Pool Features
Auto-Rotation
Automatic SMTP rotation distributes load and maintains deliverability across the pool.
How Rotation Works
- Per-Email: Each email may use a different SMTP from the pool
- Health-Based: Higher-scoring SMTPs selected more frequently
- Load-Aware: Busy SMTPs deprioritized automatically
- Failure Recovery: Failed sends retry on different SMTP
Rotation Strategies
| Strategy | Best For |
|---|---|
| Round Robin | Even distribution across all SMTPs |
| Weighted | Favor high-performing SMTPs |
| Random | Maximum unpredictability |
| Sticky Session | Same SMTP per campaign (Pro+) |