Cornerstone Copy & Mail


New Customers: For a limited time, rent a mailbox for 12 months and get 3 additional months free!

New Year Special: All customers enjoy 10% off Fedex Express shipping. Mention code: NEWYEAR23

Need to get in touch?

Call 925-937-2980

A Full Service Experience

Our services include full service and self service copying, color copies, business cards, bindery / finishing, mailbox rental, packing and shipping, fax, scanning, notary, computer rental, stationery / greeting cards, office supplies and packing supplies. We also have convenient, free parking.

Need Walnut Creek notary service? We're the solution! We can notarize your document, copy it, scan it, fax it, or ship it anywhere you need!

Mobile notary service by appointment