- Extension
- .ost
- .ott
- Format
- Binary
- Binary
- Category
- Email
- Document
- Developer
- Microsft
- Apache Software Foundation
- Description
- n OST file is a data file created by Microsoft Outlook (2005 or later), an email client and personal information manager. It is used to store a copy of mailbox information from an Office 365, Exchange, or Outlook.com account. OST files may contain email messages, contacts, tasks, calendar data, and other account information.
- n OTT file is a document template saved in OASIS' OpenDocument standard format and created by word processors included in the OpenOffice and LibreOffice suites. It contains the page layout and default styles for a text document. OTT files are used for authoring .ODT documents that have the same appearance and formatting.
- MIME Type
- application/x-ms-offline-storage
- application/vnd.oasis.opendocument.text
