The Ultimate Guide To Email Marketing.

Last updated: September 2026

Email marketing is the practice of sending commercial messages to people who have agreed to hear from your business. In Australia, email marketing is governed by the Spam Act 2003, so consent, sender identification and a working unsubscribe are legal requirements rather than best practice. DigiFix runs email campaigns for Melbourne businesses from its office in Clayton.

Key takeaways

• The Spam Act 2003 gives every Australian sender three duties: get consent, identify yourself accurately, and provide an unsubscribe that works.
• The Australian Communications and Media Authority requires unsubscribe requests to be honoured within 5 working days, and your contact details to stay accurate for at least 30 days after the send.
• Australians are noticing. In the OAIC’s Australian Community Attitudes to Privacy Survey 2026, 41 per cent named being unable to unsubscribe from marketing as a privacy concern they experienced in the past year, up from 25 per cent in 2023.
• Penalties are real and recent. Lululemon paid $702,900 in March 2026 for sending more than 370,000 emails without an unsubscribe option.
• Gmail expects senders to authenticate their domain and keep spam complaints below 0.30 per cent, which is three people in every thousand.

What is email marketing?

Email marketing is the practice of sending commercial messages to a list of people who have agreed to receive them. The message might be a weekly newsletter, a single promotion, a welcome sequence for new subscribers, or a nudge to a customer who has not bought anything since autumn. In Australia the law calls any of these a commercial electronic message, and the same rules apply whether you send five or five thousand.

Two things are required to run email marketing. The first is software that sends, schedules and tracks the emails. The second is a mailing list of people who chose to be on it.

Everything else is detail. Without consent the campaign is illegal in Australia. Without a list worth sending to, the software is a subscription with nothing to do.

What are the legal rules for email marketing in Australia?

Australian email marketing is regulated by the Spam Act 2003 and enforced by the Australian Communications and Media Authority, which reduces the law to three duties: get consent, identify yourself, and let people unsubscribe. In its guidance for businesses, the ACMA sets out that consent can be express, such as a signup form, a ticked box or a request made over the phone or face to face, or inferred from an ongoing relationship, and describes express consent as best practice while inferred consent is not as reliable.

Three details catch small businesses out more than anything else. You cannot send an email asking for consent, because that email is itself marketing. Your business name or your name plus ABN must be in the message and stay correct for at least 30 days after you send it. And the unsubscribe has to be honoured within 5 working days, work for at least 30 days, cost nothing, and never require someone to log in or create an account to use it.

The burden of proof sits with the sender. If you bought the list, rented it, or inherited it from a business you acquired, the ACMA still expects you to prove each person on it consented.

Here is the part most agencies leave out. Compliance is not only a legal question, it is a conversion question. The OAIC’s Australian Community Attitudes to Privacy Survey 2026, which surveyed 1,504 Australian adults in March 2026, found that 41 per cent had experienced being unable to unsubscribe from marketing as a privacy concern in the previous 12 months, up from 25 per cent in 2023, and that 68 per cent of Australians accept data collection where consent or an opt-in is available.

Read those two findings together. A clean opt-in and an easy unsubscribe are the two things your audience has told the national privacy regulator they want. Doing the legal minimum badly is what makes people press the spam button, and the spam button is what breaks your deliverability.

What happens if a business breaks the spam rules?

The ACMA fines businesses, and the fines are not symbolic. In March 2026 the regulator announced that Lululemon Athletica Australia paid a $702,900 penalty for sending more than 370,000 emails with commercial content and no way to unsubscribe, and noted that businesses had paid over $6.7 million in spam penalties across the preceding 18 months.

What makes that case useful to a small business is how ordinary the mistake was. Lululemon put promotional links inside shipping and order confirmation emails, then treated those emails as service messages that did not need an unsubscribe. The ACMA’s position is that if a message carries any promotional content, the message is commercial regardless of what else it does.

The practical rule for your own account: either keep sales content out of your transactional emails, or give those emails an unsubscribe too. A discount code tucked into a booking confirmation is exactly the kind of thing that turns a service email into a commercial one.

What types of marketing emails should a business send?

Most small businesses only need four or five email types, sent reliably, rather than a large automation map nobody maintains. The table below sets out what each type does and when to send it.

