when i try add an email adress , i take "unable to verify account information"

meeR01,

It looks like you tagged an iPhone 6s and iOS 12 in your post. Is that the device and software you are currently using? If so, you'll want to update your iPhone to the latest iOS which is iOS 15 currently.

iOS 15 and iPadOS 15 are compatible with these devices

After backing up your device, you can follow the steps here: Update your iPhone, iPad, or iPod touch to update.

If this continues after updating, you may want to reach out to Apple Support for further assistance. Depending on your region, you may be able to reach them here: Get Support.

Have a good one!

Welcome to Apple Support Communities meeR01,

We'd be happy to help get your Outlook account signed in on your iPhone. Are you able to sign into your Outlook account in Safari through their website using the same credentials?

You'll want to follow the steps here: Set up an Outlook account in the iOS Mail app

Hope that helps!