An idx file extension is related to the Microsoft Outlook Express and used for its mailbox index files.
IDX file extension - Microsoft Outlook Express mailbox index
What is idx file? How to open idx files?
The idx file extension is associated with Microsoft Outlook Express, an e-mail and news client included in earlier releases of Microsoft Internet Explorer.
The latest edition of Outlook Express is called Microsoft Mail Live.
The idx files are used for indexing of mail messages.
This idx file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
The default software associated to open idx file:
Company or developer:
Microsoft Corporation
Microsoft Outlook Express is an e-mail client distributed with Internet Explorer from version 4.0 to version 6.0. It is also pre-installed in several versions of Microsoft Windows, from Windows 98 to Windows XP.
Outlook Express is user-friendly and easy to use application, which supports standard POP, IMAP accounts, composing rich HTML e-mails, e-mail encryption, privacy protection, malware protection, e-mail sorting etc.
In Windows Vista is Outlook Express replaced with Windows Mail.
List of software applications associated to the .idx file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open idx file, edit idx file, convert idx file, view idx file, play idx file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting idx files.
Programs that can create idx file - Microsoft Outlook Express mailbox index
Programs supporting the exension idx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Microsoft Outlook Express for create idx file action.