---
id: secure-smtplib
version: "0.1.1"
license: UNKNOWN
license_treatment: unclear
maintenance: abandoned
---

# secure-smtplib — Secure SMTP subclasses for Python 2

License: unclear · Maintenance: abandoned · Downloads: 426.3K/mo

## What it is and what it does

secure-smtplib is a set of SMTP subclasses designed to add certificate validation to Python's standard smtplib, specifically for TLS/SSL connections. It was built to address the need to verify CA certificates when establishing secure SMTP connections.

The package has been unmaintained since 2015-04-07 and targets Python 2. It carries no known security vulnerabilities but offers no active development, documentation, or compatibility assurance for modern Python environments. The license status is unclear, adding legal risk to adoption.

Use it for:

- Legacy Python 2 systems still requiring secure SMTP with explicit CA certificate validation.
- Auditing or understanding how to add certificate verification to SMTP connections in older codebases.
- Historical reference for SMTP security patterns in early Python implementations.

## Worth the install?

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

Provides secure SMTP subclasses with TLS/SSL certificate validation for Python 2, extending the standard smtplib to verify CA certificates.

No. The package is abandoned, targets Python 2, has an unclear license, and no known vulnerabilities. Modern Python's smtplib already provides robust TLS/SSL support. Use the standard library or a maintained alternative instead.

## Install

pip install secure-smtplib
uv add secure-smtplib
poetry add secure-smtplib

## Installing secure-smtplib

Before you install: Package has been abandoned since its only release on 2015-04-07, with no subsequent maintenance over 4147 days. Low install friction but no active support.

License in practice: License is marked UNKNOWN with no SPDX identifier, creating legal uncertainty about usage rights and obligations for anyone incorporating this code.

Quickstart:

pip install secure-smtplib
import secure_smtplib
# Use secure_smtplib.SMTP or secure_smtplib.SMTP_SSL with ca_cert parameter

Package targets Python 2; compatibility with modern Python versions is unspecified.

Verify before relying:

- Whether the package actually works with any currently-maintained Python version despite Python 2 targeting.
- What specific certificate validation improvements it provides over modern smtplib's built-in TLS support.
- Whether the unclear license permits commercial or derivative use.

## Package facts

- License: UNKNOWN (unclear)
- Python support: unspecified
- Install friction: low
- Maintenance: abandoned
- Downloads: 426.3K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

secure smtp tls ssl, smtp certificate validation, smtplib ca cert verify, python smtp ssl tls, secure email smtp python, smtp certificate authority check, validated smtp connection, legacy, python2-only, abandoned

[View on SkillFed](https://skillfed.io/packages/secure-smtplib) · [View on PyPI](https://pypi.org/project/secure-smtplib/)