GIC is built to be flexible.
Uploading an external offer
If anyone submits an offer to your listing from another platform, you can import that offer into GIC by uploading a PDF. Once you've uploaded it, you can drag and drop signature boxes onto the offer so that (if desired) your client can execute the offer and send it back to the buying agent. In this case, the acceptance process does not happen as seamlessly as it would if the offer was submitted using GIC but it's still absolutely possible to upload and interact with offers submitted outside the system.
Limited Agent accounts for free offer submission
Additionally, GIC has a free user type called 'Limited Agent,' wherein an agent who does not wish to register for a paid account but still wants to submit an offer to your GIC listing can sign up for free to submit their offer. The Limited Agent accounts are only able to create and submit 10 offers for free, and do not have access to some of our most powerful features, but they're a free and easy way for an external agent to submit to you directly.
You can promote your listing using the 'Public Link' feature, and external parties will see a button to Submit Offer. If they have an account they will log in, if they do not have an account they will be prompted to sign up for a free Limited Agent account.