.SKINDEX File Extension

Mail Index File

Developer Apple
Popularity
3.0  |  5 Votes
 

What is an SKINDEX file?

A SKINDEX file is an index file used by older versions of Apple Mail, such as Mac OS X Tiger (10.4), to facilitate faster searching within email databases. It contains indexing data, enabling the application to quickly locate and retrieve email messages. SKINDEX files are typically generated and maintained automatically by the Mail application as users manage their email.

More Information

Older versions of Mail typically stored SKINDEX files in the ~/​Library/​Mail/​ location. The files usually accompany a related file, mbox.SKindex.isValid, which helps ensure the data's integrity. These files serve users who rely on efficient email searching capabilities within Mac OS X Mail.

How to open an SKINDEX file

SKINDEX files are not meant to be opened. Instead, older versions of Apple Mail, such as Mac OS X Tiger (10.4), referenced SKINDEX files to assist search functionality. Modern versions of Apple Mail no longer use SKINDEX files.

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Programs that open or reference SKINDEX files

Mac
Included with OS

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