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Technologies / Slack / Zerobounce

Companies using Slack and Zerobounce

14 companies in our data have public evidence for both Slack and Zerobounce, and 14 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

14companies use both
1%of Slack users
50%of Zerobounce users
14name both as subprocessors

Companies using one are 6.1 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanySlackZerobounce
Activelyactively.aiActively provides AI agents that work sales accounts by researching, prioritizing, and drafting outreach for revenue teams.AI and machine learningSales
AiSDRaisdr.comAiSDR provides AI sales software that finds prospects and sends automated outreach emails to book meetings.AI and machine learningSales
Banzaibanzai.ioBanzai provides a suite of marketing and sales tools, including webinar, video content, and AI-powered dialing products.Marketing
banzaicurate.comCurate is an AI newsletter tool that writes and sends branded newsletters automatically.AI and machine learningMarketing
Clozdclozd.comClozd collects customer feedback through live, AI-assisted, and AI-led interviews, and provides a platform for analyzing it.Sales
Frecklefreckle.ioFreckle provides a CLI for running GTM workflows and enrichments from the terminal.Sales
Fundraise Upfundraiseup.comFundraise Up provides an AI-powered fundraising platform for nonprofits, including checkout, payment methods, peer-to-peer fundraising, and donor management tools.
GRIN AIgrin.aiGrin provides AI-native creator marketing software that finds, recruits, activates, and manages creators for brand partnership programs.Marketing
kudosity.comKudosity provides a business messaging platform for SMS, MMS, WhatsApp, RCS and conversational AI, with a REST API and integrations.CommunicationsDeveloper tools
Poll Everywherepolleverywhere.comPoll Everywhere provides live interactive polling and Q&A tools that embed into presentation formats such as PowerPoint, Google Slides, and Canva.EducationProductivity and collaboration
Portport.ioPort provides a platform to build, govern and operate an agentic SDLC, including a context lake, agent management, governance and workflow orchestration.AI and machine learningDeveloper tools
Uptimeuptime.comUptime.com provides website and API monitoring services, including uptime checks, synthetic monitoring, and status pages.Cloud and infrastructure
Surface Labswithsurface.comSurface provides a marketing system that uses revenue data to run campaigns.AI and machine learningMarketing
Yugabyteyugabyte.comYugabyte provides a distributed PostgreSQL database available as open source and as database-as-a-service offerings.Cloud and infrastructure

The two technologies

Slack

by Salesforce · Productivity

Slack is a collaboration platform where teams chat, share files, and work together in channels. It is used for team communication, connecting apps and agents, and automating everyday work.

Summarized from slack.com on 8 Nov 2026.

1% of the 1,978 companies we see using Slack also show the other.

All 1,978 companies using Slack1,378 name it as a subprocessorMore in Productivity

Zerobounce

Email and communications

ZeroBounce is an email verification and deliverability platform. It is used to verify emails, clean email lists, build sender reputation, and monitor inbox health.

Summarized from zerobounce.net on 8 Nov 2026.

50% of the 28 companies we see using Zerobounce also show the other.

All 28 companies using Zerobounce25 name it as a subprocessorMore in Email and communications

Industries

Among the companies above, by our own classification of their homepage.

AI and machine learning5Sales4Marketing4Developer tools2Cloud and infrastructure2

Other pairs

Companies with their own evidence for both.

More with Slack

Cloudflare1,855companiesGoogle Workspace1,614companiesAmazon Web Services1,329companiesStripe919companiesGoogle Tag Manager894companiesGoogle830companies

More with Zerobounce

Cloudflare27companiesAmazon Web Services23companiesGoogle Workspace21companiesGoogle Tag Manager17companiesHubSpot15companiesOpenAI15companies

Questions

How many companies use both Slack and Zerobounce?

14 companies in StrataDB's data have public evidence for both, and 14 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Slack and Zerobounce?

Actively, AiSDR, Banzai, banzaicurate.com and Clozd, and 9 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Slack and Zerobounce?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Slack and Zerobounce

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call