Which MIME types are related to file extension ".imw"?

The .imw file extension is associated with 1 MIME types:

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

About .imw Files

IMW files are compressed sound files used by IncrediMail to store MIDI music. They use the MIME type application/vnd.ms-cab-compressed, which means the file is bundled inside a Microsoft Cabinet archive.
This design allows the email client to deliver built‑in sound notifications and effects in a compact format.

Sound Notifications: IncrediMail uses these files to play audio alerts for new messages.
Email Sound Effects: They often hold MIDI sound clips that add character to emails.
Internal Audio Storage: The files serve as containers for sound data within the IncrediMail application.

Files like these can sometimes be extracted using CAB archive utilities such as 7‑Zip if you need to access the raw MIDI data. Standard media players may require conversion or additional plugins to play the content correctly.
Based on information from FilExt.com, IMW files remain a niche format tied to IncrediMail’s multimedia experience.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

application/vnd.ms-cab-compressed

FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.