The re-engagement email is the one businesses skip, and it is the one that protects everything else. Removing people who never open your email lifts the performance of the list you keep.

How do you build an email list without buying one?

You build an email list by giving people a specific reason to hand over their address and a clear statement of what you will send them. A lead magnet is the usual mechanism: a checklist, a pricing guide, a template, a short course or a discount on a first order, offered free in exchange for an address. It only works when the thing being offered solves a problem the reader has today.

For a shopfront, the highest-yield collection point is the counter and the checkout, with an unticked box and a plain sentence about what the subscriber will receive. For a service business, the strongest one is usually the quote or booking form. Both beat a newsletter box in the website footer, which tends to collect competitors and nobody else.

Buying a list looks like a shortcut and behaves like a liability. The table below compares the two routes on the things that decide whether an email campaign makes money.

Why do marketing emails land in spam?

Marketing emails land in spam when the sending domain is not authenticated, when the unsubscribe is hard to find, or when enough recipients press the report spam button. Google publishes exactly what it expects. In its email sender guidelines, Google requires the sending domain to pass DMARC alignment through SPF or DKIM, requires marketing messages to support one-click unsubscribe with a visible unsubscribe link in the body, and tells senders to keep the spam rate reported in Postmaster Tools below 0.30 per cent. The stricter bulk sender requirements apply from around 5,000 messages a day.

Most Australian small businesses never reach 5,000 sends a day, which creates a false sense of safety. Authentication is now the baseline expectation for everyone, and 0.30 per cent is only three complaints in a thousand emails.

Four fixes handle most inbox problems. Send from your own domain rather than a free Gmail or Hotmail address. Set up SPF, DKIM and DMARC records with whoever manages your DNS. Put the unsubscribe where people can find it in two seconds. Remove addresses that have not opened anything in a year, even though watching the list count go down feels like going backwards.

What does a first email campaign look like in Melbourne?

Picture an independent homewares shop in Yarraville. The owner has about 1,800 past customers sitting in the point of sale system, a quiet Instagram account, and has never sent a marketing email because the whole thing looks like a legal risk wrapped in software she does not have time to learn.

Here is what DigiFix would do, in order.

Weeks 1 and 2: pick the sending platform, connect it to the point of sale, authenticate the shop’s domain with SPF, DKIM and DMARC, and split the 1,800 records into people who gave express consent at the counter and people who did not.

Weeks 2 to 6: add an unticked signup box at the counter and on the online checkout, write a welcome email that goes out automatically, and run a single re-permission email to the uncertain group so the list that remains is one the shop can prove.

Weeks 4 to 8: send the first two real campaigns, one seasonal promotion and one newsletter, and watch clicks and in-store redemptions rather than opens.

The cost of doing nothing is quiet. Those 1,800 people already bought once, already liked the shop enough to walk in, and are currently being reminded of a competitor every time that competitor sends a newsletter on a Thursday morning.

How do you measure whether email marketing is working?

Measure email marketing on clicks, replies and money, and treat everything else as diagnostic. The open rate is the least reliable number on the dashboard, because mail providers that pre-load images register an open the recipient never made. A campaign with a 60 per cent open rate and four clicks did not work.

Four numbers are worth reporting every month: click rate, revenue or bookings traced to the send, unsubscribe rate, and spam complaint rate. The last one is the early warning. If complaints creep towards Google’s 0.30 per cent ceiling, deliverability problems are already in motion even though nothing looks broken yet.

Compare each campaign against your own previous sends rather than a published industry average. Averages mix retail with software and charity with finance, and none of them describe a homewares shop in Melbourne’s inner west. Email marketing also rarely works alone, which is why it sits alongside search and social in a plan. DigiFix covers that trade-off in its guide to inbound versus outbound marketing, and the words themselves matter as much as the channel, which is the subject of the DigiFix guide to website copywriting services in Melbourne.

What do Australian businesses ask about email marketing?

Where should your business go next?

If your email list is small or non-existent, the first job is collecting addresses properly rather than choosing software. If the list already exists but has never been emailed, start with consent records and domain authentication before writing a single campaign.

The DigiFix blog covers the channels email marketing works alongside, and the DigiFix portfolio shows completed work for Australian businesses. If you would rather talk to the people who would run the campaigns, start on the About DigiFix page.