Cold email deliverability, without the headache

Deliverability isn't luck. It's a set of guardrails applied consistently.

The guardrails that matter

• Send from secondary domains, never your primary.
• Warm every domain for at least two weeks before real volume.
• Cap volume per mailbox and ramp slowly.

Let the system enforce them

Indeel enforces these by default and watches bounce and complaint rates continuously, pausing sends before a problem becomes a blocklist. The result: you focus on the message, not the infrastructure.

For the complete setup, including SPF, DKIM, DMARC, and the complaint thresholds that get you blocked, read the 2026 cold email deliverability checklist, or see how it all runs inside Indeel.