How can I invite a user to multiple tenants with a single email address?

Products

• CloudHealth

Issue/Introduction

The unique identifier for a user is their email address, and for this reason an email address may only be used once in CloudHealth.

Resolution

A possible workaround for users that must have access to more than one tenant is to use email subaddressing to create alternate email aliases for additional tenants. As an example if the user email is [e-mail], a subaddress could be created to access a second tenant in the form of [e-mail]. 

https://en.wikipedia.org/wiki/Email_address#Subaddressing