Windows Mobile 6.5 Supported Email Attachment Formats

Windows Mobile 6.5 included native support for downloading and viewing a wide range of common email attachments through its integrated messaging client and pre-installed suite of applications. By leveraging built-in tools such as Office Mobile, Windows Media Player Mobile, and Pictures & Videos, users could open standard productivity documents, media files, and contact cards directly without needing third-party utilities.

Microsoft Office and Text Documents

Windows Mobile 6.5 shipped with the Office Mobile suite, which allowed users to open, view, and edit standard Microsoft Office formats directly from an email. Supported document formats included:

  • Microsoft Word: .doc, .docx, .dot, .dotx
  • Microsoft Excel: .xls, .xlsx, .xlt, .xltx
  • Microsoft PowerPoint: .ppt, .pptx, .pps, .ppsx (viewing only)
  • Microsoft OneNote: .one
  • Plain and Rich Text: .txt, .rtf
  • Web Pages: .htm, .html

Many device manufacturers also pre-installed Adobe Reader LE, enabling the direct opening of .pdf files.

Image and Graphic Formats

The built-in Pictures & Videos application handled direct downloading and viewing of most standard web and digital camera image attachments, including:

  • JPEG: .jpg, .jpeg
  • Bitmap: .bmp
  • PNG: .png
  • GIF: .gif (including static and basic animated files)

Audio and Video Media

Windows Media Player Mobile provided native playback capabilities for several streaming and local audio and video formats sent as attachments:

  • Audio: .wma, .mp3, .wav, .amr
  • Video: .wmv, .asf, .3gp, .3g2, .mp4 (codec dependent)

Personal Information and System Formats

Outlook Mobile directly processed contact, calendar, and compressed files to integrate data directly into the operating system:

  • Contacts: .vcf (vCard files could be opened directly to save contacts into the address book)
  • Calendar: .vcs and .ics (vCalendar and iCalendar files could be added directly to the local calendar)
  • Compressed Archives: .zip (supported for extraction and viewing directly through File Explorer on most standard ROM configurations)