# Directory (filtered) Home > Browse > Directory 115 sites · 508 category unknown Filters combine: different facets must all match; values within one facet are alternatives. ## Capability - MCP — 115 - Markdown — 131 - [Endpoint (MCP or API catalog)](https://knowngood.sh/directory.md?category=email-messaging) (selected) — 115 - WebMCP — 116 ## Can act - Agent can act — 51 ## Checks passed - 5 of 5 — 3 - 4 of 5 — 84 - 3 of 5 — 15 - 2 of 5 — 12 - 1 of 5 — 1 ## Type - documentation — 75 - saas — 32 - tool — 4 - ecommerce — 2 - business — 1 - community — 1 ## Country - BR — 2 - US — 2 - CA — 1 - DK — 1 - FI — 1 - PH — 1 - SA — 1 - unknown — 106 ## Category - AI agents — 1,500 - SDKs and API clients — 920 - blockchain and web3 — 756 - analytics and observability — 662 - programming languages and frameworks — 637 - digital products — 630 - payments — 576 - health — 520 - medical aesthetics — 456 - beauty and personal care products — 427 - productivity and documents software — 408 - security and identity — 406 - build and test tooling — 395 - cloud and hosting — 400 - search and data APIs — 387 - conversational and voice AI — 378 - developer platforms — 372 - online courses — 373 - technology — 370 - SEO — 351 - arts and culture — 345 - workflow automation software — 334 - lifestyle and personal — 332 - community and nonprofits — 331 - fashion and clothing — 322 - marketing software — 308 - financial services — 312 - web design and development — 309 - furniture and home decor — 303 - construction and roofing — 287 - extensions and plugins — 287 - gaming — 287 - databases and storage — 282 - CRM and sales software — 277 - news and current affairs — 278 - travel — 269 - digital marketing agencies — 265 - food and drink retail — 253 - accounting and invoicing software — 250 - tours and activities — 250 - trading and investing platforms — 245 - automotive — 243 - IT services and cybersecurity — 241 - deals and discounts — 238 - sports — 236 - weight loss clinics — 236 - schools and language learning — 233 - [email and messaging](https://knowngood.sh/directory.md?has=endpoint) (selected) — 115 - industrial and trade supplies — 230 - food and cooking — 227 - business consulting — 225 - medical clinics — 224 - real estate — 224 - parenting and family — 218 - ecommerce infrastructure — 217 - perfume and fragrance — 216 - restaurants and cafes — 216 - jobs and recruiting — 210 - music — 206 - conferences and training events — 205 - generative media — 195 - flowers and gifts — 194 - weddings and event services — 194 - software development services — 190 - hotels and accommodation — 186 - wellness and spa — 183 - customer support software — 180 - travel agencies and booking — 182 - fitness — 178 - embedded devices and firmware — 174 - hair and beauty salons — 174 - jewellery and watches — 173 - dental care — 172 - beauty — 171 - electronics — 170 - insurance — 170 - parking and transport services — 169 - scheduling and events software — 166 - AI consulting agencies — 165 - internet and telecom providers — 165 - legal services — 163 - photography — 161 - cleaning services — 159 - auto sales and service — 158 - faith and religion — 155 - auto parts — 153 - medical and health supplies — 150 - car rental — 144 - pet supplies — 143 - plumbing and HVAC — 143 - moving and storage — 141 - pharmacies — 136 - accounting and tax services — 133 - dermatology — 133 - e-signatures — 133 - sports and outdoor equipment — 130 - catering and food services — 126 - tattoo studios — 124 - pest control — 123 - sports clubs and organisations — 123 - senior care — 122 ## Platform - mintlify — 80 - unknown — 35 ## Verified within Of the latest check, 2026-08-28. - 7 days — 115 - 30 days — 115 - 90 days — 115 ## Sites — page 1 of 2 - [Generect](https://knowngood.sh/site/docs.generect.com.md) — docs.generect.com · documentation · country unknown · 5 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Sequenzy](https://knowngood.sh/site/www.sequenzy.com.md) — www.sequenzy.com · saas · country unknown · 5 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [mailfixture](https://knowngood.sh/site/mailfixture.com.md) — mailfixture.com · saas · country unknown · 5 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [OpenMail](https://knowngood.sh/site/docs.openmail.sh.md) — docs.openmail.sh · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Wapi.js](https://knowngood.sh/site/javascript.wapikit.com.md) — javascript.wapikit.