A daily updated filename extension database!

QM4 file extension

The table below provides useful information about the .qm4 file extension. It answers questions such as:

  • What is the .qm4 file?
  • What program do I need to open a .qm4 file?
  • How can the .qm4 file be opened, edited or printed?
  • How can I convert .qm4 files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Qmail Options Data

QM4 file is a Qmail Options Data. Qmail is a mail transfer agent (MTA) that runs on Unix.
QM4 format description not yet available
Application: Qmail
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
QM4 aliases:
QM4 related links:
QM4 related extensions:

Other types of files may also use the .qm4 file extension.

🚫 The .qm4 file extension is often given incorrectly!

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

m4, mq4, q4, qm, qme, qmr, qmt

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

M4 Macro File
Intuit Quicken v4 Memory List File
MetaQuotes Language 4 Source Code
NEC PC-98 XLD4 Image
Qt Compiled Translation Source
Quicken Win v3 Data
OzWin Quickscan History Data

🔴 Can't open a .qm4 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .qm4 file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .qm4 file extension, write to us!

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