---
id: mailsuite
version: "2.2.2"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# mailsuite — A Python package for retrieving, parsing, and sending emails

License: permissive · Maintenance: active · Downloads: 98.1K/mo

## What it is and what it does

mailsuite is a Python email abstraction layer that unifies access to multiple mailbox backends—IMAP, Microsoft Graph, Gmail, and local Maildir—under a single MailboxConnection interface. It handles the low-level complexity of each backend's quirks, folder hierarchies, authentication schemes, and protocol differences so you write email logic once and run it against any provider.

Beyond mailbox access, it provides email parsing (extracting attachments with SHA256 hashes, parsing Authentication-Results and DKIM-Signature headers), simplified message creation with attachments and HTML, DKIM signing and verification, and ARC chain sealing and verification. It supports both username/password and OAuth2 authentication, automatic IMAP reconnection, and folder operations (create, rename, move, delete) with consistent error semantics across all backends.

Use it for:

- Build a multi-provider email client or integration that works with Gmail, Microsoft 365, and IMAP servers without backend-specific code.
- Implement DKIM and ARC verification in an email security or archival system to validate sender authenticity and chain-of-custody.
- Monitor shared mailboxes across multiple cloud and on-premises systems using a single polling interface.
- Parse and extract structured data from received emails (headers, attachments, body text) with consistent handling across providers.
- Automate email-based workflows (folder watching, message filtering, forwarding) that work identically on IMAP and cloud backends.

## Worth the install?

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

mailsuite retrieves, parses, and sends emails through a unified interface supporting IMAP, Microsoft Graph, Gmail, and local Maildir, with built-in DKIM and ARC signing and verification.

Yes. mailsuite is actively maintained, permissively licensed, has low install friction, and solves a real problem—unifying email access across fragmented backends. It's suitable for production use if you need multi-provider email handling or DKIM/ARC operations. The optional extras keep the base install lean. No known vulnerabilities.

## Install

pip install mailsuite
uv add mailsuite
poetry add mailsuite

## Installing mailsuite

Before you install: Low friction: pure Python wheel with 9 runtime dependencies including well-established libraries (cryptography, dnspython, imapclient). Active maintenance with a release within the last 2 months. Optional extras for Microsoft Graph and Gmail backends keep the base install lean.

License in practice: Apache-2.0 (permissive) allows commercial use, modification, and distribution with minimal restrictions, making it suitable for proprietary projects.

Quickstart:

pip install mailsuite

from mailsuite.mailbox import MailboxConnection

conn = MailboxConnection('imap.example.com', 'user@example.com', 'password')
messages = conn.fetch_messages('INBOX')

Requires Python 3.9 or later. Optional: msgconvert system package for parsing Microsoft Outlook .msg files; Microsoft Graph or Gmail extras needed for those backends.

Verify before relying:

- Performance characteristics when handling large mailboxes or high message volumes
- Compatibility matrix with specific Exchange/Office 365/Gmail API versions
- Whether IDLE polling refresh interval is configurable on IMAP backends

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 98.1K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

email retrieval and parsing library, IMAP SMTP client abstraction, DKIM signing verification, Microsoft Graph Gmail IMAP, email folder management, ARC authentication chain, mailbox connection abstraction, email-abstraction, dkim-arc, multi-provider

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