Email marketing sends targeted messages to promote products, nurture leads, and turn subscribers into customers. It remains one of the most cost-effective channels available, and launching your first campaign takes five steps: strategy, platform, list, design, and deliverability.

What is email marketing? A quick definition

Email marketing is a form of digital marketing that sends targeted emails to promote products, share updates, or nurture leads. It works by building a list of people who’ve opted in, then sending content matched to their behavior, interests, or place in the customer journey. That’s what separates it from a broadcast channel: every message can be different depending on who’s reading it.

Why is email marketing important? Cost, ROI, and reach

Email marketing matters because it’s the one channel where you control the cost, own your audience outright, and can measure the return on every single send. The channel earns its reputation on cost. You’re not paying per impression or per click; you’re paying a flat monthly fee for your contact tier, no matter how many emails you send within that plan’s limit. That’s different from paid social or search, where spend scales with reach. The often-cited $42-for-$1 figure is a mature-program average, not a first-year one: realistic email marketing ROI in year one is closer to 100–200%, climbing to 300–500% by year two.

Email also stays useful as other channels get noisier. There’s no algorithm deciding who sees your message, and a list you’ve built is yours to keep even if a platform changes its rules or shuts down. Combined with segmentation and personalization, that direct line to your audience is why email keeps outperforming channels with a higher sticker price.

How to get start email marketinged in 5 steps

Five steps take you from no list to a sent campaign, and none of them need a developer or a design background. Work through them in order: platform and list come before design, so you’re not redoing work once you’ve already built something.

1. Plan your email strategy

Start with a goal. A campaign might aim to generate leads, convert existing leads, re-engage inactive subscribers, or promote a new product; the goal decides everything else about the send. Once you know the goal, define your audience, decide what format and tone will land with them, and pick which metrics you’ll use to judge whether it worked.

2. Choose a platform

An email service provider handles sending, list management, templates, and analytics, so the real decision is which features you need at your budget. SiteGround Email Marketing, for example, comes with a no-code builder, an AI email writer, and AI image generation on every plan, plus automation, segmentation, and built-in analytics, backed by a 98.80% delivery rate. That removes the need for separate design, copywriting, or list-building tools on a first campaign.

3. Build your email list

If you’re emailing existing clients, build your list by importing your contacts directly into the platform. If you’re starting from zero, use SiteGround Email Marketing’s built-in signup forms and subscribe pages to start collecting subscribers right away; on WordPress, the SiteGround Email Marketing plugin adds custom signup forms to your site and connects automatically with form plugins you might already use, like Contact Form 7, WPForms, or Gravity Forms. Then segment your list using the custom fields you collect, such as location, interests, or birthday, so you’re not sending the same email to everyone regardless of what they’ve told you about themselves.

4. Create the campaign

Most platforms include premade templates, so building an email doesn’t require HTML or a designer. SiteGround Email Marketing gives you a library of these to start from, then lets you customize colors, layout, and images in the no-code builder. The Generate with AI feature makes this even easier: describe what you want in a short prompt, and it builds the whole email for you, layout, copy, and images included, so you’re editing a finished draft instead of starting from a blank page.

5. Get deliverability right before you send

None of the above matters if the email lands in spam. Skipping domain authentication is the single most common reason a new sender’s first campaign never reaches the inbox, not a weak subject line. Before you send anything, walk through our full email deliverability guide, which covers the technical setup that protects your sender reputation from day one.

Main types of marketing emails

There are more than a dozen specific types of marketing emails, but most fall under a few core categories:

• Welcome emails. The first message a new subscriber or customer gets, timed to arrive immediately after signup.
• Promotional emails. Built around a specific offer or sale, with one clear call to action.
• Informational and retention emails. Newsletters, how-to content, and updates that keep subscribers engaged between purchases.
• Event-triggered and transactional emails. Automated sends tied to a specific action, like an abandoned cart, an order confirmation, or a password reset.

For the full breakdown, including subtypes and when to use each one, see The 13 essential types of emails explained simply.

What drives email engagement

Three things decide whether a campaign performs: permission, relevance, and frequency. 

1. Permission comes first. A double opt-in signup (built into SiteGround Email Marketing, so you don’t have to set it up separately), where a subscriber confirms via a follow-up email, keeps your list built from people who actually want to hear from you, which matters more for deliverability than any subject line trick. Buying a list skips this step entirely and usually costs more in bounce and spam complaint rates than it saves in time.
2. Relevance is where segmentation and personalization pay off. Messages built around a subscriber’s actual behavior consistently outperform generic blasts, and something as simple as using a name or referencing a past purchase raises the odds an email gets read. This is also where the email customer journey matters: a welcome email, a re-engagement email, and a win-back email are solving different problems for the same subscriber at different points in time.
3. Frequency is the one most businesses get wrong in both directions. Too many sends and unsubscribe rates climb; too few and subscribers forget who you are. Test a schedule, watch the results, and adjust; there’s no universal right number, only the one that fits your audience.

Common email marketing mistakes to avoid

A few mistakes come up more than the rest, out of the worst email marketing mistakes beginners tend to make:

• No plan after the welcome email. The mistake isn’t a bad signup form. It’s collecting emails with nothing lined up to send next, so the list goes cold within weeks and engagement quietly drops on every send that follows.
• Treating every subscriber the same. A customer who bought last week and a lead who signed up for a discount code are in completely different stages, and sending them identical content wastes the segmentation data you already have.
• Skipping list maintenance. Inactive subscribers and invalid addresses drag down your open and click-through rates over time, which can hurt deliverability for your entire list, not just the inactive portion of it.

None of these are hard to fix once you know to look for them; the damage comes from not noticing until the numbers have already dropped.

What email marketing metrics to check after you hit send

Your first campaign doesn’t need an A/B test. It needs four numbers checked within a day or two of sending, so you know whether to change anything before campaign two.

Metric	What it tells you
Open rate	Whether the subject line got attention
Click-through rate	Whether the content and call to action worked once people opened it
Conversion rate	Whether the send hit the goal you set in step one, a sale, a signup, or a download
Bounce rate	List health. A high bounce rate on a first send usually means the list was built or imported carelessly, not that the email itself was weak

A weak open rate points at the subject line. A weak click-through rate with a healthy open rate points at the content or the CTA, not the subject line. Reading the two numbers together is what tells you which part to fix first, instead of rewriting the whole email and guessing again. These four are the starting point; once you have a handful of sends to compare, the rest of the email marketing metrics worth tracking will tell you more than any single campaign can on its own.

Ship it, check the numbers, improve campaign two

Your first campaign won’t be your best one, and that’s fine. The four numbers above exist to tell you what to fix, not to grade you on effort. Send it, check the numbers, and let campaign two be the one that’s actually optimized.

SiteGround Email Marketing keeps the whole loop, sending, tracking, and fixing, in one place, so you’re not piecing it together across separate tools.

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This article was originally posted in December 2024 and updated in September 2026.

Frequently asked questions about getting started with email marketing