CNM file format description

Many people share .cnm files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cnm file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cnm files.

3 filename extension(s) found in our database.

.cnm - Pegasus Mail New Message

The CNM data files are related to Pegasus Mail. The CNM file is a Pegasus Mail New Message. Pegasus Mail is a donationware (previously freeware) e-mail client.

Pegasus Mail
Data files
- / -
Pegasus Mail New Message related extensions:
DexDrive Game Card Image
IN-HEH Timeline Database
First Publisher ART Data
HotDocs Template Library
Nintendo DS Palette Data
Tekla Structures NC File

.cnm - NoteMap Outline Data

The CNM data files are related to NoteMap. The CNM file is a NoteMap Outline Data. NoteMap is a basic outlining program.

Data files
- / -
NoteMap Outline Data related extensions:
Ashampoo Photo Commander Thumbnail Cache List
VirtualDub Jobs Data
CYMFLOW Network Data
Connected Components Workbench Data
TI-83/84 Plus Complex Variable Data
FlashFXP XML Data

.cnm - Kerio WinRoute Firewall Mail Data

The CNM data files are related to Kerio WinRoute Firewall. The CNM file is a Kerio WinRoute Firewall Mail Data. Kerio WinRoute Firewall is a network security software package for Microsoft Windows.

Kerio WinRoute Firewall
Data files
- / -
Kerio WinRoute Firewall Mail Data related extensions:
e-Surveiller Compressed Log
4D Database Saved Variable Data
SQLite Rollback Journal Data
Autodesk AutoCAD Block Template
Mac OS X Kernel Panic Data
Charles Session Data

Naturally, other applications may also use the .cnm file extension. Even harmful programs can create .cnm files. Be especially cautious with .cnm files coming from an unknown source!

Can't open a .cnm file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cnm file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cbm, cgm, chm, cm, cmm, cmn, cn, cnj, cnk, cnn, dnm, fnm, ncm, nm, snm

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Pool of Radiance Game Data
Microsoft SMS Collection Membership Update
Nokia Configuration Message
Color FBM Image
Visual Studio Windows CE Build Settings
ChessBase Multimedia Baggage Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you have useful information about the .cnm file format, then write to us! >> CNM file