⚠️ High Priority

SendGrid IP Warmup Failed: Recovery & Restart Guide for SendGrid

Your SendGrid dedicated IP warmup failed or was blocked

Address within 24 hours.

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Check SendGrid warmup status:

In SendGrid Settings > IP Addresses, check the warmup status of your dedicated IP

If blocked or paused, check SendGrid alerts and emails

Check SendGrid Analytics for bounce and complaint rates during warmup

What Could Be Causing This?

SendGrid Warmup Plan Exceeded (Volume Too High)

Most Common

InboxEagle Detects This ✓

If you scaled too fast during warmup, SendGrid blocks the IP.

How to confirm:

Review SendGrid sending history. Did you exceed the warmup schedule?

High Bounce or Complaint During SendGrid Warmup

Most Common

InboxEagle Detects This ✓

SendGrid monitors warmup metrics closely. High bounce/complaint rates trigger blocking.

How to confirm:

Check SendGrid Analytics for the warmup period. Are bounce or complaint rates elevated?

Fix Playbook

Step 1: Contact SendGrid Support for Warmup Reset

DaysImpact: High

Contact SendGrid support: "My warmup was blocked. Can you reset it?"
Provide explanation of root cause (volume spike, bad list, etc.)
SendGrid can reset warmup and let you restart (usually 24-48 hours)
Follow the new warmup schedule strictly

SendGrid-Specific Note:

SendGrid support is responsive to warmup issues. They can reset and guide restart.

Step 2: Restart Warmup with Strict Volume Controls

DaysImpact: High

After SendGrid resets warmup, follow their schedule exactly
Start small: 5K/day for 2-3 days
Increase gradually: 10K, 20K, 50K over 7-10 days
Monitor bounce and complaint rates daily — stay below SendGrid thresholds

SendGrid-Specific Note:

SendGrid provides explicit warmup schedules to follow — adhere to them.

Prevention Checklist

Follow SendGrid warmup schedule strictly
Only send to validated, engaged lists during warmup
Monitor SendGrid Analytics during warmup
Don't exceed the proposed schedule

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Frequently Asked Questions

How long does SendGrid warmup take?

7-14 days depending on target volume. Follow SendGrid's provided schedule — don't rush.

Can I request to skip warmup in SendGrid?

SendGrid requires warmup for all new dedicated IPs. No exceptions. Follow the schedule.