Email Marketing Best Practices: How to Use Newsletters and Campaigns Effectively

One of my favorite nerdy hobbies is to subscribe to random websites just to study their email marketing. 

Some I subscribe to some because I’m personally interested in the content. Others I subscribe to so I can study how they do it and learn from it. You could say I’m a connoisseur of email marketing best practices.

One question I get a lot from my small business clients is what’s the difference between email newsletters and email campaigns.

On the surface, they look similar. Both land in an inbox. Both arrive because you signed up to receive them. 

But they serve completely different purposes, and mixing them up is one of the fastest ways to lose a subscriber forever.

Because once they're gone, they're gone. So let's get this right.

Email Marketing's Golden Rule: Respect the Inbox

Before we get into tactics, think about your own inbox. 

The average person receives dozens — sometimes hundreds, thousands — of emails a day. I personally find it stressful when my unread count climbs past 100. 

Sometimes, it feels like a full-time job just staying on top of it, and I do my best to ruthlessly prune anything that isn't earning its place in my inbox.

Most of your subscribers feel exactly the same way.

This means every email you send needs to clear a very high bar: Is this worth their time? If the answer isn't an immediate yes, you're one click away from the unsubscribe button. 

And unlike social media, where an unfollow is fairly casual, an email unsubscribe is permanent. There's no algorithm that might resurface your content later. They made a decision, and they're done.

Before you send a single email, it's worth knowing that email marketing is regulated. The US, Europe and Canada all have rules around consent, opt-outs, and how you identify yourself. Ignoring them can cost you more than just subscribers. (See below for more on this.)

The good news is that getting email marketing right isn't complicated. It mostly comes down to knowing what you're sending and why.

What Is an Email Campaign?

An email campaign is specific, time-bound, and built around a single call to action. Its entire purpose is to move a reader toward doing something: booking a call, making a purchase, registering for an event, downloading a resource. Everything in the email should serve that one goal.

Campaigns are typically a series of emails (though they can be a single send) that walk a reader through a progression. A well-structured 8-email campaign, for example, might look something like this:

• Email 1: Welcome and brand introduction. Who you are and what you stand for

• Email 2: The problem. Name the pain point your audience is dealing with

• Email 3: The solution. Introduce your product or service as the answer

• Email 4: Social proof. Testimonials, case studies, real results

• Email 5: Address objections. Tackle the "but what about..." hesitations

• Email 6: Deep dive. A story, a feature, or a use case that builds desire

• Email 7: Urgency. A deadline, limited spots, or a bonus that's expiring

• Email 8: Last chance. Simple, direct, one final nudge

Campaigns are typically triggered by a specific action or targeted at a specific audience segment. Common examples include:

• People who gave their email address in exchange for a lead magnet

• New newsletter subscribers getting a welcome sequence

• Trial users who haven't yet converted to paying customers

• Lapsed customers who haven't engaged in several months

• Event attendees being nurtured post-webinar

• Contacts who clicked a link but didn't convert

• High-value customers being introduced to an upsell

My personal philosophy on campaigns is to keep them brief and get to the point. One CTA, no competing links, no distractions. The email has one job. Let it do it.

What I don't like — and what leads me to unsubscribe — are campaign emails that are long, meandering, and unclear about what they want me to do. 

Some don't even have a CTA. I've genuinely stared at emails wondering: what is the point of this? In most cases, it's a misapplication of newsletter thinking inside a campaign format. Someone sat down to write a nurture email and accidentally wrote a magazine column.

Give me a series. Make it tight. Then give me a break. If you want to come back to me a few months later with something new, great. But the longer you linger in my inbox without a clear purpose, the easier it is to ignore you.

What Is an Email Newsletter and How Is It Different from a Campaign?

A newsletter is not a campaign. It is not time-bound. It is not built around a single CTA. It is an ongoing relationship.

The purpose of a newsletter is to stay in front of your audience consistently, give them value, and create multiple entry points back to your website or content. 

Think of it as a curated grab bag: a timely theme, a recent blog post, company news, a tip or resource, something that made you think. The goal is variety, something for everyone, not everything for one person.

Unlike campaigns, newsletters can (and should) have multiple links. You're not funneling people toward one action; you're offering a menu. Readers self-select what's relevant to them.

A few things I've learned from studying newsletters obsessively:

• Frequency matters — a lot. Once a month is sustainable and respectful. Twice a month is fine if your content is genuinely strong. More than that, and you better be very, very good.

• The longer the newsletter, the less often people want to see it. A long, beautifully curated monthly digest works. A long weekly newsletter is a commitment most readers won't make.

