---
id: mypy-boto3-workmailmessageflow
version: "1.43.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# mypy-boto3-workmailmessageflow — Type annotations for boto3 WorkMailMessageFlow 1.43.0 service generated with mypy-boto3-builder 8.12.0

License: permissive · Maintenance: active · Downloads: 251.1K/mo

## What it is and what it does

This package is a type stub library that adds static type information for boto3's WorkMailMessageFlow service. It is generated automatically from boto3 service definitions and works with mypy, pyright, VSCode Pylance, PyCharm, Emacs, and Sublime Text to provide IDE autocomplete and catch type errors before runtime.

The package contains no runtime code—it only provides type hints so that your editor and type checker understand the shape of WorkMailMessageFlow client objects, method signatures, and return types. You install it alongside boto3 in your development environment; it does not affect production deployments. It supports Python 3.9 through 3.14 and depends only on typing-extensions.

Use it for:

- Enable IDE autocomplete and inline documentation for WorkMailMessageFlow API calls in VSCode or PyCharm.
- Run mypy or pyright type checking on code that uses boto3 WorkMailMessageFlow without false positives.
- Catch incorrect WorkMailMessageFlow method calls and parameter types during development rather than at runtime.
- Generate explicit type annotations for WorkMailMessageFlowClient objects and return types in your codebase.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides type stubs and annotations for boto3's WorkMailMessageFlow service, enabling static type checking and IDE autocomplete for AWS WorkMail message flow operations.

Yes, if you use boto3's WorkMailMessageFlow service and want static type checking or IDE support. Install friction is minimal, maintenance is active, and the MIT license carries no restrictions. The only caveat is that PyCharm users may experience performance issues with the full stubs; the documentation suggests boto3-stubs-lite as a workaround in that case.

## Install

pip install mypy-boto3-workmailmessageflow
uv add mypy-boto3-workmailmessageflow
poetry add mypy-boto3-workmailmessageflow

## Installing mypy-boto3-workmailmessageflow

Before you install: Low install friction with a single lightweight runtime dependency (typing-extensions). Actively maintained with recent releases; repo shows consistent activity.

License in practice: MIT license permits unrestricted use, modification, and distribution in both open-source and proprietary projects without restriction.

Quickstart:

pip install mypy-boto3-workmailmessageflow

from boto3.session import Session
from mypy_boto3_workmailmessageflow import WorkMailMessageFlowClient

client: WorkMailMessageFlowClient = Session().client("workmailmessageflow")

Requires Python 3.9 or later; boto3 must be installed separately in your environment.

Verify before relying:

- Whether performance impact on PyCharm is significant enough to warrant boto3-stubs-lite as an alternative.
- Exact scope of WorkMailMessageFlow API coverage in this stub version.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 251.1K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

boto3 type annotations, aws workmailmessageflow types, mypy boto3 stubs, type checking aws sdk, boto3 ide autocomplete, static typing boto3, workmailmessageflow client types, type-stubs, boto3, aws

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