Low open rate
Open rates fall sharply — often a placement, identity, or measurement problem rather than subject lines alone.
- Reading time:
- 5 min
- Difficulty:
- Intermediate
- Estimated duration:
- 5 min
- Prerequisites:
- None
- Last updated:
- 2026-07-15
- Author:
- empire
Problem summary
Open rates fall sharply — often a placement, identity, or measurement problem rather than subject lines alone.
Severity: Medium
Symptoms
- Open rate declines vs historical baseline
- Clicks may or may not fall with opens
- Drop concentrated at one provider
Possible causes
- Junk or promotions placement
- Apple Mail Privacy Protection distorting opens
- From-name/domain changes reducing recognition
- List fatigue or irrelevant sends
How to diagnose
- Compare placement samples before relying on open rate
- Segment opens by provider and client
- Check whether click rate fell in parallel
How to fix
- Fix inbox placement and reputation first
- Stabilize From identity
- Improve relevance and send cadence
How to verify
- Click-based engagement stabilizes even if opens stay noisy
- Placement recovers where junking was the cause
Prevention
- Track clicks and replies alongside opens
- Avoid sudden From-domain changes
When to escalate
- Production mail is failing for a material share of recipients after remediation attempts