Windows 10: Mail app From address using personal domain name

If I lease a domain such as terforums.co.uk and set up a forwarding address so that L: me@tenforums.co.uk redirects to L: myaccount@gmail.com how can I have the Windows 10 mail app send so that the from address is shown to the receiver as L: me@tenforums.co.uk please ?

:)

 

Windows 10 Mail with an IMAP account

Thank you for your reply, but I really don't understand your questions.

The email addresses are all from GoDaddy on an IMAP server and I have a personal private domain name used for all three accounts. I am trying to set up Microsoft Mail using the tile on Windows 10 named "Mail"

 

Adding an IMAP account to the Windows 10 mail app

For the record, I have the same issue with Windows 10 Mail. The user name I need to use for authenticating with my SMTP server is not the same as my email address - and the domain of my SMTP server is different from the domain that my mail comes from.

Basically, my user name is FooLogin on mail server mail.bar.com, but my actual email address that I want people to be able to reply to is
*** Email address is removed for privacy *** and there appears to be no way to set that information in the Windows 10 mail app (as opposed to Outlook, Windows 8 mail, Windows 8.1 mail, Windows Phone 8 mail, etc, etc).

Note that both my personal email AND my work email have this same quirk, so I can't use Windows 10 mail to send either.

Being able to actually specify the email address that I'm sending from is an absolute must for me, otherwise I cannot send mail that can be replied to at a valid email address, as there is no way for either my SMTP server or Windows 10 Mail
itself to infer the proper email address without it.

At least on the PC I can just use another email client - but once Windows 10 ships out to phone, I'll be completely screwed if this is the mail app that ships to it, and unable to send email from my either personal OR my work account from my phone.