Company lists · Data refreshed September 2026

Top 25 Notification management platforms based in the United States

RevenueBase identified 103 notification management platforms headquartered in the United States as of September 2026 and tracks 3,133 professional contacts across them, including 842 with verified work emails. New York is the largest hub.

This list covers notification management platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
103Companies
3,133Contacts tracked
842Verified emails
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The 25 largest notification management platforms based in the United States

Ranked by team size
Top 25 of 103 notification management platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to notification management platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, United StatesHQ checked Sep 29, 20261,001-5,0001,287 contacts →

Indirect evidence

“Attentive® knows personalized customer experiences require both powerful technology and the right people behind it.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidencePortland, OR, United StatesHQ checked Sep 29, 2026201-500446 contacts →

Partial evidence

“Create personalized customer journeys that engage and convert with our versatile customer engagement platform.”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 2026n/a237 contacts →

Strong evidence

“Courier is the customer messaging and notifications platform where your team and AI agents collaborate.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceSan Mateo, CA, United StatesHQ checked Sep 29, 202651-200191 contacts →

Partial evidence

“OneSignal is the leading customer engagement platform for push, email, SMS/RCS, and in-app messaging.”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceDallas, TX, United StatesHQ checked Sep 29, 202651-200110 contacts →

Strong evidence

“Regroup's award-winning, cloud-based mass notification platform is used every day by thousands of organizations to save lives, improve safety for entire communities, respond to…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceBozeman, MT, United StatesHQ checked Sep 29, 202651-20060 contacts →

Indirect evidence

“Quiq is a leading technology company based in Bozeman, Montana that makes it easy for people to have a conversation with a company.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceMiami Beach, FL, United StatesHQ checked Sep 29, 202651-20050 contacts →

Indirect evidence

“SimpleTexting is the easiest way to send messages to customers, employees, or anyone else you need to reach.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceSonora, CA, United StatesHQ checked Sep 29, 202651-20036 contacts →

Indirect evidence

“Front Porch solutions lower costs and increases revenue for service providers like Comcast and Time Warner Cable.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceVirginia Beach, VA, United StatesHQ checked Sep 29, 202651-20031 contacts →

Indirect evidence

“From SMS and WhatsApp to multi-channel mobile journeys, Esendex helps you deliver business messaging that puts the power in your customers’ hands.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceNewport Beach, CA, United StatesHQ checked Sep 29, 202651-20028 contacts →

Partial evidence

“A comprehensive multi-patented emergency alert system & mass notification system, suitable for businesses, governments and schools.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceNew York, United StatesHQ checked Sep 29, 202611-5027 contacts →

Indirect evidence

“Knock is infrastructure for sending product and customer messaging.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceWilmington, DE, United StatesHQ checked Sep 29, 202651-20026 contacts →

Partial evidence

“MessageSpring simplifies your communication efforts by reaching audiences who are most important to you through a single platform, with the right message, at the right time, in…”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceNew York, United StatesHQ checked Sep 29, 202611-5020 contacts →

Indirect evidence

“Sortment understands your business, identifies opportunities, and runs lifecycle programs end to end across email, push, SMS, and in-app.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceBellevue, WA, United StatesHQ checked Sep 29, 202611-5015 contacts →

Indirect evidence

“BrightArrow Technologies revolutionizes the way organizations automatically deliver messages simultaneously to large groups of people.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceJupiter, FL, United StatesHQ checked Sep 29, 202611-5014 contacts →

Partial evidence

“Used by over organizations around the US & Canada the DialMyCalls mass notification system allows you to send a notification via phone call, text message and email within seconds.”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 20261-1014 contacts →

Indirect evidence

“Zelo redefines how companies communicate internally.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“Solana's Most Trusted Alerts Stack.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidencePleasant Hill, CA, United StatesHQ checked Sep 29, 202611-5012 contacts →

Indirect evidence

“Since 2009 Textmunication has been building an interactive messaging experience that uses the SMS and MMS infrastructure.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceIdaho Falls, ID, United StatesHQ checked Sep 29, 202611-5010 contacts →

Indirect evidence

“Reach people where they are, when you need to be heard.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-109 contacts →

Partial evidence

“Zapier for Notifications.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidencePleasanton, CA, United StatesHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Discover what makes SendHub the right choice for your enterprise.”

Source: RevenueBase Database · checked Sep 29, 2026
22Strong evidenceSan Jose, CA, United StatesHQ checked Sep 29, 20261-108 contacts →

Strong evidence

“World's second largest and fastest growing web push notifications platform, helping 20K+ businesses deliver 2B+ web push and on-site messages daily.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceSalem, NH, United StatesHQ checked Sep 29, 202611-506 contacts →

Indirect evidence

“Brick Street Software develops the world’s most adaptive enterprise marketing solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceNew York, TX, United StatesHQ checked Sep 29, 202651-2006 contacts →

Indirect evidence

“Waterfall enables you to reach your customers where they are, and motivate them in the moment with enterprise messaging software built to drive engagement.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceSouth Jordan, UT, United StatesHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“When a crisis starts there isn't enough time to create a mass notification.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 103 notification management platforms based in the United States

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Notification management platforms based in the United States at a glance

As of Sep 29, 2026
26.9%Verified-email coverage
30.4Average contacts per company
11-50Median size (employees)
12.6%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
40
11-50
45
51-200
15
201-500
2
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 103 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among notification management platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “notification management platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names notification management platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among notification management platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 842 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names notification management platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many notification management platforms are there based in the United States?

RevenueBase identified 103 notification management platforms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Attentive, headquartered in New York, tops this list with the largest team on record.

Which city has the most notification management platforms?

New York leads with 13 headquartered companies, followed by San Francisco (5) and Chicago (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 842 verified decision-maker contacts tracked across these 103 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.