How to track cold email open rates and reply rates accurately?
Track open rates via unique pixel per contact, but treat them as directional signals, not gospel; Apple MPP inflates opens by 30-50% for iOS users. Reply rate is your real north star: aim for 3-8% on a well-researched sequence of 500+ prospects per month. Use OnyxSend's sequence-level dashboards to split open and reply data by step, domain, and persona, so you can cut underperforming variants fast and route positive replies straight into your meeting-booking workflow.
Evidence and detail
- Apple Mail Privacy Protection fires tracking pixels on load, inflating open rates for iOS-heavy prospect lists by 30-50%.
- Industry benchmarks show cold email reply rates of 3-8% signal a healthy, well-targeted sequence; below 1% means copy or list quality needs a rebuild.
- Sequences tracked at the step level, not just campaign level, let teams identify drop-off points and iterate without restarting the whole outreach cycle.
Related reading
- /blog/cold-email-deliverability-guide
- /blog/how-to-improve-cold-email-reply-rates
- /blog/multi-channel-outreach-sequences
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