If you wish to edit the email invite to support more text, currently we recommend using your email client to send the email.
Feature Request: engineering team will be prioritizing this feature on our roadmap based on customer feedback and will make it available in 2021. Please contact our support team for any updates.
Copy the link when you create a session and send it using your email client (Eg. Google, Outlook, etc)
Clicking Add Participant from the call page will open the link directly in your email client