Signals 04 + 06 · Domain Reputation & Authentication

You're Warming Up a Domain and Flying Completely Blind?

Warm-up tools charge $25-50/mo and feel like a black box. InbXr gives you a free dashboard to log daily volumes, track progress, and know exactly when your domain is ready to scale. Warming up correctly is how new domains build Signal 04 (Domain Reputation) and let Signal 06 (Authentication) age into trust.

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Email Service Provider

Daily Volume Target Your goal daily send volume after warm-up is complete

Recommended Warm-up Schedule

Follow this daily volume ramp. Jumping ahead or spiking volume is the #1 reason domains get blacklisted during warm-up.

Day 1-3 20 / day Send only to your most engaged contacts. Get replies if possible.

Day 4-7 50 / day Keep reply rates high. Avoid cold contacts. Run an Inboxer Sender Check to confirm no blacklists.

Day 8-14 100 / day Gradually broaden your list. Monitor bounce rates. Stay under 2%.

Day 15-21 250 / day Your domain is building reputation. Run inbox placement tests to verify delivery.

Day 22-30 500 / day Almost there. If open rates and reply rates are stable, you’re on track.

Day 30+ Full volume Scale to target volume. Continue monitoring blacklists weekly.

Warning signs to pause warm-up: Bounce rate > 3% · Spam complaints > 0.1% · Open rate dropping below 20% · Listed on any blocklist. If any of these happen, pause sending for 48 hours and investigate before continuing.

Log Today's Activity

Daily Send Volume

Warm-up Log

Day	Date	Sent	Cumulative	Placement	Notes

Warm-up Best Practices

Start with your most engaged contacts. Sending to people who open and click signals positive engagement to mailbox providers.

Increase volume gradually. Sudden spikes in volume are a red flag. Follow the schedule above or adjust based on your domain age.

Monitor bounces and complaints. Keep bounce rates under 2% and spam complaints under 0.1%. Pause and clean your list if you exceed these.

Be consistent. Send every day during warm-up. Gaps in sending can reset your reputation progress with some providers.

Authenticate everything first. Make sure SPF, DKIM, and DMARC are properly configured before you start. Use InbXr's Inboxer Sender Check to verify.

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