattemptsimportantWritten by the Hubmessage propertyHow many attempts this message may consume, overriding the node's limit of a hundred.maxdelivertimeimportantWritten by the Hubmessage propertyThe moment after which this message is abandoned, set from the node's default at acceptance and overridable per message.poolimportantWritten by the Hubmessage propertyThe name of an address pool the message should be sent from.queuesimportantWritten by the Hubmessage propertyResult queue names for this message alone, overriding the node's success and failure.datamessage propertyValues substituted into {$name} placeholders in the subject, the addresses and the body — and the switch that turns substitution on at all.keepmimeWritten by the Hubmessage propertyWhether the full message is included in the result object published after delivery.nextattemptWritten by the Hubmessage propertyDelays the first attempt until a given time.prioritymessage propertyPriority within the sending queue — ignored unless the queue was declared with priority support.retriesWritten by the Hubmessage propertyIntervals between attempts for this message, replacing the node's list.securityWritten by the Hubmessage propertyHow hard to insist on encryption for this message: optional, opportunistic, required or verified.dsnmessage propertyWhich events produce a notification for this message, how much of it is returned, and the identifiers to quote.forcemessage propertyProceed with delivery even when conversion or validation produced errors.headersmessage propertyInstructions to remove, prepend, append, replace or update headers of the message.inlinecssmessage propertyConverts stylesheet rules into inline style attributes before sending.keymessage propertyIdentifier of a body held in the external message store, used instead of an inline mime.smarthostmessage propertyHands this message to a named server instead of the recipient's own.