Firstly, as this is a public forum, I’ve removed your email address. But as we don’t also offer email support, we can only respond here I’m afraid. But hopefully you’ll get the emails to let you know when someone replies.
As @Lurch points out above, the way the “email my receipts” feature works, it picks up the from email address and assigns it to the account that way. Perhaps a better option would be Dropbox, which comes with free space. Unlike the email option, Dropbox does support multiple accounts