The percentage of email recipients who opt out of receiving future emails.
Unsubscribe rate measures how many recipients choose to stop receiving your emails. For cold email, this includes both explicit unsubscribe requests and replies asking to be removed.
Formula: (Unsubscribes / Emails Delivered) x 100
Typical benchmarks:
Important for cold email: 1. Always honor unsubscribe requests immediately 2. Treat "not interested" replies as unsubscribes 3. High unsubscribe rates indicate targeting or messaging problems 4. Ignoring unsubscribes can lead to CAN-SPAM violations
Unsubscribes are actually a healthy sign that your emails are reaching inboxes. The real problem is when people mark you as spam instead of unsubscribing.
We handle the technical details - authentication, warmup, deliverability - so you can focus on writing emails that convert.