Boosting Email Deliverability: A Step-by-Step Strategy Using MailWizz and Warmupinbox

In today's digital marketing landscape, email deliverability is a critical aspect of any email marketing strategy. With so many emails being sent daily, ensuring that your emails land in the recipient's inbox rather than the spam folder requires a carefully planned approach. If you're using tools like MailWizz for bulk email sending and Warmupinbox to build your email reputation, here’s how to effectively combine them for optimized results.

1. The Importance of Warming Up Your Domain with Warmupinbox

Before jumping into large-volume email campaigns, it’s essential to warm up your domain. A new or inactive domain without a history of email sending is more likely to trigger spam filters. Using a tool like Warmupinbox allows you to gradually build your sending reputation by sending emails at lower volumes, which gradually increases over time.

Here’s how the Warmupinbox process works:

• Gradual Increase in Email Volume: Warmupinbox sends emails from your domain to trusted inboxes, increasing volume gradually and interacting with them (opens, replies, etc.). This mimics natural, organic email behavior, which ISPs (Internet Service Providers) use to evaluate your sender reputation.
• Engagement Metrics: The tool ensures your emails are opened and engaged with, which improves your domain's reputation. We aim for a 70% delivery rate or more in Warmupinbox before proceeding to higher volumes via MailWizz.
• Monitor Domain Reputation: As Warmupinbox operates, you can monitor your domain’s reputation and check for any blacklisting issues to fix them before scaling.

2. Scaling Up with MailWizz Once Your Domain is Warm

Once you have successfully warmed up your domain and reached a 70%+ delivery rate in Warmupinbox, it's time to start scaling your email campaigns with MailWizz. Here’s how to do it effectively:

a. Gradual Volume Increase

• Week 2: Start with moderate volumes, focusing on sending a total of 20,088 emails for the week. Gradually increase your daily sending volume to ease into higher numbers.
  • Day 8: 1,128 emails
  • Day 9: 2,256 emails
  • Day 10: 2,328 emails
  • Day 11: 2,424 emails
  • Day 12: 3,408 emails
  • Day 13: 3,936 emails
  • Day 14: 4,608 emails
• Optimization Tip: During this stage, you can continue using Warmupinbox for other email accounts to keep building sender reputation while increasing sending limits in MailWizz.

b. Use IP Rotation for Better Deliverability

To further optimize the sending process, use IP rotation in MailWizz, especially if you're sending large volumes. Rotating between multiple IPs (e.g., 4-16 IPs) ensures that no single IP gets overwhelmed or blacklisted, thereby increasing your chances of landing in the inbox.

c. Personalize and Segment Your Emails

Personalization improves engagement, which is a crucial factor in maintaining a strong sender reputation. In MailWizz, use dynamic tags to personalize emails (e.g., name, location) and segment your lists based on user behavior, like past interactions or demographics.

d. Monitor and Adjust Sending Volumes

• Week 3: Scale to 96,912 emails by monitoring your delivery and engagement rates. Adjust the sending volume depending on how well your emails are performing.
  • Day 15: 6,312 emails
  • Day 16: 8,592 emails
  • Day 17: 10,536 emails
  • Day 18: 14,208 emails
  • Day 19: 16,152 emails
  • Day 20: 18,936 emails
  • Day 21: 22,176 emails

At this point, it's essential to keep a close eye on bounce rates, engagement rates, and any spam complaints. Using a real-time bounce handler in MailWizz can ensure bad emails are removed from your list promptly.

3. Optimizing Campaigns for Long-Term Success

a. Automation of Bounce and Complaint Handling

MailWizz offers automated bounce and complaint handling, which should be activated to ensure that emails that bounce or recipients who complain are automatically removed from your list. This helps you maintain a clean and engaged email list, which is vital for your sender reputation.

b. Content Optimization

Creating highly engaging content is just as important as managing your sending infrastructure. Use A/B testing to determine which subject lines, email content, and call-to-actions perform best. This will allow you to continuously improve your campaign performance.

c. Ongoing Monitoring and Feedback Loops

Use monitoring tools like SendForensics, Google Postmaster Tools, or MxToolbox to monitor your sender reputation and check your deliverability metrics in real time. Also, set up feedback loops with ISPs to monitor complaints and take immediate action.

4. Scaling to High Volumes and Full Capacity

Week 4 and Beyond:

Once the initial stages are successful, you can scale up to large volumes, reaching up to 1 million emails per week as follows:

• Week 4: Scale up to 749,280 emails, and continue monitoring metrics to ensure all systems remain healthy.
• Week 5: You’ll be ready to send over 1 million emails, achieving maximum capacity:
  • Day 29: 248,352 emails
  • Day 30: 499,968 emails

At this stage, you should focus on list hygiene, continuing to segment your audience and remove inactive subscribers regularly.

Final Thoughts

Combining Warmupinbox for gradual domain warm-up and MailWizz for bulk email sending offers a robust strategy to optimize email deliverability and achieve long-term success. By gradually increasing your sending volumes, using multiple IPs and domains, personalizing your emails, and constantly monitoring deliverability, you can ensure that your campaigns perform at their best without risking your reputation.