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Broodnet](https://knowngood.sh/site/broodnet.com.md) — broodnet.com · saas · country unknown · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Siren](https://knowngood.sh/site/docs.trysiren.io.md) — docs.trysiren.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Central de Ajuda](https://knowngood.sh/site/help.wizebot.com.br.md) — help.wizebot.com.br · documentation · BR · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Amplemarket API](https://knowngood.sh/site/docs.amplemarket.com.md) — docs.amplemarket.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Minimo Docs](https://knowngood.sh/site/docs.minimo.it.md) — docs.minimo.it · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Zavu](https://knowngood.sh/site/docs.zavu.dev.md) — docs.zavu.dev · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [PostStack](https://knowngood.sh/site/poststack.dev.md) — poststack.dev · saas · FI · 4 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Summate](https://knowngood.sh/site/docs.summate.io.md) — docs.summate.io · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Feather](https://knowngood.sh/site/docs.featherhq.com.md) — docs.featherhq.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Orsay Docs](https://knowngood.sh/site/docs.orsay.ai.md) — docs.orsay.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Notifuse Documentation](https://knowngood.sh/site/docs.notifuse.com.md) — docs.notifuse.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [IndiePitcher](https://knowngood.sh/site/docs.indiepitcher.com.md) — docs.indiepitcher.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Privy Knowledge Base](https://knowngood.sh/site/help.privy.com.md) — help.privy.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Waterfall.io API Documentation](https://knowngood.sh/site/docs.waterfall.io.md) — docs.waterfall.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [CrunchzApp](https://knowngood.sh/site/docs.crunchz.app.md) — docs.crunchz.app · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Conversales ai](https://knowngood.sh/site/docs.conversales.in.md) — docs.conversales.in · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Transmit](https://knowngood.sh/site/docs.transmit.dev.md) — docs.transmit.dev · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Curious Mints](https://knowngood.sh/site/guides.curiousmints.com.md) — guides.curiousmints.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Dialbox](https://knowngood.sh/site/dialbox.us.md) — dialbox.us · saas · US · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [EmailBison Docs](https://knowngood.sh/site/docs.emailbison.com.md) — docs.emailbison.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [docs](https://knowngood.sh/site/docs.kurrier.io.md) — docs.kurrier.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Penbox Documentation](https://knowngood.sh/site/docs.penbox.io.md) — docs.penbox.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [myconf.it](https://knowngood.sh/site/myconf.it.md) — myconf.it · tool · country unknown · 4 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Starter Kit](https://knowngood.sh/site/docs.videosupport.io.md) — docs.videosupport.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [ProBase Docs](https://knowngood.sh/site/docs.probaseapp.com.md) — docs.probaseapp.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Nedzo](https://knowngood.sh/site/docs.nedzo.ai.md) — docs.nedzo.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Does My Email Work](https://knowngood.sh/site/doesmyemail.work.md) — doesmyemail.work · tool · country unknown · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [AI Inbx Docs](https://knowngood.sh/site/docs.aiinbx.com.md) — docs.aiinbx.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Paubox API Docs](https://knowngood.sh/site/docs.paubox.com.md) — docs.paubox.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Resend](https://knowngood.sh/site/resend.com.md) — resend.com · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Unosend](https://knowngood.sh/site/docs.unosend.co.md) — docs.unosend.co · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [MigmaAI](https://knowngood.sh/site/docs.migma.ai.md) — docs.migma.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Amisend](https://knowngood.sh/site/docs.amisend.com.md) — docs.amisend.