| Recipients | Number of total contacts to which a campaign is targeted |
| Sent | Number of emails which were attempted to be delivered. |
| Rejected | Number of emails which were rejected by Bird due to policy or technical reasons. |
| Admin bounces | Number of emails that were bounced by Bird. Not counted in Bounces. |
| Delivered | Number of emails which were successfully delivered to the recipient’s mailbox provider. |
| Accepted | Number of emails delivered which didn’t subsequently bounce. |
| Delayed | Number of emails which were temporarily rejected by the recipient’s mailbox provider. |
| Opens | Number of unique recipients who opened the email. These emails were displayed or had a link clicked. Opens do not include prefetch opens. |
| Clicks | Number of unique recipients who have clicked at least one link in the email. |
| Spam complaints | Number of unique recipients who marked the email as spam |
| Unsubscribes | Number of unique recipients who either submitted the unsubscribe page or clicked the list-unsubscribe link in the header.Learn more about list-unsubscribes. |
| Bounces | Number of bounced emails. Total of In-Band and Out-of-Band Bounces. Bounces do not include Admin Bounces. |
| In-band bounces | Number of emails that bounced on delivery attempts. Total of Hard Bounces and Temporary Bounces. |
| Hard bounces | Number of emails that bounced due to permanent delivery issues. |
| Temporary bounces | Number of emails that bounced due to temporary delivery issues. Filtering rules or unknown reasons. Total of Soft Bounces, Block Bounces and Undetermined Bounces. |
| Soft bounces | Number of emails that bounced due to temporary delivery issues. |
| Block bounces | Number of emails that bounced due to a mailbox provider's filtering rules. |
| Undetermined bounces | Number of emails that bounced due to undetermined reasons. |
| Out-of-band bounced | Number of emails that bounced subsequent to a successful delivery. |
| Rejection rate | - Rejected / Total Recipients %
- Percentage of emails which are rejected out of targeted emails
|
| Admin bounce rate | - Admin Bounces / Total Recipients %
- Percentage of emails which admin bounced out of targeted emails
|
| Delivery rate | - Delivered / Sent %
- Percentage of emails which are delivered out of Sent.
|
| Accepted rate | - Accepted / Sent %
- Percentage of emails which are accepted out of Sent.
|
| Delayed rate | - Delayed / Accepted %
- Percentage of emails which are delayed out of accepted emails.
|
| Open rate | - Open / Delivered %
- Percentage of unique recipients who opened the emails out of who got the email delivered.
|
| Click-through rate | - Clicks / Delivered %
- Percentage of unique recipients who clicked at least one link in the email out of who got the email delivered.
|
| Spam complaint rate | - Spam complaints / Delivered %
- Percentage of unique recipients who marked the email as spam out of who got the email delivered.
|
| Unsubscribe rate | - Unsusbcribes / Delivered %
- Percentage of unique recipients who unsubscribed out of who got the email delivered.
|
| Bounce rate | - Bounces / Sent %
- Percentage of emails which had in-band bounce out of sent emails.
|
| In-band bounce rate | - In-band Bounces / Sent %
- Percentage of emails which in-band bounced out of sent emails.
|
| Hard bounce rate | - Hard Bounces / Sent %
- Percentage of emails which hard bounced out of sent emails.
|
| Temporary bounce rate | - Temporary Bounces / Sent %
- Percentage of emails which temporarily bounced out of sent emails.
|
| Soft bounce rate | - Soft Bounces / Sent %
- Percentage of emails which soft bounced out of sent emails.
|
| Block bounce rate | - Block Bounces / Sent %
- Percentage of emails which block bounced out of sent emails.
|
| Undetermined bounce rate | - Undetermined Bounces / Sent %
- Percentage of emails which bounced due to undetermined reasons out of sent emails.
|
| Out-of-band bounce rate | - Out-of-band Bounces / Sent %
- Percentage of emails which had out of band bounce out of sent emails.
|