The only thing a tenderer can respond with directly from the tender invitation email is their intent to tender. Best practice is to have each of your tenderers sign in and create a password to submit their tender in Procore. That way, their tender is automatically logged from the Planroom into the Tendering tool where you can then transfer to the Commitments tool when you have selected a winning tender.
If they simply email their tender to you, you will have to manually enter in each tender into the Tendering tool. Furthermore, if your tenderers don't sign in to access the Planroom, they won't have access to the tender package other then the tender documents that are attached to the email, which may cause unnecessary stress on both ends.