I’m interested in offering catering on Grubhub. How do I do that? Linh Lam Updated October 10, 2016 14:46 Follow Reach out to your account advisor to learn about your catering options with Grubhub. If you are not currently a Grubhub restaurant partner, email email@example.com or call 877-805-5081. Related articles How do customers order catering on Grubhub? What is the 'Promised by' time? How do I edit modifiers? Learn how to use Grubhub for Restaurants Comments 0 comments Article is closed for comments.