Companies using GatewayAPI and Resend

5 companies in our data have public evidence for both GatewayAPI and Resend, and 3 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.

5companies use both

71%of GatewayAPI users

under 1%of Resend users

3name both as subprocessors

Companies using one are 12 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

Company	GatewayAPI	Resend
Availableavailable.dkAvailable sells and implements Zendesk for businesses and provides related training and courses in customer service.Customer support Consulting and services
CleanTrackercleantracker.proCleanTracker provides software for planning jobs, managing visits, coordinating staff, and sending invoices for cleaning and facility service companies.
Mena.aimena-ai.ptMena.ai provides clinical intelligence software that combines scheduling, billing and clinical records with an AI assistant that drafts session notes and organizes themes for clinician review.Healthcare
SwiftGuardswiftguard.aiSwiftGuard is an AI receptionist that answers inbound phone calls for plumbing and heating businesses, captures caller details, and books jobs into the user's calendar.AI and machine learning
BilagPilotbilagpilot.noBilagPilot helps accounting firms find booked transactions that lack documentation and collect the missing documents from their clients.Finance and accounting software

The two technologies

GatewayAPI

Email and communications

GatewayAPI is a messaging platform for sending SMS, RCS and email through APIs, with features such as virtual numbers, shortcodes, keywords and number lookup. It is used by businesses to send marketing, transactional and service messages to customers.

Summarized from gatewayapi.com on 9 Nov 2026.

71% of the 7 companies we see using GatewayAPI also show the other.

All 7 companies using GatewayAPI 6 name it as a subprocessor More in Email and communications

Resend

Email and communications

Resend is an email platform for developers that delivers transactional and marketing emails. It is used to send emails through an API, SDKs, or SMTP, along with webhooks, contact management, and analytics.

Summarized from resend.com on 8 Nov 2026.

under 1% of the 1,413 companies we see using Resend also show the other.

All 1,413 companies using Resend 1,048 name it as a subprocessor More in Email and communications

Other pairs

Companies with their own evidence for both.

More with GatewayAPI

Cloudflare7companies

Google5companies

Google Workspace5companies

Next.js5companies

Stripe5companies

More with Resend

Cloudflare1,418companies

Stripe946companies

Google Workspace848companies

Next.js813companies

Vercel764companies

Google683companies

Questions

How many companies use both GatewayAPI and Resend?

5 companies in StrataDB's data have public evidence for both, and 3 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 GatewayAPI and Resend?

Available, CleanTracker, Mena.ai, SwiftGuard and BilagPilot. Each one links to the evidence behind it.

How does StrataDB know a company uses GatewayAPI and Resend?

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 GatewayAPI and Resend

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