Instructions apply to iOS 13 through iOS 8.
Tap the email account you want to change the prefs for.
ChooseNo Limitto synchronize all mail.
You don’t need to sync every email if you want tosearch for old messages on your iPhone.
Your mail is synchronized to your preferences.
TapSync account, then tap thethree dotsand selectSync now.
In Outlook, go toSettings>View All OutlookSettings.
SelectYesin thePOP and IMAPsection.
Then selectDon’t allow, then selectSave.
