PowerMTA Support Forum
- October 18, 2026, 07:50:48 PM
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News:
PowerMTA 6.1r1 is out!!!! Please contact powermta-support@sparkpost.com for a license and download access.
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- List-Unsubscribe header critical for delivery and how we help PMTA users
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Topic: List-Unsubscribe header critical for delivery and how we help PMTA users (Read 706862 times)
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- PowerMTA Support Forum >
- General Category >
- Blogs >
- List-Unsubscribe header critical for delivery and how we help PMTA users