Insulation contractor email list: contacts, email checks and how to use it
A insulation contractor email list is a set of insulation contractors with an address you can send to, and the useful ones tell you which addresses the mail server confirmed. As of 13 Nov 2026, the 67Leads warehouse holds 4,227 sellable insulation contractors with a phone. 788 of them have an email, 314 of those emails were confirmed by the mail server, and 270 name an owner on their own site.
Key numbers
- 4,227Sellable businesses with a phone (insulation contractors)
- 788Email verified or catch-all (insulation contractors)
- 314Email confirmed by the mail server (insulation contractors)
- 300Verified email that is not a shared inbox (insulation contractors)
- 270Owner name read from the company site (insulation contractors)
- 42Owner name and a verified email (insulation contractors)
- 805No website on the listing (insulation contractors)
Live from the 67Leads warehouse, computed (US Central) when this page was served. Sellable means graded as the trade, with a phone, opted-out businesses removed. Methodology.
Shortcut: the insulation contractor lead list shows counts by state and city, the verified emails and owner emails pages apply the email filters, and the email verifier checks a single address.
What is in the insulation contractors list
These are the live counts today:
| Group | Insulation contractors |
|---|---|
| Sellable insulation contractors with a phone | 4,227 |
| With an email, verified or on a catch-all server | 788 |
| With an email the mail server confirmed | 314 |
| Confirmed email that is not a shared inbox | 300 |
| Owner name read from the company's site | 270 |
| Owner name and a confirmed email | 42 |
| No website on the listing | 805 |
Counts are listings that match today and move as the data refreshes. Not every company has an email, so a list of insulation contractors with emails is smaller than a list of every insulation contractor we hold. Call the rest.
What the columns are
Each row in the default export holds:
- Company and category. The business name and what its listing says it does.
- Phone and line type. The number, and whether it is a local or a toll-free line.
- Website and domain. The site on the listing, or blank when there is none.
- Email and email status. The address, read from the company's own website, and the result of the check.
- Owner name. Filled only when the company's site names one, with where it came from.
- Address. Street, city, state and postal code.
- Rating and review count. From the public listing.
How the emails are checked
Emails are read from the company's own website. None is guessed from a name pattern. Each one is then checked over SMTP: we ask the company's mail server whether that exact mailbox exists. Nothing is sent.
- Verified. The server said the mailbox exists.
- Catch-all (labelled risky). The server accepts every address, so the check cannot tell if this one is real. These are not counted as verified.
- Invalid. The server said the mailbox does not exist.
A check shows the state of a mailbox when it was run. It does not show that a person reads it, and addresses can go stale as people leave and domains lapse. Run the rows you plan to use through the email verifier again before a large send, and drop any hard bounce at once.
Filter the list by state
These are the states with the most sellable insulation contractors in the warehouse today:
| State | Sellable | Verified email | No website | Owner named |
|---|---|---|---|---|
| California | 388 | 4% | 23% | 2% |
| Texas | 355 | 1% | 14% | 5% |
| Florida | 229 | 8% | 18% | 3% |
| Ohio | 151 | 9% | 15% | 15% |
| Tennessee | 119 | 6% | 16% | 7% |
| South Carolina | 117 | 11% | 15% | 6% |
| New York | 114 | 4% | 24% | 11% |
| North Carolina | 112 | 4% | 15% | 7% |
| Virginia | 111 | 9% | 25% | 8% |
| Arizona | 105 | 3% | 17% | 5% |
States with 50+ sellable businesses, largest first, live from the 67Leads warehouse.
Work one state or one metro at a time so your message can name a place. The insulation contractor lead list filters by state and city.
Who buys a insulation contractor email list
- Insulation material and equipment suppliers. They sell to the owner who buys by the truckload.
- Estimating and job-management software. Many crews price from a rough walk-through.
- Marketing and lead agencies. Energy-saving jobs start with a homeowner's search.
Insulation work follows the seasons and the incentive calendar: homeowners think about it before winter and summer bills, and the busy weeks leave owners little time. Reach out ahead of those weeks, tie your offer to one job type the company already lists and keep it brief.
Pair the email with a call when the list shows no email. A phone is on every row, and the cold email grader scores a draft before you send it.
Use it legally
Email to a business is covered by CAN-SPAM. The law makes no exception for business-to-business messages, so every commercial email needs:
- A true sender name and a subject line that matches the message.
- A clear sign that it is an advertisement.
- Your valid postal address.
- A working opt-out that you honor within 10 business days.
Keep a do-not-email list and check each send against it. The FTC's CAN-SPAM guide covers the rules and the CAN-SPAM checker tests a draft. Never send to a hard bounce twice.
Most states license insulation contractors, and some require the licence number in advertising. Check the state licence before you write about a company, never claim a licence you cannot see, and leave out anything you cannot back up.
Do not text the phone numbers on the list as a first touch. Texting a business needs consent under the Telephone Consumer Protection Act, and a listed number is often the owner's own mobile. This is general information, not legal advice.
What it costs
Search and counts are free, with emails and phones masked. Your first 67 leads export free, and after that credits start at $6.70 per 1,000. Monthly plans are on the pricing page.
How 67Leads fits
67Leads is a search over public business listings and company websites. Companies are graded against the trade, and off-trade rows are never sold. Open the insulation contractor lead list to filter by state, then use the verified emails pages to narrow to rows with an email. The email verifier and the lead list cleaner help before you send. Our guide to building a verified email list for local businesses explains the steps in more depth, and is buying an email list legal covers the law.
Questions
How many insulation contractors are on the list?
As of 13 Nov 2026, 4,227 sellable insulation contractors with a phone, and 314 of them have an email the mail server confirmed. That counts the listings we hold, graded against the trade, not every insulation contractor in the country.
What does a verified email mean?
The company's mail server was asked whether the exact mailbox exists and said yes. A server that accepts every address is labelled catch-all and is not counted as verified.
Are the emails guessed from names?
No. Each address is read from the company's own website. None is built from a name pattern.
Are insulation contractors a small list?
It is a smaller trade than roofing or plumbing, which is why the live count above matters. We show what the warehouse holds today, not a national estimate.
Can I filter insulation contractors by state?
Yes. The state table shows the states with the most, and the lead list lets you narrow by state and city.
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