9,000+ local service businesses in Detroit in our database, refreshed October 2026.
21% publish an email address — 1,900+ you can reach by cold email.
4,300+ have no website listed and 9,000+ have no Google rating yet.
0% of rated businesses hold 4.5★ or better.
Area codes
(313)8,200+
(248)243
(734)97
(586)81
(800)43
(888)41
A few Detroit businesses
Dana ContainerCleaning
Express Car SalesAuto Dealers
Joe Muer SeafoodRestaurants
Advanced Copier ServicesIT Services
RL ConcettiMarketing Agencies
La Michoacana Tortilla BakeryCafes & Bakeries
Party GearPhotography
j3n DesignSoftware
Reaching out in the USB2B cold email is governed by CAN-SPAM: honest headers and subject lines, a physical address and an opt-out you honor. Phone outreach has its own rules, especially for cell phones. Read our CAN-SPAM guide and cold-calling rules before you start.