Email Marketing That People Actually Open

Email is still one of the most cost-effective ways to stay in front of your customers — you own the list, there's no algorithm deciding who sees it, and it lands in a place people check every day. But that only holds if your emails get opened and read rather than ignored or unsubscribed. The difference is almost entirely craft, and craft you can learn.

The list matters more than the email

The single biggest lever on email performance isn't the writing — it's who you're sending to. A small list of people who genuinely asked to hear from you will outperform a large list of scraped or bought contacts every time, and it keeps you on the right side of Australia's Spam Act, which requires consent, clear identification of the sender, and a working unsubscribe.

• Build the list with permission. Offer something worth an email address — a useful guide, a genuine reason to subscribe — rather than pre-ticking a box or adding people who once bought from you without asking.
• Keep it clean. Periodically remove addresses that never open. A smaller, engaged list improves your deliverability, because mailbox providers watch engagement to decide whether you land in the inbox or the junk folder.
• Never buy a list. It damages your sender reputation, breaches consent rules, and the people on it don't know you.

The subject line earns the open

Nobody reads an email they don't open, and the subject line does almost all the work of getting it opened. The strongest subject lines are specific and honest — they tell the reader exactly what's inside and why it's worth thirty seconds. Curiosity gaps and clickbait get one open and a long memory; specificity earns opens repeatedly.

A few things that reliably help: keep it short enough to read on a phone, lead with the most interesting word rather than a throat-clearing preamble, and make sure the email delivers exactly what the subject promised. The preview text — the snippet shown after the subject — is a second headline most senders waste; use it to extend the promise, not repeat it.

Write like a person, to a person

The emails people actually read sound like they came from someone, not from a marketing department. Write to one reader, in plain language, as though you were emailing a single customer you like. That means a real sender name, a conversational tone, and getting to the point quickly — respect that the reader is busy.

• One email, one purpose. Trying to say five things means none of them land. Decide the single thing you want the reader to know or do.
• Make it genuinely useful more often than promotional. If every email asks for something, people tune out. If most emails give something — a useful tip, a relevant heads-up — they keep opening, and the occasional ask lands far better.
• One clear call to action. Tell the reader the single next step you'd like them to take, and make it obvious.

Timing, frequency, and consistency

Consistency beats intensity. A short, useful email that arrives predictably — say, the same day each month — builds a habit and a relationship. Sporadic bursts followed by long silences train people to forget you, so that when you do email, it feels like an interruption. Pick a cadence you can genuinely sustain and hold it. It's better to send a good email monthly forever than a brilliant one weekly for two months and then stop.

As for the best day and time — the honest answer is that it depends on your audience, and the only reliable way to know is to test with your own list rather than trust generic advice.

Measure what tells you something

Watch open rates and click rates over time as a trend rather than obsessing over any single send — and treat unsubscribes and spam complaints as the real warning signs. A rising unsubscribe rate is your audience telling you the emails aren't worth their inbox space; listen to it before your deliverability suffers. Test one thing at a time — a subject-line style, a send day, a format — so you actually learn what moves the needle for your particular readers.

Done with care, email becomes a compounding asset: an audience that trusts you, hears from you regularly, and buys when they're ready. For how it fits alongside your other demand-generation work, see our Growth hub. This is general marketing guidance; for the consent and unsubscribe rules, the ACMA's Spam Act resources are the authority.