Kill the Newsletter! is a free, open‑source service that transforms email newsletters into Atom feeds, letting you read them in your favourite feed reader instead of cluttering your inbox.

📬 Generates a unique email address for each newsletter subscription

🔄 Converts incoming emails into Atom feed entries

📰 Subscribe to newsletters directly in your feed reader

⚡ Lightweight, simple, and privacy‑friendly

🌐 Web‑based tool, no installation required

🤝 Community‑driven, open‑source project

Perfect for: Users who want to declutter their inbox and manage newsletters alongside other feeds.

Mail‑Tester is a free web tool that lets you test the quality of your emails by analyzing their spam score. It helps identify issues that may prevent your messages from reaching inboxes.

🔍 Get a temporary email address to send your test message

📊 Receive a detailed report with a spam score (0–10)

⚡ Checks SPF, DKIM, DMARC, and DNS records for proper setup

🛡️ Detects blacklists and spam‑triggering content in your email

🖥️ Simple, web‑based interface – no installation required

🤝 Built by email software engineers, widely trusted by marketers and sysadmins

Perfect for: Marketers, developers, and sysadmins who want to ensure their emails avoid spam filters and reach recipients.