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Technologies / Google Tag Manager / Mailersend

Companies using Google Tag Manager and Mailersend

10 companies in our data have public evidence for both Google Tag Manager and Mailersend, and 1 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.

10companies use both
under 1%of Google Tag Manager users
36%of Mailersend users
1name both as subprocessors

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

CompanyGoogle Tag ManagerMailersend
ComplyDogcomplydog.comComplyDog provides GDPR compliance software that sets up a compliance portal, automates DPA signing, and handles data requests.Compliance and risk
BuchhaltungsButlerbuchhaltungsbutler.deBuchhaltungsButler provides cloud-based accounting software with automated bookkeeping, document management, and bank account connections.Finance and accounting software
Curiositycuriosity.aiCuriosity builds internal software and AI agents from plain-language descriptions, grounded in a company's connected data and existing permissions.AI and machine learning
curiocuriosity.shCuriosity provides a command line tool called curio that connects to Curiosity Studio, giving users a two-panel terminal interface to edit, build, commit and approve workspace configuration files.Developer tools
Easy LMSeasy-lms.comEasy LMS provides a learning management system for creating and delivering branded online courses and exams.Education
Essential Assessmentessentialassessment.com.auEssential Assessment provides curriculum-aligned mathematics and English assessments and resources for schools.Education
Hedy AIhedy.aiHedy provides AI coaching and real-time insights that listen to conversations and offer suggestions, along with transcription and session summaries.AI and machine learningProductivity and collaboration
Jaapijaapi.comJaapi provides a branded swag store where employees and clients choose items that are made on demand and shipped from facilities near the recipient.HR and recruiting
Kandirkandir.ioKandir provides AI agents that monitor sales accounts and flag changes such as job moves, competitor activity, and budget shifts.AI and machine learningSales
Tebitebi.comTebi provides a connected system for hospitality operations that links reservations, POS, kitchen display, payments, and inventory with back-office admin.Food and restaurants

The two technologies

Google Tag Manager

by Google · Analytics

Google Tag Manager is a tag management system that lets you configure and deploy tags on your website or mobile app through a web interface. It is used to add and update tags, such as measurement and marketing optimization tags, without editing your site code.

Summarized from developers.google.com on 8 Nov 2026.

under 1% of the 8,994 companies we see using Google Tag Manager also show the other.

All 8,994 companies using Google Tag Manager57 name it as a subprocessorMore in Analytics

Mailersend

Email and communications

Mailersend is a transactional email API and SMTP service that lets developers send reliable email, SMS and WhatsApp messages from their applications. It is used to deliver critical messages such as order confirmations, notifications, password resets and one-time passcodes at scale.

Summarized from mailersend.com on 8 Nov 2026.

36% of the 28 companies we see using Mailersend also show the other.

All 28 companies using Mailersend26 name it as a subprocessorMore in Email and communications

Industries

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

AI and machine learning3Education2

Other pairs

Companies with their own evidence for both.

More with Google Tag Manager

Cloudflare9,003companiesGoogle Workspace5,952companiesGoogle Analytics3,378companiesHubSpot2,813companiesAmazon Web Services2,568companiesWordPress2,568companies

More with Mailersend

Cloudflare28companiesStripe19companiesGoogle Workspace17companiesGoogle15companiesGoogle Analytics14companiesOpenAI11companies

Questions

How many companies use both Google Tag Manager and Mailersend?

10 companies in StrataDB's data have public evidence for both, and 1 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 Google Tag Manager and Mailersend?

ComplyDog, BuchhaltungsButler, Curiosity, curio and Easy LMS, and 5 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Google Tag Manager and Mailersend?

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 Google Tag Manager and Mailersend

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