First go to the Mesquite ISD Portal
Log into Portal
Locate the Email icon and click it.
This should redirect you to your district email.
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Click the start button on the bottom left of your screen
You will see see office 365 on the top right of the popup.
Select Outlook.
When the outlook window pops up type in your school district email.
Then click "Connect"
On the next screen select "Outlook.com".
In the popup "Windows Security" box type in your password and click "OK".
Click "Done".
Outlook will open but another popup screen will appear.
Select "Sign in".
Type in your school district email and click "Next".
Sign in with your school district credentials once more and click "Sign in".
Click "OK".
Click "Done".
And on the last popup click "Close".