However, the sub-account signup prevents me from using the same email address I have previously used on the RH platform, with this error msg: A user already exists with that email address
While I can workaround this issue (by inserting extra periods in my Gmail address, etc.), is there a legitimate way for me to reuse my existing email address?
Hello! Unfortunately, this is a limitation of our client portal system and the software it runs. I would either do as you suggested by inserting extra periods into your Gmail address, or by using Gmail’s + delimiter to make aliases.
If you are unfamiliar, you can take a Gmail address (like myemail@gmail.com) and add a plus symbol and text before that @ to make on the fly aliases (like myemail+alias@gmail.com). Email sent to myemail+alias@gmail.com will get sent to the myemail@gmail.com account. I frequently use this for various services, and it will work here with our client portal as well as a workaround.