• "Here's what I did this week" is not a newsletter. It's a diary entry. If it's not giving your reader something they can use, learn from, or find interesting, it will usually get cut.

• Consistency beats frequency. Showing up reliably every month is more valuable than showing up erratically every week.

Email Marketing Best Practices for Small Businesses

Here's the thing I keep seeing: businesses that treat their newsletter like a campaign, and campaigns like newsletters. The result is a reader who doesn't know what to expect, doesn't know what to do, and eventually stops opening.

A newsletter that always has a heavy sales push starts to feel exhausting. A campaign that meanders with multiple links and no clear CTA fails to convert. Each format has its own logic, and when you honor that logic, readers know what they're getting. They also trust you more for it.

The clearest sign someone has conflated the two? A campaign email that goes on forever with no CTA, sent to an entire list with no segmentation, on a schedule that has nothing to do with where the reader is in their journey. I’ll unsubscribe to these every time.

How Often Should Businesses Send Marketing Emails?

One of the most common email marketing mistakes I see is simply sending too much. I get it, there's pressure to stay visible, to nurture your list, to not let subscribers forget you exist.

But more is not better. Relevant is better.

For campaigns: be obviously time-bound. "This is your last chance" should mean it's actually the last email, not one of seven more. Readers are smart. When urgency is manufactured and infinite, it stops working.

For newsletters: a useful rule of thumb is that the longer you linger without adding value, the easier it is to ignore. Find your cadence, stick to it, and make every send count.

Email Marketing Law: What Every Small Business Needs to Know

This part isn't glamorous, but it matters. There are legal requirements around email marketing when it becomes spam:

• CAN-SPAM Act (US): All commercial emails must include your physical mailing address, a clear way to unsubscribe, and must honor opt-out requests within 10 business days. Subject lines cannot be deceptive.

• GDPR (EU): If you have any subscribers in Europe, you need explicit consent to email them. "Soft opt-ins" or pre-checked boxes don't cut it. You also need to be transparent about how you use their data.

• CASL (Canada): One of the strictest in the world. You need express or implied consent before sending commercial messages to Canadian recipients.

In addition to legal requirements, permission-based marketing is all about strategy. Bought lists, scraped emails, and "everyone who ever gave us a business card" approaches will tank your deliverability and damage your sender reputation.

Make unsubscribing easy. I know it feels counterintuitive, but a clean, engaged list is worth far more than a large, disengaged one. If someone wants out, let them go gracefully.

Keep your list clean. Remove hard bounces promptly and regularly sunset subscribers who haven't opened in 6-12 months. Your deliverability depends on it.

The Bottom Line

Email marketing is one of the most powerful tools a small business has. It’s direct, personal, and completely owned by you (unlike social media, where the algorithm decides who sees your content). But that power depends entirely on using it with intention.

Know what you're sending. Know why you're sending it. Know who you're sending it to. And above all, be respectful of the inbox you're entering.

Your subscribers let you in. Don't make them regret it.

Frequently Asked Questions

What is the difference between an email newsletter and an email campaign?

An email newsletter is an ongoing communication designed to build a relationship with your audience over time, while an email campaign is a targeted, time-bound sequence of emails built around a single call to action, like booking a call, making a purchase, or downloading a resource.

How often should small businesses send marketing emails?

For newsletters, once or twice a month is a sustainable cadence for most small businesses. For campaigns, keep them clearly time-bound with a defined beginning and end. The rule of thumb: the longer you linger in someone's inbox without adding value, the easier it is to ignore.

What happens if you mix up email newsletters and campaigns?

When the two formats get conflated, readers don't know what to expect, and confused readers unsubscribe. A newsletter that constantly pushes a hard sell feels exhausting; a campaign that meanders with no clear CTA fails to convert. Each format has its own logic, and mixing them up undermines both.

Is email marketing legal, and what do small businesses need to know?

Yes, but it's regulated. In the US, CAN-SPAM sets rules around opt-outs and sender transparency. GDPR governs email marketing to EU subscribers, requiring explicit consent. Canada's CASL is among the strictest, requiring express permission before sending commercial messages. Every small business should understand the laws that apply to their audience.

What is the most important email marketing best practice for small businesses?

Respect your subscriber's inbox. Every email you send is competing for attention in a crowded space. If your content isn't genuinely valuable to the reader — not just useful to you — they will unsubscribe, and unlike social media, there's no algorithm that brings them back.

---

Got questions or want to talk through your content strategy? Book a free 30-minute call with me. I'd love to help.

Book a Call

Milly Skiles is the founder of Drifter Content, a boutique content marketing consultancy serving small businesses and startups. She offers content strategy consulting, workshops, and ongoing execution partnerships for teams that need senior-level expertise without a full-time hire.