Engagement Rate
The percentage of email recipients who interact with your emails through opens, clicks, replies, or forwards.
Engagement rate is a composite metric that measures how actively your recipients interact with your emails. It typically includes open rate, click-through rate (CTR), reply rate, and forward rate. ISPs like Gmail increasingly use engagement signals to determine inbox placement — emails to engaged recipients land in the Primary tab, while emails to disengaged lists end up in Promotions or Spam.
Key engagement metrics:
- Open rate: 20-25% is average; above 30% is strong
- Click-through rate: 2-5% is average; above 5% is strong
- Reply rate: Varies by type — cold outreach sees 1-5%, newsletters rarely track this
- Unsubscribe rate: Below 0.2% is healthy; above 0.5% signals a problem
How email verification impacts engagement: Clean lists directly improve engagement rates by removing addresses that would never open or click — invalid addresses, abandoned mailboxes, and spam traps dilute your engagement metrics. After running a list through SendSure, customers typically see open rates increase by 15-25% simply because the denominator (total recipients) decreases while actual engagement stays the same or improves.
Related terms
Sender Reputation
A score assigned by ISPs to your email sending domain/IP that determines whether your emails reach the inbox.
Email Hygiene
The set of practices used to maintain a clean, healthy email list by removing invalid, inactive, and risky addresses.
Inbox Placement Rate
The percentage of sent emails that successfully land in the recipient's primary inbox rather than spam, promotions, or junk folders.
Want to learn more?
Blog posts on verification and deliverability.