What Is Email Marketing: A Complete Beginner's Guide

Most business owners we talk to say the same thing: I send a newsletter now and then, so I do email marketing. Then we look inside the platform together and find a single type of message, sent to the whole list at once, a few times a year. The part that brings in money is not switched on.

It is not their fault. Email marketing sounds big and technical, and the advice online is written for American stores with lists of a hundred thousand people. This guide is for someone starting from zero or close to it, who wants to know what to do, in what order and what it costs.

Email marketing means using email to build a relationship with people who gave you permission to write to them, and turning that relationship into sales. That is all.

The important part is gave you permission. That is what separates it from spam and from ads. With ads you pay to appear in front of strangers. With email you talk to someone who already raised their hand: they left their address at checkout, signed up for a discount, downloaded something from you. They already know you.

That is where the economics come from. Once you have the list, every message costs almost nothing to send, whether it goes to a hundred people or ten thousand. The list stays yours even if a platform changes its algorithm tomorrow or your cost per click goes up. It is the only channel you truly own.

The difference between the three kinds of channel decides where you put your money.

A paid channel means Meta ads or Google Ads, and the platform controls it: you stop paying, the traffic disappears. A borrowed channel means your Facebook page, your Instagram or TikTok account, and the algorithm controls it: your reach can be cut overnight, with no warning. An owned channel is your email list and your customer base, and there the control is yours: it stays with you no matter what changes outside.

Ads are rent: as long as you pay, you get traffic, and the day you stop, the traffic stops too. A social media page is borrowed space as well, even if you pay nothing for it: you built an audience there that you only see as much as the algorithm wants to show you. The email list is the only one that is property.

This does not mean dropping the first two. Ads and social bring new people in, and email keeps them. The right order is to bring in paid or borrowed traffic, but capture the address before the person leaves, so the second time you do not pay again to reach them.

The newsletter is one part of email marketing, roughly the way a shop window is part of a store. Useful, visible, but not where the money is made.

A newsletter is a message you send, when you decide, to the whole list or part of it. News about a new product, a promotion, a recommendation. It is called a campaign and it works only on the day you press the button.

Email marketing also means the other half: messages that go out on their own, triggered by what the person does. Someone leaves a product in the cart and gets a reminder a few hours later. Someone subscribes and enters a welcome series. Someone has not ordered in two months and gets a reason to come back. These are called automations and they work every day, including Sunday at midnight, without you touching them.

The difference shows in the results. At Omnisend, automated emails had open rates 52% higher and click rates 332% higher than regular campaigns. That is because they arrive exactly when the person was thinking about your product, not on Tuesday at ten because that is when you had time.

The practical conclusion for someone starting out: if you have to choose between writing this month's newsletter and switching on your first automation, switch on the automation.

The return reported by companies is between 10 and 36 dollars for every dollar spent, and 35% of them land in that range (Litmus). It is a wide interval, and it stays wide, because the result depends on what you sell, how clean the list is and whether your automations are running.

The number worth remembering is a different one, because it tells you where to look: in 2024, automated emails generated 37% of all sales made through email (Omnisend). Over a third of the money comes from messages you build once.

Here is an example that is easy to see in a store. The average cart abandonment rate is 70.22%, according to Baymard Institute, which aggregates 51 studies. Out of ten people who put something in the cart, seven leave without buying. Each of those seven got to the last step and stopped there. A sequence of two or three emails brings them back, and you do not pay again for every click.

For a store with 200 orders a month and an average cart of 250 lei, even a modest recovery rate means a few thousand lei a month from messages written once.

A campaign, meaning the newsletter or the promotion, goes out when you decide. It is good for announcements, offers and a long term relationship, and the effort repeats every time.

An automation, also called a flow, is triggered by something the customer does. It sells at the right moment, and the effort happens once, when you build it.

The basic automations, in the order worth switching them on: Abandoned cart, the fastest return of them all. Welcome series, for the first days after signup, when the person is most interested in you. Post purchase, which turns a buyer into a returning customer. Win back, for those who have gone quiet for a month or two.

The actual copy for the abandoned cart flow and the full list of flows, with what triggers each one, are in the other two guides on this blog: the abandoned cart recovery guide and the one on the 7 email marketing automations.

1. Pick a platform and connect your store or site. Do not spend weeks comparing. Almost any serious platform does what you need at the start. Connecting matters more than choosing: without it, the platform does not know who bought what and cannot trigger anything.

2. Collect addresses with people's consent. A form on the site, a box at checkout, something useful you give in exchange for the address. Never buy lists. A bought list destroys your sender reputation in days, and reputation is hard to repair.

3. Switch on your first automation, not your first newsletter. If you sell online, start with the abandoned cart. If you do not sell online, start with the welcome series. One flow set up properly is worth more than three months of newsletters.

