Instead of manually managing warmup schedules or guessing the right sending pace — which often leads to emails going to spam or getting blocked — this feature creates a personalized warmup plan based on your contact list and which email providers your audience uses. The system starts with small daily volumes and safely increases them over time to help you avoid deliverability problems when setting up a new domain or scaling your email program.
3. Before You Begin
Before setting up AutoWarmup for your email campaigns, make sure you have:
Administrator access to Settings: You'll need permissions to access Settings > Integrations & Addons to enable the AutoWarmup feature.
Domain authentication records properly configured: Your SPF, DKIM, and DMARC records must be set up and verified in SendX before starting warmup.
Campaign content finalized: Have your email subject lines, content, and sender information ready since you'll be sending real emails during warmup.
4. Step-by-Step Instructions
1. Access Your Settings
Click on your profile icon in the navigation bar.
Select Settings from the drop-down menu.
2. Navigate to Integrations and Add-ons
Inside Settings, click on Add-ons.
Find the Auto Warm-Up option.
Toggle the switch to enable the feature.
4. Select a Campaign
From the navigation bar, click on Campaigns.
Choose the campaign you want to warm up from the drop-down list.
Click to open your selected newsletter.
5. Configure Auto Warm-Up Mode
On the campaign editing page, click on the Schedule page and enable Auto Warm-Up Mode to gradually increase the sending
In the scheduling form, set the Auto Warm-Up Mode to High, Medium, or Low, depending on how quickly you want to increase the sending volume over time.
Once enabled, select send. The Auto Warm-Up feature will automatically adjust your sending volumes for that campaign, ensuring a smooth reputation build-up and better deliverability.
5. Best Practices
Follow these recommendations to maximize your AutoWarmup success and build strong deliverability:
Send valuable content during warmup: Don't use throwaway content. Send real value since engagement metrics directly impact your reputation.
Don't disable mid-process: Once started, let AutoWarmup complete its cycle; stopping early can confuse email providers about your sending patterns.
Track spam complaints closely: Keep complaint rates below 0.1% during warmup by ensuring content relevance and easy unsubscribe options.
Schedule sends during business hours: AutoWarmup works better when emails are sent when recipients are likely to engage.
6. Troubleshooting Common Problems
AutoWarmup is designed to work automatically, but you may encounter some questions or challenges during the process. Here are solutions to help you succeed:
Problem: "I can't find the AutoWarmup option in my Settings."
Solution: Navigate to Settings > Integrations & Addons > Addons tab to locate the AutoWarmup toggle. If it's still not visible, contact your admin.
Problem: "My warmup emails are getting low open rates (below 15%) and I'm worried about my reputation."
Solution: This suggests your contact list may need cleaning before warmup. Pause the campaign, clean your list using SendX's list cleaning feature, and restart with engaged contacts.
Problem: "AutoWarmup seems stuck at a low daily volume even after a week." Solution: The system increases volume based on positive engagement signals. Check your open rates, click rates, and spam complaints. If engagement is poor, the system will intentionally keep volumes low to protect your reputation.
Problem: "I want to pause or stop the warmup process midway through."
Solution: You can disable AutoWarmup Mode in your campaign settings, but this isn't recommended as it may disrupt your reputation-building. Consider the long-term impact before making changes.
7. Next Steps
Once you've successfully set up AutoWarmup, here are additional resources to optimize your email deliverability and campaign performance:
Monitoring Email Deliverability Metrics: Learn how to track and interpret the key metrics that indicate your warmup success.
Personalised email subject line & content to further improve engagement: Learn how to create dynamic email content that adapts to individual contact preferences and demographics in this guide.