--- title: "Flexmail API: connect it to your AI chat ยท Hypamoon" description: "The Flexmail API is open and signs in with basic auth. What your AI chat can build with it on Hypamoon, how it connects, and the sources we checked." url: https://hypamoon.com/connect-to/flexmail --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Flexmail Email marketing # Connect Flexmail to Hypamoon Yes. Flexmail has a public, versioned API and you create the key yourself, so your chat can write the adapter. Open ## The check Three questions about the API of Flexmail, answered from its own docs. **Public API docs**\ **Yes.** Flexmail publishes REST API documentation, but the page loads through JavaScript and could not be read. [Read the docs](https://api.flexmail.eu/documentation/) **A key you create yourself**\ **Yes.** Personal access tokens are managed in the Flexmail application under Settings, API, Personal access tokens, and used with your account ID as Basic auth. [api.flexmail.eu](https://api.flexmail.eu/documentation/) **Versions or a changelog**\ **Yes.** The docs have an API contract with versioning and deprecation sections; the spec is version 1.2.0. [api.flexmail.eu](https://api.flexmail.eu/documentation/) **How it signs in**\ HTTP Basic with your account ID as username and a personal access token from Settings, API as password. **Webhooks**\ **Not confirmed.** **Hosting**\ Cloud ## What you can build Add new customers to the right Flexmail list with their interests, and pull campaign results into your own report. Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Flexmail. API docs: https://api.flexmail.eu/documentation/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Flexmail.%20API%20docs%3A%20https%3A%2F%2Fapi.flexmail.eu%2Fdocumentation%2F.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 7 November 2026. - [api.flexmail.eu/documentation/](https://api.flexmail.eu/documentation/) Flexmail is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Flexmail. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in email marketing - [**ActiveCampaign** Open](https://hypamoon.com/connect-to/activecampaign) - [**Brevo** Open](https://hypamoon.com/connect-to/brevo) - [**Campaign Monitor** Open](https://hypamoon.com/connect-to/campaign-monitor) - [**Constant Contact** Open](https://hypamoon.com/connect-to/constant-contact) - [**Customer.io** Open](https://hypamoon.com/connect-to/customer-io) - [**Klaviyo** Open](https://hypamoon.com/connect-to/klaviyo) - [**Laposta** Open](https://hypamoon.com/connect-to/laposta) - [**Mailchimp** Open](https://hypamoon.com/connect-to/mailchimp) - [**MailerLite** Open](https://hypamoon.com/connect-to/mailerlite) - [**Marketo Engage** Open](https://hypamoon.com/connect-to/marketo-engage) - [**Omnisend** Open](https://hypamoon.com/connect-to/omnisend) - [**Salesforce Account Engagement (Pardot)** Open](https://hypamoon.com/connect-to/salesforce-account-engagement) - [**Spotler Mail+** Open](https://hypamoon.com/connect-to/spotler-mail-plus) - [**CleverReach** Open](https://hypamoon.com/connect-to/cleverreach) - [**Copernica** Open](https://hypamoon.com/connect-to/copernica) - [**Actito** Open](https://hypamoon.com/connect-to/actito) - [**Deployteq** Unknown](https://hypamoon.com/connect-to/deployteq) - [**Mailjet** Open](https://hypamoon.com/connect-to/mailjet) - [**GetResponse** Open](https://hypamoon.com/connect-to/getresponse) - [**Kit (ConvertKit)** Open](https://hypamoon.com/connect-to/kit) - [**Drip** Open](https://hypamoon.com/connect-to/drip) - [**Dotdigital** Open](https://hypamoon.com/connect-to/dotdigital) - [**rapidmail** Open](https://hypamoon.com/connect-to/rapidmail) - [**Twilio SendGrid** Open](https://hypamoon.com/connect-to/sendgrid) - [**Postmark** Open](https://hypamoon.com/connect-to/postmark) - [**Mailgun** Open](https://hypamoon.com/connect-to/mailgun) - [**Leat (formerly Piggy)** Open](https://hypamoon.com/connect-to/leat) - [**Feefo** Open](https://hypamoon.com/connect-to/feefo) - [**WebwinkelKeur** Open](https://hypamoon.com/connect-to/webwinkelkeur) - [**Feedback Company** Unknown](https://hypamoon.com/connect-to/feedback-company) - [**SAP Emarsys** Open](https://hypamoon.com/connect-to/emarsys) - [**Inxmail** Open](https://hypamoon.com/connect-to/inxmail) - [**Sarbacane** Unknown](https://hypamoon.com/connect-to/sarbacane) - [**lemlist** Unknown](https://hypamoon.com/connect-to/lemlist) - [**Woodpecker** Possible](https://hypamoon.com/connect-to/woodpecker) [All 1094 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Flexmail? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=flexmail) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~flexmail#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~flexmail#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)