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Starleads api docs](https://knowngood.sh/site/docs.starleads.co.md) — docs.starleads.co · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [ContactSwing Docs](https://knowngood.sh/site/docs.contactswing.ai.md) — docs.contactswing.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Bouncer](https://knowngood.sh/site/docs.usebouncer.com.md) — docs.usebouncer.com · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [SendKit](https://knowngood.sh/site/docs.sendkit.dev.md) — docs.sendkit.dev · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Prelude Docs](https://knowngood.sh/site/docs.prelude.so.md) — docs.prelude.so · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Z-API Docs](https://knowngood.sh/site/developer.z-api.io.md) — developer.z-api.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Sanitize Email API Docs](https://knowngood.sh/site/docs.sanitizeemail.com.md) — docs.sanitizeemail.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Rasayel](https://knowngood.sh/site/docs.rasayel.io.md) — docs.rasayel.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Kapso Documentation](https://knowngood.sh/site/docs.kapso.ai.md) — docs.kapso.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Cleariflow API](https://knowngood.sh/site/docs.cleariflow.com.md) — docs.cleariflow.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Simple AI](https://knowngood.sh/site/docs.usesimple.ai.md) — docs.usesimple.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Fax.Plus API](https://knowngood.sh/site/apidoc.fax.plus.md) — apidoc.fax.plus · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Apten](https://knowngood.sh/site/docs.apten.ai.md) — docs.apten.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [TruFlow AI](https://knowngood.sh/site/docs.truflow.ai.md) — docs.truflow.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Email Testing For Developers](https://knowngood.sh/site/smtp.dev.md) — smtp.dev · saas · country unknown · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Peerlist Help Center](https://knowngood.sh/site/help.peerlist.io.md) — help.peerlist.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [useSend](https://knowngood.sh/site/docs.usesend.com.md) — docs.usesend.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Mailblock Documentation](https://knowngood.sh/site/docs.mailblock.de.md) — docs.mailblock.de · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Hypersender](https://knowngood.sh/site/docs.hypersender.com.md) — docs.hypersender.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [toSend](https://knowngood.sh/site/tosend.com.md) — tosend.com · saas · country unknown · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Poku Docs](https://knowngood.sh/site/docs.pokulabs.com.md) — docs.pokulabs.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Proofy](https://knowngood.sh/site/docs.proofy.io.md) — docs.proofy.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [AutoSend Documentation](https://knowngood.sh/site/docs.autosend.com.md) — docs.autosend.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [ManyPI Docs](https://knowngood.sh/site/docs.manypi.com.md) — docs.manypi.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [DeBounce API](https://knowngood.sh/site/developers.debounce.com.md) — developers.debounce.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Dialbox](https://knowngood.sh/site/dialbox.ca.md) — dialbox.ca · saas · CA · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Resend](https://knowngood.sh/site/resend-staging.com.md) — resend-staging.com · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Meseji Documentation](https://knowngood.sh/site/docs.meseji.app.md) — docs.meseji.app · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Martin](https://knowngood.sh/site/docs.trymartin.com.md) — docs.trymartin.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [EuAtendo API Whats Delphi](https://knowngood.sh/site/doc.apicomponente.com.br.md) — doc.apicomponente.com.br · documentation · BR · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [MessageDesk Support Docs](https://knowngood.sh/site/docs.messagedesk.com.md) — docs.messagedesk.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Surge](https://knowngood.sh/site/docs.surge.app.md) — docs.surge.app · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Contiguity](https://knowngood.sh/site/docs.contiguity.com.md) — docs.contiguity.