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- The Tasks module
- Task-specific properties: Only the text of the task items can be read through OWA Light.
- Reminders
- HTML composing of messages: OWA Light users get only plain text textboxes with no editing or formatting options.
- Flags and Categories
- Monthly or weekly view in Calendar: OWA Light shows the daily view only.
- Free/Busy grid in Appointment/Meeting Scheduling Assistant: OWA Light users get only "Suggested Times".
- Spell Check
- Conversation View
- Account Quota information
- Recover Deleted Items
- Add/edit distribution lists
- Public Folder access
- S/MIME features
- Add/edit rules