Set up email client to be able to reply using ****@worldnet.att.net instead of just att.net
I signed up for an Amazon account back when ATT emails had the worldnet.att.net domain. When ATT eventually started allowing the att.net domain I changed my Thunderbird account to drop the worldnet part of the domain but I never changed out my Amazon information.
Amazon has locked me out of my account and is requiring that I reply to their email from the email address that my account is registered to. That email address uses the worldnet.att.net domain.
I tried to add an email account to Thunderbird using ****@worldnet.att.net but keep getting the message email address or password is incorrect.
Is there any way to set up a new email address so I can send a reply to Amazon using ****@worldnet.att.net instead of ****@att.net?