sons gamer tag is attached to all my emails

you can take it off his account after putting a diff on his account threw xbox my account

Hi Karina,

An Xbox Gamertag won't appear in your emails as a signature or display name in any way. I've personally never seen that before, especially if the Xbox account uses a Microsoft account that was created using a third-party email (Gmail, yahoo, work emails).
If you use a Microsoft affiliated email address (outlook, hotmail, msn), then the display name you see when you login to your Microsoft account could be seen in emails. Do you use a third party or Microsoft affiliated email?

Follow this support article, https://support.microsoft.com/en-us/help/4027722/microsoft-account-how-to-change-your-display-name,
for further instructions on how to change that display name.

It does take a little while for the gamertag change to show up.

Removing the gamertag from whatever system and pc he's using it and readding it on them usually makes it show.

thank you for your reply, he changed it about 2 weeks ago, its showing to all his friends as the new one but everytime i send an email it comes up with the old one, i dont want his gamertag attached to my email at all!

Hi.

So the gamer tag associated with my email (the adult) is there to stay or can I delete that gamer tag and create my own? Then I could create a new profile for son #1 and a new gamer tag.

I have figured out/created a new profile and gamer tag for son #2.

So I would like to:

change the gamer tag that is connected to my email account (the adult).

If possible I would like to keep my son's gamer tag and just move it to the email account/profile I created for him... (I'm pretty sure you said I couldn't do this but just checking?