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kumomta/docs/reference/headermap/message_id.md
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2025-10-07 07:38:10 +01:00

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message_id

local message_id = headers:message_id()

{{since('2025.10.06-5ec871ab')}}

Parses the Message-Id header, and if present, returns the id string. Returns nil if Message-Id is not present.