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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
```lua
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.