MailFlat SDKs

Name: MailFlat
Author: mailflat

Official client libraries for MailFlat: email inboxes your code owns, with one-line OTP retrieval. Built for test suites (Selenium, pytest, Playwright) and AI agents.

Addresses are permanent, so a suite does not need a fresh one per run. Only the messages expire, on a retention window you choose.

This repo holds only the open-source SDKs. The MailFlat service itself is closed-source.

Packages

Package	For	Install
`mailflat`	Python	`pip install mailflat`
`@mailflat/sdk`	JavaScript / TypeScript	`npm i @mailflat/sdk`
`mailflat-mcp`	AI assistants (Claude, Cursor) — MCP	`uvx mailflat-mcp`
`@mailflat/ai-sdk`	Vercel AI SDK agents	`npm i @mailflat/ai-sdk`
`mailflat.langchain`	LangChain agents	`pip install "mailflat[langchain]"`
`mailflat-sdk` (Java)	Java / Selenium	via JitPack — see below

Each client is a thin, typed wrapper over the same /api/v1 Agent API, so they behave identically. Authenticate with your account key (mf_live_…) from the dashboard (Agents → API keys).

Java / Selenium (JitPack)

JitPack derives the groupId from the GitHub owner. This repo moved to the official MailFlat account in August 2026, so releases from v0.4.4 on publish as com.github.MailFlat:mailflat-sdks. Earlier versions still resolve under the old coordinate com.github.onderyentar21:mailflat-sdks; the old repo stays up for them. The client is moving to Maven Central (net.mailflat) next, which ends the owner coupling.

xml

<repositories>
  <repository><id>jitpack.io</id><url>https://jitpack.io</url></repository>
</repositories>

<dependency>
  <groupId>com.github.MailFlat</groupId>
  <artifactId>mailflat-sdks</artifactId>
  <version>v0.7.0</version>
</dependency>

java

MailFlat mf = new MailFlat("mf_live_…");
Inbox inbox = mf.create("signup");
driver.findElement(By.id("email")).sendKeys(inbox.address());
String otp = inbox.waitForOtp(30);          // polls until the code arrives
driver.findElement(By.id("code")).sendKeys(otp);

Quick examples

Python

python

from mailflat import MailFlat
mf = MailFlat(api_key="mf_live_…")
inbox = mf.create(label="signup")
otp = inbox.wait_for_otp(timeout=30)

JavaScript / TypeScript

import { MailFlat } from "@mailflat/sdk";
const mf = new MailFlat({ apiKey: process.env.MAILFLAT_API_KEY });
const inbox = await mf.create({ label: "signup" });
const otp = await inbox.waitForOtp({ timeout: 30000 });