Mautic marketing tool
Create campaigns and landing pages, connect with social media.
- installs with php & mySQL https://docs.mautic.org/en/setup/getting-started
- has roles to view/edit only own pages, so may be tenant capable
- has SAML SSO https://docs.mautic.org/en/authentication
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information