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Technologies / ClickSend / Postmark

Companies using ClickSend and Postmark

4 companies in our data have public evidence for both ClickSend and Postmark, and 4 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.

4companies use both
33%of ClickSend users
1%of Postmark users
4name 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

CompanyClickSendPostmark
Aeva AIaevaai.com
MSP Processmspprocess.comThe company provides an AI-powered service desk platform that handles requests across voice, chat, SMS, WhatsApp, portal and web channels and writes them to a PSA.Customer support
Schmeits websolutionsschmeits.comSchmeits builds custom software, websites and platforms, system integrations, and provides AI consultancy.Consulting and services
ServiceM8servicem8.comServiceM8 provides job management software for contractors and service businesses, covering scheduling, quoting, invoicing, payments and forms.Productivity and collaboration

The two technologies

ClickSend

Email and communications

ClickSend is a messaging platform for businesses that lets them send, receive and track SMS and MMS messages worldwide, either through a web dashboard or an API. It is used for purposes such as SMS marketing campaigns, alerts and notifications, and transactional messages sent at scale.

Summarized from clicksend.com on 8 Nov 2026.

33% of the 12 companies we see using ClickSend also show the other.

All 12 companies using ClickSend10 name it as a subprocessorMore in Email and communications

Postmark

by ActiveCampaign · Email and communications

Postmark is an email delivery service that sends transactional emails for applications through its API and SMTP service. It is used by developers and companies to send emails such as order notifications and account messages, with the page describing it as focused on inbox deliverability.

Summarized from postmarkapp.com on 8 Nov 2026.

1% of the 385 companies we see using Postmark also show the other.

All 385 companies using Postmark340 name it as a subprocessorMore in Email and communications

Other pairs

Companies with their own evidence for both.

More with ClickSend

Cloudflare12companiesGoogle9companiesStripe9companiesOpenAI7companiesAnthropic6companiesGoogle Workspace6companies

More with Postmark

Cloudflare387companiesGoogle Workspace272companiesStripe247companiesAmazon Web Services224companiesGoogle Analytics165companiesGoogle158companies

Questions

How many companies use both ClickSend and Postmark?

4 companies in StrataDB's data have public evidence for both, and 4 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 ClickSend and Postmark?

Aeva AI, MSP Process, Schmeits websolutions and ServiceM8. Each one links to the evidence behind it.

How does StrataDB know a company uses ClickSend and Postmark?

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 ClickSend and Postmark

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