{"categories":[{"label":"Libraries","url":"https://skillfed.io/packages/category/software-development-libraries/5"},{"label":"Python Modules","url":"https://skillfed.io/packages/category/software-development-libraries-python-modules/9"},{"label":"Email","url":"https://skillfed.io/packages/category/communications-email"}],"enrichment":{"capability":"Detects and extracts original bouncing email addresses from bounce messages, supporting multiple formats including VERP and RFC 3464 (DSN).","skillfed_tags":["email-processing","bounce-handling"],"use_cases":["Mailing list management: automatically process bounce messages to identify and remove non-deliverable addresses","Email delivery monitoring: extract bounced addresses from DSN notifications to track delivery failures","VERP-based bounce tracking: parse variable envelope return path messages to correlate bounces with original recipients","Bulk email systems: filter and categorize bounce messages to separate permanent failures from temporary issues","Mail server integration: build bounce handlers that extract addresses for automated list cleaning"],"what_it_does":"flufl.bounce is a Python library for parsing bounce messages and extracting the original email addresses that triggered delivery failures. It implements heuristics to handle the many different bounce message formats found in real-world mail systems, and provides explicit support for VERP (Variable Envelope Return Path) and RFC 3464 DSN (Delivery Status Notification) formats.\n\nThe library is designed for developers building mail handling systems\u2014particularly mailing list managers and email processing pipelines\u2014where identifying which addresses bounced is essential for list maintenance and delivery monitoring. It requires Python 3.10 or later and depends only on atpublic, making it straightforward to integrate into existing projects.","worth_installing":"Yes. The package is mature (Production/Stable, Mature classifiers), actively maintained, has no known vulnerabilities, and solves a specific problem in email handling with low install friction. It is well-suited for any project that needs to reliably parse bounce messages."},"id":"flufl-bounce","links":{"html":"https://skillfed.io/packages/flufl-bounce","md":"https://skillfed.io/packages/flufl-bounce.md","pypi":"https://pypi.org/project/flufl-bounce/"},"maintenance":{"status":"active"},"meta":{"latest_release":"2026-05-22","license_spdx":null,"license_treatment":"permissive","name":"flufl.bounce","python_support":"supports_current","summary":"Email bounce detectors"},"popularity":{"monthly_downloads":681187,"position":5364,"tier":"top_15000"},"security":{"n_vulnerabilities":0},"version":"5.0.1"}