Part of a larger guide

This article is part of our comprehensive guide on newsletters for companies. Read the full guide for the complete strategy.

You send your newsletter. You wait. You refresh the dashboard. And the number staring back at you — the open rate — determines whether the hours you spent writing actually mattered.

Here is the uncomfortable truth: most newsletters underperform not because the content is bad, but because nobody ever sees it. The average open rate across all industries is 21.33%, according to Mailchimp’s 2024 benchmark data. That means nearly 4 out of 5 subscribers ignore your email entirely.

But the best newsletters — the ones built around executive thought leadership and genuine expertise — routinely hit 35 to 50%. The gap between average and excellent is not talent. It is strategy.

This article breaks down exactly what drives that gap, with real data, actionable levers, and the specific changes that move the needle fastest.

What is a good open rate for your newsletter?

Before optimizing anything, you need to know where you stand relative to real benchmarks.

Industry averages (Mailchimp 2024 data):

These numbers tell you what “normal” looks like. But normal is not the goal.

What high-performing newsletters achieve:

B2B thought leadership newsletters — the kind where a founder, CEO, or expert shares genuine insight — consistently hit 35 to 50% open rates. Some niche newsletters with highly engaged audiences exceed 60%.

The difference comes down to three factors: list quality (who is on your list), sender reputation (do they recognize and trust you), and subject line relevance (does this feel worth opening right now).

If you are below 20%, there is significant room for improvement. If you are between 20 and 30%, you are average — and average means invisible. If you are above 35%, you are doing something right and should focus on maintaining consistency.

The 10 levers that have the most impact on open rate

Not all optimizations are equal. Here are the 10 levers ranked by impact, from highest to lowest:

1. List quality and hygiene. Nothing else matters if your list is full of dead addresses. A clean list of 2,000 engaged subscribers will outperform a dirty list of 20,000 every single time.

2. Sender name recognition. People open emails from people they know. Using a personal name (“Sarah Chen” or “Sarah from Acme”) outperforms generic brand names by 20 to 35% in most tests.

3. Subject line relevance. Not cleverness — relevance. Your subject line must signal that this specific email contains something the reader needs right now.

4. Send time consistency. Sending at the same time on the same day builds habit. Habit drives opens more than any optimization trick.

5. Deliverability fundamentals. SPF, DKIM, and DMARC authentication. If your emails land in spam or promotions, open rate optimization is meaningless.

6. Preview text optimization. The preview text (preheader) is your second headline. Most newsletters waste it by letting the email client auto-generate it from body content.

7. Segmentation. Sending the right content to the right segment. A 10,000-person list with 3 segments will outperform the same list treated as one audience.

8. Frequency alignment. Too frequent and you get unsubscribes. Too infrequent and subscribers forget you exist. Weekly is the sweet spot for most thought leadership newsletters.

9. Mobile optimization. Over 60% of emails are opened on mobile. If your subject line gets cut off at 35 characters on a phone screen, you are losing opens.

10. Re-engagement campaigns. Proactively winning back inactive subscribers — or removing them — keeps your metrics honest and your deliverability strong.

How to write subject lines that actually get opened

Subject lines are the most discussed lever, and for good reason. They are the single variable your subscriber sees before deciding to open or scroll past.

But most advice about subject lines is wrong. “Use emojis.” “Create urgency.” “Ask a question.” These tactics work once. They fail at scale because they prioritize tricks over trust.

What actually works, consistently:

Specificity over cleverness. “3 pricing mistakes that cost SaaS companies 20% ARR” outperforms “Are you making these pricing mistakes?” every time. Specificity signals that you have real insight, not recycled advice.

The curiosity gap — used honestly. A curiosity gap works when it promises something genuinely surprising. “Why we stopped using OKRs (and what replaced them)” creates a gap that delivers on the other side. “You won’t believe what happened next” is manipulation and your audience will punish you for it.

Numbers and data points. “Our CAC dropped 40% in 6 months — here’s the playbook” works because it is concrete. Abstract subject lines (“Thoughts on growth”) get ignored.

Pattern interrupts within your own cadence. If you normally send analytical deep dives, an occasional personal story subject line stands out. The interrupt only works because the pattern exists.

Examples of high-performing subject lines:

Examples of subject lines that underperform:

The pattern is clear. High performers are specific, personal, and signal value. Low performers are generic, impersonal, and signal nothing.

The impact of send timing: what the data shows

Send timing is one of the most over-optimized and under-understood levers. Here is what the data actually says.

Best days for open rates:

Tuesday and Thursday consistently show the highest open rates across B2B newsletters. Monday emails compete with weekend catch-up. Wednesday is solid but slightly behind. Friday through Sunday sees the steepest drops.

