When you use Outboundry’s email warmup feature, understanding your sent numbers, received numbers, and deliverability metrics is essential to gauge the health of your sender reputation and ensure your outreach campaigns have the best chance of landing in recipient inboxes. Here’s a detailed breakdown of what these values mean, why they matter, and how to use them to optimize your results.
📩 Sent – How Many Warmup Emails Were Sent
What it means:
This number shows the total warmup emails that Outboundry attempted to send from your connected email account during the warmup process.
Why it matters:
Seeing the correct number of sent emails helps you confirm that your warmup schedule is running as expected. If this number is lower than scheduled, it could mean your account is being rate-limited by the email provider.
Example:
If you scheduled 50 warmup emails for a day and Sent shows 48, it means 48 warmup emails were successfully initiated.
📥 Received – How Many Warmup Emails Were Delivered
What it means:
This number represents how many of the warmup emails actually landed in the recipient inboxes — not bounced or blocked.
Why it matters:
Received tells you whether the warmup emails are making it past spam filters and reaching the inboxes of other warmup accounts in the Outboundry network.
Example:
If Sent = 50 and Received = 45, that means 45 warmup emails were accepted and delivered.
📊 Deliverability – Percentage of Success
What it means:
Deliverability is a calculated metric expressed as a percentage:
Deliverability = (Received / Sent) × 100It tells you how well your warmup emails are performing in terms of deliverability.
Why it matters:
High deliverability means your email account is being trusted by inbox providers — which improves your ability to deliver real outreach emails later. A low deliverability percentage signals that your account or content may still be triggering spam filters.
🧠 Why These Metrics Are Important
Together, these metrics help you:
Track how well your warmup activity is progressing
Detect potential deliverability issues early
Understand the health of your email account reputation
Know when your account is ready for cold outreach
✔ What to Expect During Warmup
During a typical warmup:
Sent should steadily increase as your warmup schedule runs
Received should gradually catch up as inbox providers start trusting your account
Deliverability should steadily rise toward 90–100% over time
A healthy warmup graph shows deliverability trending upwards — meaning more of your warmup emails are landing in inboxes.
❓ Common Questions
Q: Why is Received lower than Sent?
Warmup emails may be filtered, delayed, or blocked by certain email service providers. The Received metric reflects what actually made it into inboxes.
Q: Is 100% deliverability guaranteed?
Not always. Deliverability depends on sender reputation, domain settings (SPF/DKIM/DMARC), content quality, and recipient provider policies. The goal is consistent improvement.
Q: How quickly should deliverability improve?
Typically, deliverability improves over the first few days of warmup as mailbox providers become familiar with your sending patterns.
📌 Pro Tips to Improve Deliverability
Make sure all email authentication (SPF, DKIM, DMARC) is set up
Avoid spammy language in your warmup email content
Warm up gradually rather than sending a huge volume on day one
Let the Outboundry system run warmup consistently