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# nmh

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nmh (new message handler), is a powerful electronic mail handling system. Following the Unix Philosophy, nmh is made up by a collection of simple programs each of which has a single purpose. This architecture allows the user to intersperse nmh with other commands at the shell prompt and to write scripts tailored to their needs.

## Installing

Install nmhAUR or nmh-gitAUR from the AUR.

Optionally install a utility to handle IMAP or POP, for example fdm, offlineimap or getmail.

Also optionally install msmtp or another utility for sending mail.

## Configuring

nmh is extensively configurable in a variety of ways. The primary of these is the `~/.mh_profile` file.

The syntax for .mh_profile is unusual. For example, nmh will refuse to run if there are blank lines in the file. Read the mh_profile (5) man page for more.

By default, nmh uses `~/Mail` as your mail folder. To change this, set `Path`:

     Path: path/to/mail/folder

Note:

- Path can be either full (if prefixed with `/`) or relative to $HOME.
- Nmh uses the mh mail format, which is different from the maildir and mbox. Setting your Path to a preexisting maildir folder, for example, will not work.

Set inbox (relative to Path):

     Inbox: inbox

Also by default, nmh populates the mail folder with the `inc` command, which incorporates mail from the user's mail drop (`/var/mail/user`).

If you have a non-standard mail drop path, you can set an environment variable `$MAILDROP`, or set MailDrop in `mh_profile`:

     MailDrop: /path/to/mail-drop

or set inc:

     inc: -file /path/to/mail-drop

Note: For each nmh command (see list below) the user can set default flags with a line of the form `command: -flag` format in mh_profile. These work much like bash aliases.

Nmh is also capable of retrieving mail via POP. A basic POP setup (see inc (1) man page for more):

     inc: -host example.com -user username -sasl

## Usage

To become familiar with basic nmh usage, learn and practice the following commands:

Command | Description
--- | ---
inc | Incorporate new mail.
scan | Scan the contents of the current folder.
folder/folders | Change the current folder or list folders and their contents.
show | Display messages.
comp | Compose a new message.
repl | Reply to a message.
refile | Move a message to another folder.

## Frontends

While nmh is fully usable from the command-line, several console-based and graphical user interfaces exist. Also, some common mail tools interact smoothly with the mh format.

### MH-specific Frontends

- MH-V, a console interface to mh/nmh with vi- keybindings.
- MH-E, a console interface to mh/nmh with Emacs keybindings.
- exmh, a TK-based mh GUI.

### MH-compatible Frontends

- Popular MUA mutt understands mh format. (Use `set mbox_type = mh` in your muttrc.)
- Full-text mail indexer and search utility mairix can read and write in mh format. (Use `mh=path/to/mh/folder` and `mformat=mh` in .mairixrc)

## See also

- Nmh official site
- Nmh project page on savannah
- Nmh-workers mailing list
- 'MH & nmh: Email for Users & Programmers' (book)

Category:

- Email clients