Sometimes, things get lost, emails get mistyped, or situations change. The sent invite dropdown can handle all three of those scenarios. For any pending invitation, you can click the carrot to the left of the invitation to make adjustments.
Resend Invitation simply sends the same email again.
Edit Invitation allows you to update any setting (Name, Email, Message, Expiration Date)
Disable Invitation will pause the ability for that guest to respond to that form (Other forms are unaffected.)