Does using an ESP guarantee bounce accuracy?
Myth: ESP bounce handling is always accurate.
Reality: Quality varies:
ESP advantages:
Dedicated bounce processing. Large sample size for patterns. Continuous dictionary updates. Professional maintenance.
ESP limitations:
Dictionaries may be outdated. New patterns may be missed. Some classify too aggressively. Others too conservatively.
Verification approach:
Sample audit classifications periodically. Review suppression rates. Investigate unusual patterns. Access raw data when needed.
Sender responsibility:
You own your list quality. ESP is a tool, not absolution. Monitor outcomes, not just trust.
ESPs help but do not guarantee. Verify their work on your data.
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