What’s the difference between pre-send and post-send testing?
Pre-send testing evaluates emails before deployment: rendering previews, spam scoring, link checking, and accessibility review. It catches problems when fixing is cheap and reputation damage hasn't occurred.
Post-send testing analyzes live email performance: actual **inbox placement**, engagement metrics, and rendering in wild conditions. It reveals how messages actually performed with real recipients.
Both serve different purposes: pre-send prevents problems; post-send validates and optimizes. Comprehensive testing uses both: pre-send catches obvious issues, post-send confirms real-world performance and guides future improvement.
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