Windows 10: How do I migrate my Windows 11 Mail App contacts to Outlook 365?

To say that I find the Windows Mail app a little over-simplified would be an understatement, so I have started using Outlook 365.I have set up my email accounts in 365, and the email and calendar side of things is working perfectly. Unfortunately none of my contacts have been imported. How do I go about doing this?I have 1 x Gmail account, 2 x Yahoo accounts, and a business account hosted by Ionos, with hundreds of contacts between them. It will be totally impractical to re-enter them or transfer them 1 at a time.Is there a way of exporting my contacts from Windows Mail across to Outlook 365?T

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Only suggest people in my contact list, outlook windows 10 app

FYI:

 

Migrate suggested contact (semi-automatic) Windows Live Mail To Outlook

I'm afraid that Windows Live Mail doesn't have the same sort of addressee suggestions that some other programs like Office Outlook have. When addressing a message in Windows Live Mail, the only 'suggestions' that appear are entries in the contacts list that
match the string typed in the address box. Outlook also maintains a list of 'people you have sent mail to in the past who may or may not be in your contacts list,' its
AutoComplete list. Windows Live Mail doesn't do that.

I'm sorry, but it's not quite clear to me what your customer is expecting.

 

Only suggest people in my contact list, outlook windows 10 app

Look, the MAIL app of Windows 10 is not Outlook and is not a browser.

There is no easy way to delete suggested contacts in the Windows 10 Mail app.

But at Outlook.com in a browser you can start typing addresses in the To: field of a new message and then click X on unwanted suggestions which will then no longer appear.