Cold email software for VoIP providers
Acqro gives business telecom and VoIP providers cold email that researches each prospect's company before writing. Below: verified federal data on the industry across all 50 states, the buyers it sells to, and a playbook for outreach that earns replies.
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How many VoIP providers are in the United States?
The United States had 3,744 establishments in NAICS 517911, telecommunications resellers, in 2023, employing 40,319 people. The largest markets by establishments were Texas, California and Florida. Source: U.S. Census Bureau County Business Patterns.
VoIP providers in the US by the numbers
- US establishments
- 3,744+14.7% vs 2022Census CBP 2023, NAICS 517911
- Paid employees
- 40,319Census CBP 2023
- Average annual pay
- $58,063Census CBP 2023
- Firms under 10 employees
- 82.4%Census CBP 2023
- Largest state
- TexasBy establishments, CBP 2023
Census does not publish a separate category for business telecom and VoIP providers; figures use NAICS 517911, Telecommunications Resellers, the closest official industry. 82.4% of establishments have fewer than 10 employees, so most firms in the industry run outbound with a founder or a very small sales team. The 643 firms with 10 to 249 employees are the ones most likely to be building a repeatable outbound process.
The five largest states hold 39.5% of all establishments. Among states with at least 100 establishments, the fastest growth between 2022 and 2023 was in Arizona (+169.0%), Ohio (+124.1%) and Michigan (+15.3%). Growing markets bring new competitors and new buyers at the same time, which rewards outreach that is specific rather than volume-driven.
VoIP providers by state
All states and DC ranked by number of establishments, with the change since 2022.
| Rank | State | Establishments | Employees | Change vs 2022 |
|---|---|---|---|---|
| 1 | Texas | 418 | — | +9.7% |
| 2 | California | 405 | 3,225 | +14.7% |
| 3 | Florida | 309 | 3,859 | +1.0% |
| 4 | Illinois | 189 | — | +13.2% |
| 5 | Michigan | 158 | — | +15.3% |
| 6 | Arizona | 156 | — | +169.0% |
| 7 | New York | 146 | 1,645 | −11.0% |
| 8 | Ohio | 121 | 1,291 | +124.1% |
| 9 | Pennsylvania | 117 | 760 | +6.4% |
| 10 | Georgia | 112 | 1,118 | −39.8% |
| 11 | North Carolina | 97 | 1,177 | −2.0% |
| 12 | Colorado | 93 | — | +89.8% |
| 13 | Louisiana | 91 | — | +16.7% |
| 14 | Oklahoma | 90 | — | +109.3% |
| 15 | Virginia | 87 | 916 | +45.0% |
| 16 | Wisconsin | 83 | — | +22.1% |
| 17 | Maryland | 82 | 570 | +34.4% |
| 18 | New Jersey | 78 | 1,879 | −10.3% |
| 19 | Iowa | 66 | — | +88.6% |
| 20 | Indiana | 59 | — | +37.2% |
| 21 | Massachusetts | 59 | — | −1.7% |
| 22 | Minnesota | 54 | — | +28.6% |
| 23 | Nevada | 54 | 1,016 | +54.3% |
| 24 | South Carolina | 54 | 186 | −18.2% |
| 25 | Alabama | 50 | 303 | −25.4% |
| 26 | Tennessee | 50 | 419 | −19.4% |
| 27 | Mississippi | 47 | — | +2.2% |
| 28 | Missouri | 46 | 337 | +35.3% |
| 29 | Oregon | 46 | 1,026 | +58.6% |
| 30 | Arkansas | 44 | 293 | +37.5% |
| 31 | Kentucky | 37 | — | +15.6% |
| 32 | Connecticut | 35 | 358 | −5.4% |
| 33 | Utah | 28 | 349 | −9.7% |
| 34 | Washington | 27 | — | −12.9% |
| 35 | North Dakota | 24 | — | +118.2% |
| 36 | West Virginia | 22 | 103 | +4.8% |
| 37 | Nebraska | 18 | — | +100.0% |
| 38 | Kansas | 15 | — | +50.0% |
| 39 | Maine | 13 | — | +8.3% |
| 40 | Delaware | 10 | — | −9.1% |
| 41 | Idaho | 9 | — | 0.0% |
| 42 | New Hampshire | 9 | — | 0.0% |
| 43 | New Mexico | 9 | — | +12.5% |
| 44 | Rhode Island | 8 | — | +100.0% |
| 45 | South Dakota | 6 | — | — |
| 46 | Wyoming | 5 | — | −16.7% |
| 47 | Montana | 3 | — | 0.0% |
Who VoIP providers sell to
Common buyer industries for business telecom and VoIP providers, with US establishment counts and how many have 10 to 249 employees.
| Buyer industry | Establishments | 10–249 employees | Employees |
|---|---|---|---|
| Offices of Physicians | 218,066 | 58,939 | 2,771,935 |
| Legal Services | 181,092 | 23,511 | 1,190,297 |
| Activities Related to Real Estate | 114,391 | 13,801 | 818,574 |
| Accounting, Tax Preparation, Bookkeeping, and Payroll Services | 137,069 | 17,654 | 1,297,995 |
How VoIP providers should run cold email
Business telecom and VoIP providers sell business phone systems, VoIP, connectivity and unified communications. These are the contacts, triggers and messages that make a first email relevant rather than generic.
Who to email
- Owner or office manager
- IT director or IT manager
- Operations director
- Practice administrator
Signals worth researching
- Office moves and new locations
- Remote or hybrid work shifts
- Legacy phone system references
- Contact centre or support team growth
What to say
- Reference the move or work-model change
- Speak to reliability and call handling
- Offer a short setup assessment
What to avoid
- Technical jargon on first contact
- Unverifiable cost-savings percentages
Cold email for VoIP providers, answered
How many VoIP providers are there in the US?
There were 3,744 establishments in NAICS 517911 (Telecommunications Resellers) in 2023, employing 40,319 people. Source: U.S. Census Bureau, County Business Patterns 2023.
Which states have the most VoIP providers?
By establishments in 2023: Texas (418), California (405), Florida (309), Illinois (189) and Michigan (158). Source: U.S. Census Bureau, County Business Patterns 2023.
When do businesses switch phone providers?
During office moves, when adding locations, when shifting to hybrid work or when a legacy system reaches end of support. These events are good triggers for outreach.
Who buys business phone systems?
Office managers and owners at small businesses, IT managers at mid-sized companies, and practice administrators in healthcare.
Is cold email legal in the United States?
Yes. The federal CAN-SPAM Act permits commercial email to business contacts without prior consent, provided the message identifies the sender accurately, uses a truthful subject line, includes a valid physical postal address and a working opt-out, and honours opt-out requests promptly. CAN-SPAM applies in every state and preempts most state commercial email laws, except provisions aimed at falsity or deception. This is general information, not legal advice.
Explore related pages
VoIP Providers by state
Other industries
Sources and methodology
Every figure on this page comes from a federal statistical release and is shown with its source and reference year. Figures the agencies withhold or publish with high noise are left out rather than estimated. Page updated September 17, 2026.
- U.S. Census Bureau, County Business Patterns 2023 and 2022: establishments, paid employment for the pay period including March 12, annual payroll, and establishments by employment size. Industries use NAICS 2017 codes.
- Industry definition: NAICS 517911, Telecommunications Resellers, used as the closest official category for business telecom and VoIP providers.
Built for VoIP providers who sell to a finite list
Acqro researches every account on your list and writes the first email from what it finds.
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