- Extension
- .ost
- .docx
- Format
- Binary
- Binary
- Category
- Email
- Document
- Developer
- Microsft
- Microsoft
- 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.
- A DOCX file is a document created by Microsoft Word or another word processing program, such as OpenOffice Writer or Apple Pages. It contains formatted text but may also include images, drawn objects, and other document elements. DOCX files are widely used in home, academic, and business environments for drafting letters, resumes, invitations, newsletters, and other documents.
- MIME Type
- application/x-ms-offline-storage
- application/vnd.openxmlformats-officedocument.wordprocessingml.document