Deliverability depends on reputation, content, and consistency. If one fails, inbox rate drops.
1. Control bounces
Keeping bounces below 2% is baseline. If it rises, pause and clean the list.
2. Continuous warmup
Do not turn it off when you start selling. Warmup sustains reputation.
3. Adjust volume per domain
If inbox rate drops, reduce volume and recover reputation before scaling again.
4. Review sensitive content
Reduce links, avoid risky words, and use a clear CTA.
Quick checklist
- Bounces < 2%
- Continuous warmup
- Per-domain volume
- Low-risk copy