Business email lists by trade: US, Canada and UK (2026)

Architects publish an email most often, hospitals least

Each trade links to its own page: the count by state, the ad tags on their websites, their ratings, the chains among them and what the list costs.

Restaurants are the largest list, with 368,242 listings with an email. In share, architects lead at 59.4%, and hospitals close the table at 11.0%.

Source: Primavera, November 9, 2026. A business counts in a trade by its main Google Maps category, or by another of its categories when the main one is generic.

Therapists and counselors publish an email most often, clothing stores least

The 10 largest lists in Canada, each with its own page; the Canadian business email lists by trade explain how they were chosen among 203.

Restaurants are the largest list, with 26,998 listings with an email. In share, therapists and counselors lead at 57.0%, 24.1 points above the Canadian average, and clothing stores close the table at 24.2%.

Charities and associations publish an email most often, doctors and medical clinics least

The 10 largest lists in the UK, each with its own page; the UK business email lists by trade explain how they were chosen among 289.

Restaurants are the largest list, with 48,963 listings with an email. In share, charities and associations lead at 40.1%, 12.4 points above the UK average, and doctors and medical clinics close the table at 14.1%.

A list counts businesses on Google Maps, not people

Each row is one Google Maps listing: an office, a store, a clinic, sometimes a professional with a listing of their own. Most list vendors count people instead, such as licensed agents or registered lawyers, which is why their numbers run higher or lower than ours. Service points such as lockers are left out.

A US trade has a page when it passes three thresholds: at least 2,000 listings, at least 20 states with 50 or more, and at least 10% with an email. In Canada and the UK, the same thresholds apply, with provinces or nations in place of states; the ten largest lists that pass have a page. Below that, a national email list would be too thin to be worth a page.

US physicians: 2,049,937 listings, but only 7.5% with an email

Doctors’ offices and medical clinics are the largest US trade we measure, yet they rarely publish an email address: 7.5% do, under the 10% threshold. We publish no US physician email list for that reason; the hospital page shows what a thin health list looks like. The same list passes elsewhere: physicians and medical clinics in Canada (24.2% with an email) and doctors and medical clinics in the UK (14.1% with an email).

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