What do the Outlook icons mean?

Outlook holds a lot of icons to indicate different item types and other item properties. Below you’ll find a long list of these icons and their meaning.


E-mail

icon Unread Message
message-icon Unread Signed Message
message-icon Unread Encrypted Message
message-icon Read Message
message-icon Read Signed Message
message-icon Read Encrypted Message
message-icon Draft
message-icon Sending Message
message-icon Forwarded Message
message-icon Forwarded Signed Message
message-icon Forwarded Encrypted Message
message-icon Replied on Message
message-icon Replied on Signed Message
message-icon Replied on Encrypted Message
message-icon Out Of Office Message
message-icon Message Recall Request
message-icon Message Recall Failure Report
message-icon Message Recall Successful Report
message-icon Multimedia Message (can I get a repro?)
message-icon Delivery Report
message-icon Non Delivery Report
message-icon Message Deleted Without Being Read Notice
message-icon Message Read Notice
message-icon Secure Receipt
message-icon Post
message-icon Replied on Post
message-icon Message Holds (Receipts) Tracking Tab (Outlook 2003 and previous)
message-icon Message Holds (Receipts) Tracking Tab (Outlook 2007 and Outlook 2010)

Meeting Messages

meeting-icon Meeting Request
meeting-icon Accepted Meeting Request
meeting-icon Cancelled Meeting Request
meeting-icon Can I get a repro?
meeting-icon Declined Meeting Request
meeting-icon Tentative Meeting Request

Calendar

calendar-icon Recurring Item
calendar-icon Exception to Recurring Item
calendar-icon Data Conflict
calendar-icon Start Time of an Appointment or Meeting
calendar-icon End Time of an Appointment or Meeting
calendar-icon All Day Event
calendar-icon Scheduled Meeting
calendar-icon Private Item
calendar-icon A Reminder is Associated with this Item
calendar-icon A Meeting Workspace is Associated with this Item
calendar-icon A File Attachment is Associated with this Item
calendar-icon More Items

Contacts

contact-icon Contact
contact-icon Contact with Journaling enabled
contact-icon Distribution List (Outlook 2003 and previous)
contact-icon Distribution List / Contact Group (Outlook 2007 and Outlook 2010)

Tasks

task-icon Task
task-icon Delegated Task
task-icon Received Task
task-icon Recurring Task
task-icon Accepted Task
task-icon Declined Task
task-icon Task Request

Journal

For an overview of journal items click here.

Folders

icon Main mailbox store (holds the Outlook Today screen)
icon Extra data store such as pst-file, mailbox, Public Folders, SharePoint etc…
icon Inbox
icon Drafts
icon Sent Items
icon Deleted Items
icon Junk E-mail
icon Outbox
icon Folder
icon Shared folder in your mailbox
folder with blue arrows on top Shared folder you are connected to and thus not in your own mailbox (more info)
icon Search Folder
icon Inactive Search Folder (click on it to activate)
icon Conflicts folder in Sync Issues
icon Failures folder in Sync Issues
icon RSS Feeds
icon Calendar
icon Contacts
icon Tasks
icon Notes
icon Journal

General

icon High Importance
icon Low Importance
icon Attachment
icon Unresolved
icon 1 Off; something is screwed up
icon Sticky Note

Security (icon shown in Message)

security-icon Invalid Signature
security-icon Encrypted
security-icon Valid Signature
security-icon Unknown Signature
security-icon Signature Warning

Flags (Outlook 2003)

flag-icon No Follow Up Flag
flag-icon Red Follow Up Flag
flag-icon Blue Follow Up Flag
flag-icon Yellow Follow Up Flag
flag-icon Green Follow Up Flag
flag-icon Orange Follow Up Flag
flag-icon Purple Follow Up Flag
flag-icon Follow Up Completed

Non-Native (added via custom forms or add-ins)

icon Appointment created via the Live Search Maps Add-In for Outlook
icon Archived message via an Exchange level archiving solution
icon Spam message indicated via a 3rd party anti-spam solution