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EML EML (Document)

File extension .eml
Category Document File
Description EML was designed to store e-mail messages in the form of a plain text file. It is structured with a header and main body, the header consists of the email address of both the sender and recipient, the subject and time and date the email was sent. The main message area of the email is described as the body and can contain hyperlinks and file attachments.
Technical Details EML files were created to comply with the industry RFC 822 standard which is the standard format for Arpa Internet text messages first conceived in August 1982. EML files contain plain ASCII text for the headers and the main message body and may be exported for the purposes of archiving and storage.
Associated programs
  • Microsoft Outlook
  • Mozilla Thunderbird
  • Microsoft Windows Live Mail
  • IncrediMail
  • Apple Mail
Developed by Microsoft
MIME type
  • message/rfc822
Useful links

PST PST (Document)

File extension .pst
Category Document File
Description A Personal Storage Table (.pst) is a file that is used to store copies of messages, calendar events, and other items within Microsoft software such as Microsoft Exchange Client, Windows Messaging, and Microsoft Outlook. PST files are used for archiving email data offline that can be later loaded and viewed in various applications.
Technical Details PST file formats have two types which are based on the encoding. ANSI encoded PST files are generally older file formats, supported by Microsoft Outlook 2002 and earlier versions - these files have a maximum size limit of 2GB and do not support Unicode. The more modern file format is based on Unicode encoding and removes the file size limit and can reach a maximum size of 50GB.
Associated programs
  • Microsoft Outlook 365
  • Microsoft Exchange Server
  • Encryptomatic PSTViewer Pro
Developed by Microsoft
MIME type
  • application/
Useful links

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