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Overview

The Metrics dashboard gives you a real-time view of your email sending performance. It tracks every email from the moment it’s sent through delivery, opens, clicks, bounces, and complaints — helping you understand what’s working and catch problems early.

Filtering

You can narrow your metrics using two filters:
  • Domain — View metrics for a specific domain or all domains combined
  • Date range — Select a custom time period. The available range depends on your plan’s data retention policy

Email metrics

These are the six core metrics tracked for every email you send.

Sent

The total number of emails created and dispatched through SendKit — via API, campaigns, or automations. This is the base metric used as the denominator for all rate calculations.

Delivered

Emails that were successfully accepted by the recipient’s mail server. An email counts as delivered if the receiving server confirmed receipt.
“Delivered” means the email reached the server, not necessarily the inbox. It could still land in spam depending on content and sender reputation.
Includes: Emails that were later opened or clicked — since delivery always happens before engagement.

Opened

Emails where the recipient opened the message. Opens are detected via a small tracking pixel embedded in the email.
Open tracking must be enabled on your domain configuration. Many email clients block tracking pixels, so open rates are typically underreported. Use this metric as a directional signal, not an exact count.
Includes: Emails that were later clicked — since opening always happens before clicking.

Clicked

Emails where the recipient clicked at least one link. Clicks are tracked by routing links through SendKit before redirecting to the original URL.
Click tracking must be enabled on your domain configuration.

Bounced

Emails that were rejected by the recipient’s mail server. This typically happens when:
  • The email address doesn’t exist
  • The recipient’s mailbox is full
  • The receiving server blocked the email
Bounces directly affect your sender reputation. A high bounce rate signals to mail providers that you’re sending to invalid addresses.

Complained

Emails where the recipient marked the message as spam. This is the most damaging metric for your reputation.
Keep your complaint rate below 0.1%. Even a small number of complaints can trigger warnings or pause your sending. Always include an easy unsubscribe option and only send to contacts who expect your emails.

Rate metrics

Rates give you a percentage view of your performance, making it easier to compare across different time periods and sending volumes.

Deliverability rate

The percentage of sent emails that were successfully delivered.
Formula(Delivered ÷ Sent) × 100%
Healthy rangeAbove 95%
What affects itInvalid addresses, blocklists, authentication issues, content filters
A high deliverability rate means your emails are reaching recipients. If this drops, check for bounces and review your suppression list.

Bounce rate

The percentage of sent emails that bounced.
Formula(Bounced ÷ Sent) × 100%
Warning threshold5%
Critical threshold10%
What affects itInvalid addresses, stale contact lists, blocklists
Use email validation before sending to clean your contact list and reduce bounces.

Complaint rate

The percentage of sent emails that were marked as spam by recipients.
Formula(Complained ÷ Sent) × 100%
Warning threshold0.1%
Critical threshold0.5%
What affects itUnwanted emails, missing unsubscribe link, misleading content, sending to unengaged contacts
This is the most important rate to monitor. Mail providers like Gmail and Outlook heavily penalize senders with high complaint rates.

Reputation

The reputation badge in the top-right corner gives you an at-a-glance view of your sending health based on the last 24 hours:
StatusMeaning
HealthyBounce rate below 5% and complaint rate below 0.1%. Everything is normal
WarnedBounce rate between 5–10% or complaint rate between 0.1–0.5%. Take action to improve
PausedBounce rate 10% or above, or complaint rate 0.5% or above. Sending is paused to protect your reputation
Reputation is only evaluated when you’ve sent at least 200 emails in the last 24 hours. Below that volume, the status remains Healthy.

What to do if your reputation degrades

  • Review recent bounces and remove invalid addresses
  • Check if you’re sending to contacts who haven’t opted in
  • Make sure your unsubscribe link is visible and working
  • Consider slowing down your sending volume
  • Sending is temporarily paused to protect your domain
  • Clean your contact list immediately — remove bounced and unengaged contacts
  • Review your suppression list for patterns
  • Once you’ve addressed the issues, your reputation will recover as your 24-hour metrics improve

Charts

Email activity chart

The main area chart shows daily trends for all six metrics overlaid on the same timeline. Use it to:
  • Spot sudden drops in deliverability
  • Identify spikes in bounces or complaints after a campaign
  • See engagement trends (opens and clicks) over time

Bounce and complaint charts

Two dedicated charts below the main chart give you a focused view of bounces and complaints separately. These are the metrics that matter most for reputation, so they get their own visualization.

Trend indicators

Each metric card shows a percentage change comparing the first half of your selected period to the second half. For example, if you’re viewing 14 days, it compares the first 7 days to the last 7.
  • Green arrow up — Metric increased (good for sent, delivered, opened, clicked)
  • Red arrow up — Metric increased (bad for bounced, complained)
  • Green arrow down — Metric decreased (good for bounced, complained)
  • Red arrow down — Metric decreased (bad for sent, delivered, opened, clicked)

How metrics are tracked

SendKit tracks the final state of each email. Every email goes through a progression:
Sent → Delivered → Opened → Clicked
If an email is opened and then clicked, it counts as clicked (the most advanced state). This means:
  • Delivered includes emails that were opened or clicked
  • Opened includes emails that were clicked
  • Clicked is the most specific engagement metric
Negative outcomes (bounced, complained, failed) are also final states — an email can only end in one state.

FAQ

Many email clients (Apple Mail, Gmail) block tracking pixels by default or pre-fetch images in ways that don’t count as opens. Open rates are always underreported. Focus on click rates for a more reliable engagement signal.
A bounce means the recipient’s mail server rejected the email (e.g., address doesn’t exist). A failure means the email couldn’t be sent at all (e.g., invalid configuration, domain not verified).
Metrics update in real time. As new email events come in, the dashboard refreshes automatically — no need to reload the page.
Metrics are cumulative, not exclusive. A delivered email can also be opened, and an opened email can also be clicked. Each metric includes the more advanced states.
The available date range depends on your plan’s data retention policy. Check your plan details for the exact retention period.