---
name: "mthread"
section: "1"
platform: "linux"
package: "mblaze"
version: "1.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/mthread"
---

# mthread(1)

arrange messages into discussions

## NAME

**mthread** – arrange messages into discussions

## SYNOPSIS

**mthread** \[**-vpr**\] \[**-S** *msg*\] \[*msgs ...*\]

## DESCRIPTION

**mthread** groups messages together in parent/child relationships, based on which messages are replies to which others.( See [mmsg(7)](/mmsg/7.md) for the message argument syntax.)

If no messages are specified, **mthread** will read filenames from the standard input, or use the default sequence if used interactively.

**mthread** prints the threaded messages separated by newlines and indented according to their depth in the message tree. Unresolved Message-IDs are printed as-is.

The options are as follows:

- **-v**

  Do not prune unresolved Message-IDs at the top-level.

- **-p**

  With **-S**, only add parents, not unrelated subthreads.

- **-r**

  Sort the top-level threads in reverse order (newest threads first).

- **-S** *msg*

  Treat *msg* as optional message(s) that will be added to threads only if they are referenced. Threads where all messages are optional are suppressed. You can use **-S** to add an outbox folder, for example, completing threads where your replies were missing.

## EXIT STATUS

The **mthread** utility exits 0 on success, and \>0 if an error occurs.

## SEE ALSO

[mmsg(7)](/mmsg/7.md)

*Message threading:* **https://www.jwz.org/doc/threading.html**

## AUTHORS

Leah Neukirchen ⟨*leah@vuxu.org*⟩

## LICENSE

**mthread** is in the public domain.

To the extent possible under law, the creator of this work has waived all copyright and related or neighboring rights to this work.

**http://creativecommons.org/publicdomain/zero/1.0/**