Technologies / Email and communications / GatewayAPI
Companies listing GatewayAPI as a subprocessor
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.
Seen in6 subprocessor lists3 privacy policies
Companies listing GatewayAPI as a subprocessor
Subprocessor listPrivacy policyWebsiteJob postings
| Company | Evidence |
|---|---|
A company can count under more than one kind of evidence. Our coverage is partial, so this is not everyone using GatewayAPI.
Questions
How many companies list GatewayAPI as a subprocessor?
6 companies in StrataDB's data name GatewayAPI in their own subprocessor list. Our coverage is partial, so the real number is higher.
Which companies list GatewayAPI as a subprocessor?
Available, CleanTracker, Fourth, Mena.ai and Ordicall FlexCo, and 1 more company. Each one links to the evidence behind it.
How does StrataDB know a company uses GatewayAPI?
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.
Build your list of GatewayAPI customers
See every company we hold evidence for, with its source, and get an alert when a company adds or drops GatewayAPI.
- 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