How to do outlook SMTP settings
                     Email Not Syncing
Get our simple steps and fix the issue email not 
syncing
Introduction:
Follow our step by steps guidance to fix the issue
First, you have to know the reason of this error
And the fix it
Update your email then checks the error
Checks The Update
First, check if there is any updates are available on 
your mail account
If it is available then update it
Then restart your problem
And then check the issue
Internet Connectivity
Check your internet connectivity
If you have a low speed Internet connection at your 
place, then the syncing process will take a longer 
time.
Airplane Mode:
Disable the Airplane Mode on your device if you 
have turned it on.
Navigate to Account Settings and check if the box 
near the Sync Gmail option is checked.
Check the space on your account
And removes the caches
Reference:
For your reference refer to the below link that will 
help you much better
https://email-setup-center.com/why-is-my-e
mail-not-syncing
Thank You