In SaaS editions of Qlik Sense, admins will need to setup a mail server so that users can share charts via email or receive alerts.
It is however not possible to use Amazon Web Services' smtp server.
Our system requires authentication using an email address, while in AWS the username is in a different format.
- when entering the username, our system does not accept it because it's not a valid email address (error: "the email address is invalid")
- when entering an email address, the sending of the email fails because Amazon Web Services does not accept that.

Environment
- Qlik Sense Business
- Qlik Sense Enterprise SaaS
Resolution
This is a current product limitation.
Workaround:
Use a smtp server that accepts the username being sent as an email address.
R&D is currently investigating how to address this in an item with ID QLIK-103694.
Information provided on this issue is given as is at the time of documenting. For up to date information, please review the most recent Release Notes, or contact support at support.qlik.com with the ID QLIK-103694 for reference.