Every "average email open rate" statistic you'll find online is true and also somewhat useless on its own — list quality, industry, and send frequency swing the real number more than any single benchmark can capture. Here's a more usable way to think about what good actually looks like.
Why benchmarks are trickier than they look
Apple's Mail Privacy Protection alone inflated open rates across the board by counting pre-fetched images as opens, which means pre-2021 and post-2021 open rate benchmarks aren't really comparable. Combine that with wide swings by industry and list size, and a single "good open rate" number is more misleading than helpful without context.
Open rate benchmarks by list type
| Email type | Reasonable range |
|---|---|
| Welcome series | 50–65% |
| Post-purchase / transactional-adjacent | 45–60% |
| Regular promotional campaigns | 25–40% |
| Win-back / re-engagement | 15–25% |
Welcome and post-purchase emails outperform because they're sent to people in an active, high-intent moment. Win-back campaigns underperform by design — they're reaching people who've already gone quiet.
Click and conversion rate benchmarks
Click-through rate is a more reliable signal than open rate, since it isn't distorted by privacy features. A healthy promotional campaign typically sees 2–5% click-through on the full send, while a well-built automated flow (welcome, abandoned cart) often reaches 5–10%, because the audience is more qualified and the message more relevant to where they are.
Segmentation predicts click rate more reliably than subject line quality. A well-segmented list with an average subject line consistently outperforms a broad blast with a clever one.
Revenue-per-email: the metric that matters most
Open and click rates are proxies. Revenue per email sent (or per recipient) is the metric that actually reflects whether the program is working. It normalizes for list size and lets you compare a small, highly-engaged list against a larger, more diluted one on equal footing — and it's the number that ties email directly back to the rest of the business.
Flows vs. campaigns: where the real ROI hides
Across most ecommerce and service accounts we manage, automated flows — welcome series, abandoned cart, post-purchase, win-back — generate a disproportionate share of email revenue relative to the time spent building them, because they're built once and then earn continuously. Campaigns matter for launches and promotions, but flows are usually the highest-leverage place to start.
If your numbers fall short
Before assuming the content or design is the problem, check list health first: high unsubscribe or spam-complaint rates, cold segments still receiving full-frequency sends, and missing sender authentication (SPF/DKIM/DMARC) all suppress performance regardless of how good the email itself is. Fix deliverability fundamentals before optimizing subject lines.