Windows 10: I don't remember email address i bound for Windows 10 Activation

I don't remember email address i bound for Windows 10 Activation and how do i find it?

:)

 

I don´t get any emails from the marketplace so can´t buy or reinstall apps

I don´t get any emails from the marketplace. The email address is working fine, I tried an alternate, didn´t work either. I don´t receive the email on my desktop nor on my Windows phone and it used to work fine. Can´t buy any app now!
According to my account I have installed the app many times, but there is no email to be found anywhere. Checked all trash folders etc to no avail. Both addresses I tried were Gmail addresses. The first one is my original Windows Live ID email address.
The phone (and my desktop) do receive other emails to these same accounts so apparently Windows Marketplace is not really sending them.
Problem continues for two days now.

 

Additional email addresses

You are talking about two totally different things, contacts versus predictive text input in mail client.

In most email clients, like Windows Mail, when you start typing an address in TO, CC or BCC fields, the client does not pick the addresses suggested from your contacts. Instead, it suggests addresses you have sent email earlier, or addresses of those who have sent email to you.

If I now sent you an email, and you replied to it, next time when you write an email to someone whose address starts with K, my email address would be one of the suggested to you although I am not in your contacts.

 

Win10 Mail - where's the address book?

That’s now the People app.
If you know the contact's name or email address & they’re listed in the People app, you can start typing the first few letters of their name or email address and Mail for Windows 10 will suggest matching contacts.