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.DISPOSITION-NOTIFICATION·File Extension

DISPOSITION-NOTIFICATION Other — A .disposition-notification file is a DISPOSITION-NOTIFICATION Other. It is a file format typically read and written by specialized applications.

Othermessage/disposition-notification

Quick facts

Extension.disposition-notification

File typeDISPOSITION-NOTIFICATION Other

MIME typemessage/disposition-notification

CategoryOther

Charset—

Compressible—

What is .disposition-notification

What is a .disposition-notification file?

A .disposition-notification file is a DISPOSITION-NOTIFICATION Other. It is a file format typically read and written by specialized applications.

In the mime-db registry it maps to message/disposition-notification. When serving .disposition-notification over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to message/disposition-notification — and is delivered over HTTP via the Content-Type header.

How to open .disposition-notification files

Use VS Code or xxd to open and edit .disposition-notification files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

Content-Type: message/disposition-notification

Common software that reads/writes .disposition-notification:

VS Codexxd7-Zip

Relation chain

.disposition-notificationextension of

format

DISPOSITION-NOTIFICATION Otherserved as

mime type

message/disposition-notificationsent via header

http header

Related extensions

Related MIME types

message/disposition-notification

.disposition-notification

Common uses

Application-specific data

How to edit .disposition-notification files

Open the file with VS Code, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .disposition-notification files

Create a new file and save it with the .disposition-notification extension, or export this format from VS Code.

Frequently asked questions

What programs can open .disposition-notification files?

Common options include VS Code, xxd, 7-Zip. You can also open many of these files with built-in viewers or a browser.

How do I create a .disposition-notification file?

Create a new file in any text editor or the app that owns the format and save it with the .disposition-notification extension.

What is the relationship between .disposition-notification and the message/disposition-notification MIME type?

message/disposition-notification is the media type identifier used for .disposition-notification files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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