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [DMARCeye Docs](https://knowngood.sh/site/docs.dmarceye.com.md) — docs.dmarceye.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Lettr](https://knowngood.sh/site/docs.lettr.com.md) — docs.lettr.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Connectly](https://knowngood.sh/site/docs.connectly.ai.md) — docs.connectly.ai · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Enrichley Docs](https://knowngood.sh/site/docs.enrichley.io.md) — docs.enrichley.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Heymarket API Documentation](https://knowngood.sh/site/developers.heymarket.com.md) — developers.heymarket.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [TerraReach Documentation](https://knowngood.sh/site/docs.terrareach.com.md) — docs.terrareach.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Mailrith](https://knowngood.sh/site/mailrith.com.md) — mailrith.com · saas · country unknown · 4 of 5 · WebMCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [SendPost Docs](https://knowngood.sh/site/docs.sendpost.io.md) — docs.sendpost.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [mintlify](https://knowngood.sh/site/help.convertalk.com.md) — help.convertalk.com · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [MailCare Documentation](https://knowngood.sh/site/docs.mailcare.io.md) — docs.mailcare.io · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Sendrealm Documentation](https://knowngood.sh/site/docs.sendrealm.com.md) — docs.sendrealm.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Stoked](https://knowngood.sh/site/get.stokedhq.com.md) — get.stokedhq.com · saas · country unknown · 4 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [emailr_](https://knowngood.sh/site/docs.emailr.dev.md) — docs.emailr.dev · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Zenzap](https://knowngood.sh/site/docs.zenzap.co.md) — docs.zenzap.co · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: yes · verified 2026-08-23 - [Hatch Documentation](https://knowngood.sh/site/docs.usehatchapp.com.md) — docs.usehatchapp.com · documentation · country unknown · 4 of 5 · MCP, Markdown, llms.txt · can act: no · verified 2026-08-23 - [Customer.io](https://knowngood.sh/site/customer.io.md) — customer.io · saas · country unknown · 4 of 5 · MCP, Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-22 - [Customer.io Docs](https://knowngood.sh/site/docs.customer.io.md) — docs.customer.io · documentation · country unknown · 3 of 5 · WebMCP, Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Sendmux](https://knowngood.sh/site/sendmux.ai.md) — sendmux.ai · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [Gratis Dansk Chat & Chatrum med Avatarer](https://knowngood.sh/site/www.skyskraber.dk.md) — www.skyskraber.dk · community · DK · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [mailX](https://knowngood.sh/site/themailx.com.md) — themailx.com · tool · country unknown · 3 of 5 · MCP, Markdown, OpenAPI · can act: no · verified 2026-08-23 - [Maito](https://knowngood.sh/site/getmaito.com.md) — getmaito.com · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [FormsFort](https://knowngood.sh/site/www.formsfort.com.md) — www.formsfort.com · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Linq](https://knowngood.sh/site/linqapp.com.md) — linqapp.com · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [OpenMail](https://knowngood.sh/site/openmail.sh.md) — openmail.sh · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: no · verified 2026-08-23 - [تطوير الحقائب التدريبية](https://knowngood.sh/site/d-tb.org.md) — d-tb.org · ecommerce · SA · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Mailcoach](https://knowngood.sh/site/www.mailcoach.app.md) — www.mailcoach.app · saas · country unknown · 3 of 5 · Markdown, OpenAPI · can act: yes · verified 2026-08-23 - [AgentSIM](https://knowngood.sh/site/agentsim.dev.md) — agentsim.dev · saas · US · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [Dreamlit AI](https://knowngood.sh/site/dreamlit.ai.md) — dreamlit.ai · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 - [JetEmail](https://knowngood.sh/site/jetemail.com.md) — jetemail.com · saas · country unknown · 3 of 5 · Markdown, llms.txt, OpenAPI · can act: yes · verified 2026-08-23 Next: https://knowngood.sh/directory.md?category=email-messaging&has=endpoint&page=2 HTML: https://knowngood.sh/directory?category=email-messaging&has=endpoint