What is the ISP learning curve for new senders?
New senders face a learning curve with ISPs:
Initial scrutiny: Unknown senders get more inspection. Placement may be conservative.
Warming period: Gradual volume increase allows reputation to build. Sudden volume from new sender triggers suspicion.
Signal accumulation: Positive engagement, clean bounces, no complaints gradually improve standing.
Time factor: Reputation takes weeks or months to establish. Patience required.
Rushing the process backfires. Start small, prove trustworthiness, scale gradually.
New ships in the harbor earn trust through consistent, reliable behavior over time.
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