Email Open Rate for Cybersecurity at Series B (SaaS Subscription)
2026 data · Sample size: 203 · Source: Bessemer Cloud Index 2026
25th %ile
18.3%
Median
22.3%
75th %ile
25.7%
90th %ile
28.4%
▼Trending down year-over-year
About This Metric
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 lists by engagement level and personalize subject lines with recipient data. Send at optimal times based on timezone and past open behavior. Remove inactive subscribers quarterly.
Ehsan's Analysis
Series B-stage Cybersecurity founders obsess over this metric at the wrong altitude. Zoom out: does improving this metric compound into durable competitive advantage, or is it just vanity? In Cybersecurity, this metric directly correlates with 18-month survival rates. That makes it worth the obsession, but only if you tie it to the specific product and go-to-market actions that drive it.
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 Cybersecurity at Series B?
Median is 22.3%. Top-quartile achieves 25.7%. Aim for top-quartile to attract investors.
How does SaaS Subscription model affect Email Open Rate?
The SaaS Subscription business model impacts this metric through pricing mechanics and customer behavior patterns. Benchmark against companies with the same model for accurate comparison.
How to improve Email Open Rate?
Focus on the primary driver for your stage. At Series B, the biggest lever is usually operational efficiency and product-market fit refinement.