Use TwinNumber with Seamless.
Ordering on Seamless while you're in the U.S., or keeping your personal number off it? Use a real U.S. mobile number for sign-in codes and the texts from your driver or shopper.
- What we tested
- Adding and verifying the number on the account
- Line type
- Mobile
- Last tested
- Oct 22, 2026
We re-test Seamless regularly and update this date.
What Seamless uses your number for
- Seamless sends order status texts to the cell number on your account.
- The restaurant or your delivery person may text you about your order.
- Customer Care may answer some requests by text.
Add your TwinNumber on Seamless
- 01
Sign in
Sign in to Seamless on the website or in the app.
- 02
Open your profile
Open your account profile page, where you can update your phone number and other personal details.
- 03
Save the new number
Enter the new phone number and save it.
Why the line type matters
Delivery apps often check whether a number is mobile, landline or VoIP before sending a code, and many turn VoIP numbers away. TwinNumber numbers are registered as mobile.
Why banks reject Google Voice →
DoorDash
Uber Eats
Instacart
GrubhubQuestions
How do I stop Seamless order texts?
Reply STOP to the number sending them. Stopping Grubhub's texts doesn't stop Seamless's, and service messages such as security notices keep coming.
Do I have to update Seamless when I change numbers?
Yes. Seamless's terms ask you to update your account right away if the number on it changes or is deactivated.
Where does Seamless work?
Seamless, part of Grubhub, lists restaurants in cities across the U.S. TwinNumber receives texts, not calls yet, so order texts reach your browser but a call from the restaurant won't.
Do I need to live in the U.S.?
No. TwinNumber works from 150+ countries with just a browser and an internet connection.
Is TwinNumber affiliated with Seamless?
No. We test our numbers with popular services and publish the results. Seamless is a trademark of its owner.
What if a code doesn't arrive?
Request a new code, then check your inbox and notification settings. If it keeps failing, contact us and we'll look into it.
Ready for Seamless codes?
Join the waitlist and be among the first to get your U.S. mobile number.