4. Look at orders, not opens. Open rate is the most misleading number in email marketing. A message opened by 40% of the list that sells nothing is weaker than one opened by 15% that brings orders. The right question is how many bought, not how many opened.

Only after those four are running does it make sense to think about segmentation, subject line tests or the tools that use artificial intelligence.

The structure that works is always the same, whatever the industry.

The subject line has one job: to get the message opened. It works best when it is short and specific, between four and eight words, and when it promises exactly what is inside. You left something in your cart beats Do not miss our special offer, because the first one says something true about the person reading it.

The sender name matters more than people think. A person's name or a recognisable company name gets opened more often than a generic address. This is also the mistake we see most: the noreply sender. You are telling the customer you do not want them to reply, and email providers treat those addresses with more suspicion.

The first line shows up in the inbox, next to the subject, in almost every email client. It is selling space that most people waste on If you cannot see this message properly, click here.

The body has to be short and lead to a single action. Three paragraphs and a button. When you put three buttons leading to three places, the person picks none of them.

One call to action. This rule is the most broken and the simplest. Every email has one thing you want the reader to do. The rest gets cut.

You can write the best message in the world, and if it lands in Promotions or in Spam, it does not matter. Deliverability is the technical part beginners discover late, usually after something stops working.

Three things decide it, in order of importance.

1. Domain authentication. Providers want proof that you are allowed to send on behalf of your domain. It is done once, at setup, through three records in your DNS zone. Since 2024, Google and Microsoft reject messages that do not have them configured correctly, and the thresholds have tightened since. If you are already sending and do not know whether you have them, that is the first thing to check.

2. Who opens and who complains. Providers watch how people react. If your list opens and clicks, you land in the main tab. If half the addresses are dead and a few mark your messages as spam, you drop. This is where the rule comes from: never buy lists, and clean out addresses that have not opened anything in a year.

3. What you write. It matters less than people think, but it still matters. A message made of one big image, full of capitals and exclamation marks, with five shortened links, looks exactly like what the filters are built for.

The good news is that all three are solved once, at the start, and then they keep working. The bad news is that a damaged reputation takes weeks to repair, not days, so it is worth doing right the first time.

The cost splits in two, and the bigger one is not what people expect.

The platform. Almost all of them have a free plan up to a few hundred or a few thousand subscribers. The price goes up with the list, not with the number of messages sent. For a small business starting out, the monthly cost is zero or close to it.

The build. This is where the real effort sits: the technical setup of the domain, connecting the store, writing the flows and testing them. It is a few days of work, done once. After it runs, maintenance is a few hours a month.

The comparison that helps the decision: with ads you pay every month to reach the same people. With email you pay for the build once, and after that every new customer enters the system on their own. That is why the return grows over time instead of flattening out.

The basic rule is simple: you need the person's consent before writing to them commercially, and the consent has to be an action of theirs, not a box you ticked in advance. Every message needs a clear way to unsubscribe, one that actually works.

The fines issued by the Romanian authority usually do not come because someone sent an email. They come because a person asked to be removed and kept receiving messages. What ANSPDCP sanctions in practice, with real cases and amounts, is in the practical GDPR guide for email marketing, also on this blog.

The principles are the same everywhere, but the moments worth writing in differ a lot from one industry to another.

Online stores. The cart, the purchase and the return visit are the three moments that bring money. Tourism, guesthouses and hotels. The season, the direct booking and the guest who has stayed with you before. Salons and appointment based services. The appointment reminder and the client who has not been in for three months.

Each of the three has its own guide on the blog, with the right flows and copy.

Sending everything to the whole list. It is the most comfortable option and the weakest. Someone who bought last week does not need the same message as someone who subscribed two years ago and never ordered.

Starting with the discount. If the first abandoned cart email comes with a discount, you teach the customer to abandon the cart in order to get one. The discount is kept for later in the sequence, if at all.

Waiting for the perfect list. Five hundred subscribers with one flow running beat five thousand with none. Do not postpone the start until the list grows, because the list grows faster once the system works.

Giving up after three weeks. Unlike paid advertising, the effect accumulates over time, as the automations catch everyone passing through them. The first serious results show up in months.

Email marketing is the system that talks to people who already gave you permission, at the moments when they are ready to buy, without you paying again every time. The newsletter at the end of the month is a small piece of it. Over a third of email revenue comes from messages that work on their own, and those get built once.

If you have a list and do not know where to start, we look at what you have now and tell you which flow is worth switching on first. Ask for a free audit from the button below and you get the answer in writing, no strings attached.

Sources: Omnisend, email marketing statistics, for the share of automated emails in email revenue in 2024 and the comparison with campaigns. Litmus, the study on email return on investment, for the range reported by companies. Baymard Institute, for the average cart abandonment rate, aggregated from 51 studies.