Email deliverability sits at the foundation of every email marketing program. If your messages don't reach inboxes, every downstream metric — opens, forwards, click-throughs — becomes meaningless. Tracking Emails Delivered tells you how many contacts your campaign actually reached, and it serves as the starting point for calculating delivery rate and diagnosing list health.
How Emails Delivered is calculated
The formula is straightforward:
Emails Delivered = Emails Sent ? Bounces
Unsubscribed contacts are excluded from sends before delivery is attempted, so they don't factor into the bounce calculation. The result is a count of messages that reached a recipient's mail server without being rejected.
Why Emails Delivered matters
A high send volume means little if a significant portion never arrives. Monitoring Emails Delivered helps you:
- Identify list decay — a rising bounce rate signals outdated or invalid addresses
- Protect sender reputation — inbox providers track bounce rates and flag senders who consistently hit invalid addresses
- Benchmark campaign reach — comparing Emails Delivered across campaigns reveals whether your audience is growing, shrinking, or staying stable
- Interpret engagement metrics accurately — open rates, click rates, and conversion rates are all calculated against delivered volume, so inflated or deflated delivery counts distort every ratio downstream
Improving email deliverability
Regulations, inbox filtering technologies, and recipient behaviour all make deliverability harder to maintain over time. The following practices give your emails the best chance of reaching the inbox.
Authenticate your sending domain. Set up SPF, DKIM, and DMARC records so inbox providers can verify you're a legitimate sender. Authentication is the single highest-leverage step for improving deliverability.
Use confirmed opt-in (double opt-in). Asking recipients to confirm their subscription reduces invalid addresses, improves engagement rates, and signals to inbox providers that your list is high quality.
Send from a custom domain. Avoid sending from free email domains such as Gmail, Yahoo, or Hotmail. Inbox providers treat messages from free domains with greater suspicion, especially at volume.
Prioritize content quality. Avoid clickbait subject lines, excessive images, and overuse of buttons. Messages that look like spam get treated like spam — by filters and by recipients.
Keep links transparent. Include full, readable URLs in your emails. URL shorteners obscure destinations and can trigger spam filters.
Make it easy to unsubscribe. Clear, accessible unsubscribe options are required by law in most jurisdictions, including Canada's CASL and the U.S. CAN-SPAM Act. Easy unsubscribes keep your list clean, reduce spam complaints, and improve your sender reputation over time.
Emails Delivered and list hygiene
Deliverability degrades when lists aren't actively maintained. Contacts change email addresses, abandon inboxes, or mark messages as spam. Routine list hygiene practices — removing hard bounces immediately, suppressing chronic non-openers, and validating new addresses at the point of capture — protect your Emails Delivered count and your sender reputation simultaneously.
Monitoring Emails Delivered alongside your email unsubscribe rate gives you a complete picture of list health: deliverability tells you who can be reached; unsubscribes tell you who no longer wants to be.