Percentage of email recipients who open a marketing or product email.
Unique Opens / Emails Delivered × 100
Higher is better · Unit: percentage
How to Improve
Segment email lists by behavior and engagement level for personalized subject lines. A/B test subject lines systematically with every send. Clean email lists regularly to remove inactive subscribers and improve deliverability. Optimize send times based on recipient timezone and historical open patterns. Build a recognizable sender name and consistent value proposition in every email.
Ehsan's Analysis
Email open rates in SaaS are overreported by 20-30% due to Apple Mail Privacy Protection (MPP), which pre-loads tracking pixels for all emails on iOS/macOS Mail clients. Since Apple Mail represents 50-60% of email clients, your "45% open rate" might be 30% in reality. The metric that survived MPP: click-to-open rate (CTOR) — clicks divided by opens. CTOR is not inflated by MPP because fake opens do not generate fake clicks. SaaS email benchmarks post-MPP: product update emails should target 3-5% CTOR, onboarding sequences 8-12% CTOR, usage-triggered emails 15-25% CTOR. The highest-performing SaaS emails are triggered by user behavior (trial expiring, feature unused, usage milestone), not sent on a schedule. Intercom data shows behavioral emails generate 4x higher CTOR than broadcast emails. Stop measuring open rates entirely — they are fiction. Measure CTOR and revenue-per-email instead.
EJ
Ehsan Jahandarpour
AI Growth Strategist & Fractional CMO
Forbes Top 20 Growth Hacker · TEDx Speaker · 716 Academic Citations · Ex-Microsoft · CMO at FirstWave (ASX:FCT) · Forbes Communications Council
Frequently Asked Questions
What is a good Email Open Rate for SaaS companies at Series B stage?
The median Email Open Rate for SaaS companies at the Series B stage is 21%. Top‑quartile companies (75th percentile) significantly outperform this baseline. The most important factor is consistent improvement over time rather than hitting any single target number.
How does Email Open Rate differ by company stage in SaaS?
Email Open Rate typically improves as SaaS companies mature from seed through growth stage. Earlier‑stage companies should benchmark against stage‑appropriate peers rather than comparing themselves to mature companies.
How often should SaaS companies measure Email Open Rate?
SaaS companies at the Series B stage should track Email Open Rate monthly with quarterly deep‑dive analysis. Set up automated dashboards and alerts for significant deviations from your baseline.
What factors most impact Email Open Rate in the SaaS sector?
In SaaS, the primary factors impacting Email Open Rate include product‑market fit maturity, competitive landscape intensity, customer segmentation strategy, pricing optimization, and operational efficiency. Series B‑stage companies should focus on the one or two highest‑leverage factors rather than trying to optimize everything simultaneously.
How does Email Open Rate for SaaS compare to cross‑industry benchmarks?
SaaS Email Open Rate benchmarks can differ significantly from cross‑industry averages due to factors specific to the SaaS vertical including customer acquisition dynamics, competitive intensity, and typical deal sizes. Always compare against industry‑specific benchmarks rather than broad averages for meaningful insights.