Level: Advanced
Seed list testing sends messages to a controlled panel of test accounts across major providers, offering direct, empirical visibility into inbox placement that aggregate metrics alone can't provide.
Seed Accounts Should Span Major Providers
A useful seed list includes test accounts across the major mailbox providers your actual audience uses, since placement behavior varies meaningfully between them.
Test Under Realistic Sending Conditions
Sending seed list tests as part of your actual campaign sends, rather than as an isolated separate test, produces results that more accurately reflect real-world placement.
Use Results to Identify Provider-Specific Patterns
Consistent placement issues concentrated at one specific provider, revealed through seed testing, point toward a provider-specific reputation or configuration issue worth investigating separately.
Next step: Use the SeoWolf's Notepad to document your seed list test results across sends to track placement trends by provider over time.