GMail Send as not working properly to Microsoft Outlook users

I'm using gmail to send emails on email A on behalf of my other gmail account, email B.

I have tried checking and unchecking the alias feature, and regardless when I open the email in microsoft outlook, it knows that I am sending from email A instead of email B.

Is there a way to make this not happen? My original email is embarrassing, but I have everything bought on the playstore on it, and my googleplus profile etc.

Source: http://webapps.stackexchange.com/questions/47024/gmail-send-as-not-working-properly-to-microsoft-outlook-users

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