Best times for open rates:

Between 9 and 11 AM in the recipient’s time zone. There is a secondary peak around 1 to 2 PM (post-lunch inbox check). Early morning sends (6 to 7 AM) work for audiences that check email first thing.

But here is what matters more than optimization:

Consistency beats optimization. Sending every Tuesday at 9 AM builds an expectation. Your subscribers start looking for your email. That behavioral habit is worth more than finding the “perfect” send window.

The worst strategy is inconsistency — sending Monday one week, Thursday the next, skipping a week, then sending twice. Inconsistency trains your audience to forget you exist.

Time zone considerations:

If your audience spans multiple time zones, segment by geography or send at 10 AM Eastern, which catches the East Coast at peak time and the West Coast at 7 AM (early but not unreasonable). For international audiences, consider separate sends by region.

How list hygiene affects your open rate more than you think

This is the lever most newsletters ignore — and it is arguably the most impactful.

The compounding problem of a dirty list:

Every email address that never opens your newsletter actively hurts your deliverability. Email service providers like Gmail and Outlook use engagement signals to determine whether to deliver your emails to the inbox, the promotions tab, or spam.

When a large percentage of your list ignores your emails, the algorithm concludes your content is not wanted. It starts routing your emails away from the inbox — including for subscribers who do want to hear from you.

The math is brutal: A list of 10,000 with 50% inactive subscribers does not just halve your open rate. It actively suppresses the open rate of the engaged half by damaging your sender reputation.

What to do about it:

Remove hard bounces immediately. These are addresses that no longer exist. Every major ESP does this automatically, but verify it is happening.

Run a re-engagement campaign every quarter. Send a “Do you still want to hear from us?” email to subscribers who have not opened in 90 days. Those who do not respond in two weeks get removed.

Sunset inactive subscribers after 6 months. If someone has not opened a single email in 6 months, they are not your audience anymore. Remove them. Your open rate will jump immediately because you are measuring engagement against an actually engaged list.

Audit your signup sources. If you are getting subscribers from a lead magnet that attracts the wrong audience, those subscribers will never engage. Better to have 500 subscribers who care than 5,000 who signed up for a free PDF and never returned.

The psychological barrier to removing subscribers is real. It feels like losing ground. But a smaller, engaged list outperforms a large, disengaged one in every metric that matters — open rate, click rate, replies, and conversions.

What Apple Mail Privacy Protection changed (and what it didn’t)

Since iOS 15 launched Mail Privacy Protection in September 2021, open rate metrics have gotten noisier. Understanding what changed — and what did not — is essential for interpreting your data correctly.

What Apple Mail Privacy Protection does:

When an Apple Mail user enables this feature (which most do by default), Apple pre-downloads all email content, including the invisible tracking pixel that measures opens. This registers an “open” whether or not the subscriber actually read your email.

The practical impact:

Your reported open rate for Apple Mail users is artificially inflated. Since Apple Mail accounts for roughly 50 to 60% of email opens globally, this means your overall open rate number is higher than your actual read rate.

What this means for your strategy:

First, stop treating open rate as a precision metric. It is now a directional indicator. Trends matter more than absolute numbers. If your open rate drops from 38% to 32% over three months, that is a real signal even if both numbers are inflated.

Second, complement open rate with metrics Apple cannot distort. Click rate is the most reliable engagement metric post-MPP. If people are clicking links in your newsletter, they are reading it. Reply rate is even better — a subscriber who replies is deeply engaged. Conversion rate (signups, purchases, bookings from newsletter links) is the ultimate measure.

Third, do not abandon open rate entirely. It still works as a relative comparison tool. A/B testing subject lines still reveals which version performs better, even if the absolute numbers are inflated. The inflation applies equally to both versions.

What did not change:

The fundamentals of getting your newsletter opened — sender trust, subject line relevance, list quality, deliverability — remain exactly the same. Apple Mail Privacy Protection changed the measurement, not the behavior. People still decide whether to open your email based on who sent it and what the subject line promises.

Your optimization strategy should not change. Your interpretation of the data should.

Want Newsletters Your Audience Actually Opens?

Open rate is a symptom. The real question is whether your newsletter is positioned as something your audience genuinely wants to read — not just another email in a crowded inbox.

At Mazkara Studio, we build executive newsletters that consistently hit 35 to 50% open rates. Not through tricks or hacks, but through sharp positioning, distinctive voice, and content that earns the open every single time.

The difference between a newsletter people tolerate and one they look forward to is strategy — specifically, the kind of strategy that turns a founder’s expertise into content their audience cannot get anywhere else.

Book a 15-minute call and we will audit your current newsletter performance, identify the biggest open rate levers for your specific situation, and show you what a high-performing executive newsletter looks like in practice.

Your subscribers gave you their email address — are you giving them a reason to keep opening? Let’s talk about what your newsletter could become.