Evaluation & Testing

Spammy

Email Spam Filtering Library Built on NLTK

Status
UnmaintainedNo commits in 3328 days.
Last checked
Checked · Oct 13, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Spammy is a Python library for email spam filtering that leverages the Natural Language Toolkit (NLTK) to classify emails as spam or not spam.

Spammy stands out as a lightweight, Python-centric library for spam filtering, leveraging NLTK's capabilities without requiring additional dependencies.

When it fits — and when it doesn’t

A good fit for

  • Projects requiring a lightweight, Python-based solution for email spam filtering

  • Developers looking to integrate spam detection into their applications using NLTK

Look elsewhere if

  • Applications that require real-time processing of large volumes of emails due to potential performance limitations

  • Scenarios where the GPL-3.0 license is not compatible with project requirements

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited support for modern email formats and encodings

    Spammy may not handle MIME types or complex email structures effectively, leading to misclassification of spam.

  2. 02

    Dependence on NLTK can lead to performance bottlenecks

    NLTK's text processing functions are computationally intensive and may slow down real-time spam filtering applications.

  3. 03

    Small community and limited documentation

    The library has a small user base and the documentation lacks examples for advanced use cases, making it hard to troubleshoot issues.

What it does well

  • Built on top of NLTK for robust text processing capabilities

  • Provides a straightforward API for integrating spam filtering into applications

  • Open-source and community-maintained

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Spammy

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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