Green Check on Outlook

Question

Good day,

I´m having trouble activating the green check on my emails once I have completed any actions contained in them. This was a function i used on my outlook but does not seem to feature on my current outlook. I can mark them with a red flag, but when I click on it again the flag is just removed.

I´m using version 2603 (build 19822.20182) and i just updated today with the newest version.

Just to be clear i´m using the outlook classic app.

Thanks, for any help!!

Answer 1

Hi , Thank you for reaching out!

My name is Stefano and it’s my pleasure to assist you today.

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In Microsoft Outlook Classic, the green check mark represents the command “Mark Complete” for a flagged email.

If clicking the flag only removes the red flag instead of turning it into a green check, it might mean the “Mark Complete” action is not being triggered or the flag behavior is configured differently.

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I would suggest you check:

1. Mark the flagged email as complete manually

• Select the email.
• Go to Home → Follow Up.
• Click Mark Complete.

If the feature works correctly, the red flag becomes a green check mark.

Alternative quick method:

• Right-click the flag column > Mark Complete.

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2. Use the keyboard shortcut

Press:

CTRL + SHIFT + G

This opens the Flag dialog, where you can click Mark Complete.

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3. Check if the To-Do integration is active

In newer Outlook Classic builds (like 2603 / build 19822) the follow-up system integrates with Microsoft To Do.

If that integration changes behavior:

• The flag may only toggle on/off instead of switching to a green check.
• Completion may be handled through the To-Do pane.

Try:

• Open the To-Do bar (View > To-Do Bar > Tasks).
• Mark the flagged email completed there.

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4. Reset the Follow-Up settings

• Go to View tab.
• Click Reset View.

Then flag a test email and choose Mark Complete.

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Keep me posted.

Regrads,

Stefano