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Technologies / Lob / OpenAI

Companies using Lob and OpenAI

19 companies in our data have public evidence for both Lob and OpenAI, and 17 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.

19companies use both
66%of Lob users
1%of OpenAI users
17name both as subprocessors

Companies using one are 4.7 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

CompanyLobOpenAI
airSlateairslate.comairSlate builds automation products for editing and signing documents, automating business processes, and acquiring new customers.Productivity and collaboration
AWeberaweber.comAWeber provides email marketing, automation, landing pages, and ecommerce tools.Marketing
Cartacarta.comCarta provides software for managing equity, fund administration, and legal and compliance workflows for private capital.Finance and accounting software
Communitrakcommunitrak.comCommunitrak provides all-in-one software for managing HOAs online, including payments, messaging, violation tracking, a website builder, amenity reservations, and access control.
DocHubdochub.comDocHub provides online tools to edit, sign, share, and create forms for PDF documents.Productivity and collaboration
Fundraise Upfundraiseup.comFundraise Up provides an AI-powered fundraising platform for nonprofits, including checkout, payment methods, peer-to-peer fundraising, and donor management tools.
Healia Healthhealiahealth.comHealia provides a Health Reimbursement Arrangement that lets employers cover premiums and out-of-pocket costs for employees, spouses, and dependents who enroll in a spouse's health plan.Healthcare
Heritage Passportheritagepassport.coHeritage Passport helps people find out whether their family line qualifies for citizenship by descent in 42 countries and prepares the paperwork to prove it.
Instapageinstapage.comInstapage provides an AI-powered platform for creating landing pages and websites, with tools for A/B testing, personalization, and email marketing.Marketing
Januaryjanuary.comJanuary uses AI to collect debts for creditors by engaging consumers across voice, SMS, and chat.AI and machine learningFintech
Koolaykoolay.comKoolay provides a nonprofit software platform combining donor CRM, website, donations, events, grant discovery, AI grant writing, and e-sign, plus done-for-you grant writing services.
Lunoslunos.aiLunos provides AI agents that automate accounts receivable and accounts payable tasks such as collections, dispute management, cash application, and payment orchestration.AI and machine learningFinance and accounting software
Modern Treasurymoderntreasury.comModern Treasury provides an API for onboarding customers, opening accounts, and moving money across fiat and stablecoins with compliance and ledgering built in.Payments
NMInmi.comNMI provides an embedded payments platform that includes a payment gateway, merchant onboarding and underwriting tools, and value-added services.Payments
Rad AIradai.comRad AI provides AI software for radiology reporting, impressions, and follow-up management.AI and machine learningHealthcare
SignNowsignnow.comairSlate SignNow provides electronic signature and document workflow tools that let users sign, send, track, and store documents from any device, along with templates, fillable fields, and an API for embedding eSignatures in other apps.Productivity and collaboration
US Legal Formsuslegalforms.comUS Legal Forms provides an online library of state-specific legal forms.Legal
Yubicoyubico.comYubico makes hardware security keys and related products for authentication and access protection.CybersecurityIdentity and access
AI-STORMSai-storms.comAI-STORMS provides a storm-response workspace that connects weather signals, property research, owner data, eligibility review, approved outreach, and outcome tracking.

The two technologies

Lob is a direct mail platform that lets businesses create, personalize, route, and fulfill physical mail campaigns. It is used to send automated direct mail, with printing and delivery handled through its Print Delivery Network.

Summarized from lob.com on 8 Nov 2026.

66% of the 29 companies we see using Lob also show the other.

All 29 companies using Lob26 name it as a subprocessor

OpenAI

AI and LLM providers

OpenAI is a platform that provides an API for building with OpenAI models. It is used to access models, tools, and services for tasks such as text generation, image generation, audio, and agents.

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

1% of the 3,342 companies we see using OpenAI also show the other.

All 3,342 companies using OpenAI2,560 name it as a subprocessorMore in AI and LLM providers

Industries

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

Productivity and collaboration3AI and machine learning3Marketing2Finance and accounting software2Healthcare2Payments2

Other pairs

Companies with their own evidence for both.

More with Lob

Cloudflare29companiesAmazon Web Services22companiesGoogle Workspace22companiesTwilio19companiesGoogle15companiesStripe14companies

More with OpenAI

Cloudflare3,322companiesGoogle Workspace2,504companiesAnthropic2,019companiesAmazon Web Services1,906companiesStripe1,674companiesGoogle1,571companies

Questions

How many companies use both Lob and OpenAI?

19 companies in StrataDB's data have public evidence for both, and 17 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 Lob and OpenAI?

airSlate, AWeber, Carta, Communitrak and DocHub, and 14 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Lob and OpenAI?

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 Lob and OpenAI

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
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