Skip to content

Validated Metrics – Page 8

Metrics reviewed and validated by the MetricHQ community and analytics practitioners. Each definition and formula has been vetted for accuracy, so you can adopt them with confidence.

Default directory · A–Z · 253 metrics

Email Bounce Rate

Email Bounce Rate is the percentage of sent emails that were not delivered to recipients. It is calculated by dividing the number of bounced emails by the total number of emails sent. Tracking this metric helps assess list health and delivery infrastructure. A high bounce rate can damage sender reputation and reduce campaign reach.

Email Clicks

Email Clicks is a count of the total number of times any link in an email was clicked by recipients. Marketers use Email Clicks to calculate key performance metrics like Click-Through Rate (CTR) and Click-to-Open Rate (CTOR), and to compare engagement across campaigns.

Email Contacts

Email Contacts is an email marketing metric that counts the total number of email addresses in an email list. A large, high-quality list helps marketers build ongoing relationships and reach more potential customers.

Email Hard Bounce Rate

Email Hard Bounce Rate is the percentage of sent emails that fail to deliver due to permanent, irreversible causes, such as invalid addresses, closed accounts, or inactive domains.

Email Hard Bounces

Email Hard Bounces is the total count of emails permanently rejected by a recipient's mail server due to irreversible causes such as invalid addresses, closed accounts, or inactive domains.

Email Ignore Rate

Email Ignore Rate is the percentage of sent emails that are ignored or deleted from the recipient’s inbox before being opened. It can be an indication that your email content isn’t engaging enough to be opened, or that your emails are being flagged as spam.

Email Open Rate

Email Open Rate is the percentage of all delivered emails that are opened by recipients. A high Email Open Rate indicates that your email has captured the interest of your recipients and ensures that your message is seen by your target audience.

Email Opens

Email Opens counts the total number of times an email is opened by all recipients, including multiple opens by the same person.

Email Soft Bounce Rate

Email Soft Bounce Rate is the percentage of sent emails that fail to reach the recipient due to a temporary technical issue, such as a full inbox or an unavailable mail server.

Email Soft Bounces

Email Soft Bounces counts the number of emails that failed to reach recipients due to temporary issues such as full inboxes, oversized attachments, or server downtime.

Email Unsubscribe Rate

Email Unsubscribe Rate is the percentage of email recipients who opt out of a mailing list after receiving a campaign email, measured against total emails delivered. It signals how well your content, frequency, and targeting match subscriber expectations. A rising rate can damage sender reputation and reduce inbox placement over time.

Employee Growth by Function

Employee Growth by Function measures how each organizational function is forecasted over a 1-5 year period. This hiring plan is typically factored into the financial model.