Email Subscriber List Hygiene & Automated Sunsetting Spec
Boost your open rates and cut your ESP billing bills. Standardized email sunsetting policy and automated suppression workflow logic.
Problem it addresses
Build an open-source email list hygiene and sunsetting toolkit: 1) 3-stage sunset policy (Engagement Warning, Last-Chance Re-engagement, Automated Suppression), 2) example copy templates for the 'Goodbye / Are you still there?' re-engagement sequence, 3) Python audit script (audit_inactives.py) parsing subscriber activity exports, 4) Executive business case slide template justifying list pruning.
Who it is for
PRO operating in high-growth e-commerce, digital publishing, and direct-response marketing across Saudi Arabia, UAE, and Egypt.
What is inside
Key files listed in the README repository architecture:
docs/executive-business-case.mdexamples/clean_output.csvexamples/scrubbed_contacts_sample.csvLICENSEplaybooks/automated-sunset-policy.mdpolicies/enterprise-sunsetting-policy.mdREADME.mdsrc/audit_inactives.pysrc/list_scrubber.pytemplates/last-chance-reengagement-copy.mdtemplates/re-engagement-campaign-ar.mdtests/test_audit.py
How to evaluate and use it
- Read the README first and confirm that the documented problem matches your use case.
- Inspect the listed files to find the data, tools, templates, and tests relevant to your task.
- Follow the repository’s Quick Start and check prerequisites before running commands.
- Compare outputs with documented examples and review limitations before using them in a decision or client workflow.
Quick Start from the README: python -m unittest discover -s tests · python src/audit_inactives.py --help
Scope and limitations
- Inactivity Thresholds: Automatically flags contacts with 0 opens and 0 clicks over 90, 120, or 180 days for progressive re-engagement and sunsetting.
- Hard Bounce vs Soft Bounce Handling: Automatically purges fatal hard bounces (code 5.X.X) while allowing transient soft bounces up to 3 attempts.
- Spam Trap Avoidance: Recovers sender domain reputation by suppressing unengaged subscribers before inbox providers convert dormant addresses into spam traps.
This page summarizes the available documentation; it does not establish performance or business results. Verify data and prerequisites before use.