If you haven't already, read up on the general setup of SAML with Receptive.
Here's a walk-through of setting up Google G-suite (formerly known as Google Apps for Work) as your SAML Identity Provider. This allows your team to log into Receptive without a new email / password combination, they just log in to your Google account.
Go to your Google G-suite admin page.
Choose "SAML apps"
Click on the "Plus" icon lower-right to add a new SAML app.
Choose "Setup my own custom app" at the bottom of the list.
Choose "Option 2", download your IDP metadata. Send it to Receptive support on firstname.lastname@example.org.
NOTE: When you send across your IDP metadata, be sure to tell us whether you're setting up SAML for your customers or for your team members.
Support will respond with URLs that are unique to your account and you will use in the next steps.
Set "Receptive" as the Application Name. Grab the logo from here and upload to Google.
Enter the ACS URL and Entity ID URLs that Receptive support provided into the form above.
Select EMAIL as the Name ID Format
Switch your new SAML App "ON for everyone"
Notify email@example.com that you are ready to switch on SAML Login.