StudioBinder's Sharing feature allows users to have complete control of their invites, it even allows users to include a custom message when inviting Reviewers and Collaborators to view, comment, or edit.
Step 1 – Access Sharing Menu
Go to the page you would like to share, then click the Share Icon.
Step 2 – Click Invite Collaborators
In the Sharing pop-up, click Invite Collaborators To This page,
Step 3 – Include a Message
In the pop-up, enter their contact details, select permission access, then click Include Message.
Step 4 – Invite Person or Remove Message
When the message is complete, click Invite (X) Collaborator. Or simply click Remove Message to send the invite without a message.