Email Marketing Benchmarks Australia 2025: Open Rates, Click Rates by Industry

Key Takeaways

• Australian average open rate: 21.5% (2025)
• Australian average click-through rate: 2.8%
• Best-performing industry: Healthcare — 26.8% open rate
• Lowest-performing industry: Retail — 17.3% open rate
• Best send day: Tuesday — 23.4% open rate
• Average unsubscribe rate: 0.24% per send
• Mobile opens: 58.6% of all email opens in Australia
• Segmented campaigns outperform unsegmented by 14.3 percentage points on open rate

Why These Numbers Matter for Australian Businesses

Email has a $38 return on every $1 spent in Australia — the highest ROI of any digital channel, according to the Data & Marketing Association’s 2025 report. But that average hides enormous variance.

A healthcare clinic hitting 26.8% open rates is operating a fundamentally different channel than a retail brand stuck at 17%. The gap comes down to three things: list quality, audience-content match, and send frequency.

This guide gives you the 2025 benchmarks for Australian email marketing so you know exactly where you stand.

Australian Email Open Rate Benchmarks by Industry (2025)

Healthcare’s lead reflects high subscriber intent. A patient who signed up to a clinic’s list wants to hear from that clinic. Retail struggles because promotional email fatigue is real — subscribers signed up for a discount and now ignore everything that follows.

The takeaway: If your open rate sits more than 4 percentage points below your industry average, the problem is almost certainly list hygiene or subject line quality — not your product.

Email Benchmarks by Send Day (Australia)

Tuesday’s dominance holds consistently across Australian datasets going back to 2020. The reason is structural: Monday inboxes are backlogged from the weekend. By Tuesday, subscribers are in working mode and actively clearing email.

Friday sends are down because recipients defer to “I’ll deal with this next week” — and then don’t. Weekend sends are almost always a mistake unless you’re running a leisure or hospitality brand where weekend context is relevant.

The takeaway: For most Australian businesses, Tuesday at 10am AEST is the default send window. Test Wednesday morning as a second slot before experimenting further.

Open Rate by Email List Size (Australia)

Smaller lists outperform larger ones by a wide margin:

This doesn’t mean you should keep your list small — it means list growth must be matched with segmentation investment. A list of 50,000 treated as one audience will underperform a list of 2,000 properly segmented.

The answer is behavioural segmentation: send different content to people who opened your last 5 emails versus people who haven’t opened in 90 days. Most platforms (Klaviyo, ActiveCampaign, Mailchimp) automate this.

The takeaway: List size is a vanity metric. Engaged segment size is the number that predicts revenue.

Mobile vs Desktop Email Opens in Australia

Desktop readers click more. This makes sense — they have a full browser, a mouse, and usually more time. But 58.6% of opens happen on mobile, so a design that breaks on small screens kills more than half your campaign.

The practical answer: design mobile-first (single column, large tap targets, minimum 14px body text), then check desktop rendering. Never the other way around.

Subject Line Benchmarks That Move the Number

Campaign Monitor’s 2025 analysis of 2.4 billion Australian sends found these subject line patterns perform above average:

Urgency works because FOMO is real. But overuse burns trust — if everything is urgent, nothing is. Save urgency triggers for genuine deadline-driven content.

Numbers in subject lines work for the same reason they work in headlines: they signal specificity. “5 ways to…” outperforms “Tips for…” because it makes an implicit promise about how long the content is.

The takeaway: Personalisation + number + urgency is the triple stack that consistently outperforms plain descriptive subject lines. Test one variable at a time.

Deliverability Benchmarks (What’s Actually Reaching Inboxes)

Bounce rates above 2% trigger ISP suspicion and reduce deliverability for the whole list. Run a list cleaning pass (using ZeroBounce or NeverBounce) any time bounce rate creeps above 1%.

Spam complaint rates above 0.2% start activating Gmail and Outlook suppression filters. This is almost always a mismatch between what subscribers thought they were signing up for and what they’re actually receiving.

How Australian Email Benchmarks Compare Globally

Australia outperforms the US on both open rate and click rate. This likely reflects list curation habits — Australian businesses tend to grow lists more organically (through content and events) rather than the purchased-list and high-volume blast tactics more common in US email culture.

New Zealand slightly outperforms Australia, consistent across multiple years of data.

The Metrics That Actually Predict Revenue

Open rate is a starting point, not the finish line. The metrics that tie directly to revenue are:

Revenue per email (RPE): Total revenue from a campaign divided by sends. For eCommerce, the benchmark is $0.08–$0.22 per email sent. For SaaS, it’s $0.12–$0.35 for nurture sequences.

List revenue efficiency: Annual email-attributed revenue divided by list size. A healthy SMB email programme generates $5–$18 per subscriber per year. Under $3 per subscriber per year usually means email is under-converting, not the list is too small.

Conversion rate from click: Click-to-conversion on the landing page. An email can have a 4% CTR but if the landing page converts at 0.5%, the campaign underperforms one with 2% CTR and 3% landing page conversion.

Improving Your Email Performance: What Actually Works

Based on Campaign Monitor’s 2025 analysis of high-performing Australian accounts (top 20% by click-to-open rate), these tactics separate performing from underperforming programmes:

1. Weekly sends beat monthly sends. Weekly email programmes outperform monthly by 2.3x on annual revenue per subscriber, even though monthly programmes have slightly higher individual open rates (24.1% vs 21.5%). Frequency builds familiarity.

2. Segmentation adds 14.3 percentage points. Segmented campaigns in Australia averaged 35.8% open rate vs 21.5% for broadcast campaigns — a 14.3pp gap. The most effective segment: recent purchaser vs. prospect.

3. Welcome sequences set the trajectory. The first email in a welcome sequence has an average 50–60% open rate in Australia. Brands that send a strong 3-email welcome sequence (day 1, day 3, day 7) retain 31% more subscribers over 6 months.

4. Re-engagement campaigns work. A 3-email re-engagement sequence targeting subscribers inactive for 90 days recovers 18–24% of them at average industry benchmarks. The sequence: value email → response request → unsubscribe offer.

What This Means for Your Campaign

If your open rate is 5+ points below your industry benchmark, check three things in this order:

1. Sender reputation — check Google Postmaster Tools and Microsoft Smart Network Data Services for domain reputation
2. Subject line patterns — are you using questions, numbers, and personalisation?
3. List hygiene — when did you last remove 90-day inactives?

If your click rate is below benchmark despite good open rates, the problem is on the page, not the subject line. The content-to-CTA bridge isn’t working.

Email is still the highest-ROI digital channel when it’s run properly. Most Australian businesses are leaving money on the table by treating it as a broadcast tool rather than a segmented, behavioural channel.

Want an audit of your email programme? Get in touch and we’ll benchmark your account against the industry data above.