How do I monitor progress during warmup?

Warmup monitoring protocol:

Daily metrics:

Open rate (should be strong for engaged segments)

Bounce rate (should stay below 2%)

Complaint rate (should stay below 0.1%)

Postmaster tools:

Gmail Postmaster reputation

Microsoft SNDS status

Check daily during warmup

Warning signs requiring pause:

Bounce rate exceeds 2%

Complaint rate exceeds 0.3%

Postmaster reputation declines

Blocklist appearance

Success indicators:

Stable or improving open rates

Consistent delivery

Postmaster tools stable or improving

Document metrics daily to track trajectory.

Constant instrument monitoring during the voyage. Adjust course at first sign of trouble.