Types of Email Marketing: The Campaigns That Work

What are email marketing tools?

Email marketing tools, often called email service providers (ESPs), are platforms that manage your subscriber list, build and send campaigns, automate sequences, and track how they perform. They’re what make email marketing’s strong return, around $36 for every $1 spent, achievable at scale (Litmus). Trying to run email marketing from a personal inbox breaks almost immediately; a dedicated tool handles the list management, deliverability, automation, and analytics that the channel depends on.

Key Takeaways

• Email marketing tools (ESPs) manage your list, build and send campaigns, automate sequences, and measure results in one place, which is what makes email’s ~$36 return per $1 achievable at scale (Litmus).
• You need one because a personal inbox can’t handle list management, deliverability, compliance, or tracking at scale (HubSpot).
• The features that matter most are automation, segmentation, templates, analytics, deliverability, and integrations.
• The right tool depends on your list size, budget, whether you sell products, and how much automation you need.
• Most providers offer free or low-cost entry tiers, so you can start without upfront cost (Mailchimp).

This guide covers what these tools do, the features to look for, the leading options, and how to choose. It’s part of our email marketing cluster, alongside the overview of what email marketing is and the guide to the types of email campaigns you’ll run with them.

Why do you need an email marketing tool?

You need an email marketing tool because email marketing involves things a regular email account simply can’t do: managing thousands of subscribers, sending at scale without being flagged as spam, automating sequences, and tracking opens and clicks (HubSpot). The moment your list grows beyond a handful of people, doing it by hand becomes impossible and risky.

There are concrete reasons a dedicated platform is essential. Deliverability is the first: ESPs maintain the sending infrastructure and reputation that gets email into the inbox rather than the spam folder, something a personal account can’t replicate when sending in bulk. Compliance is the second: they handle unsubscribe links, consent records, and the legal requirements of CAN-SPAM and GDPR automatically. Automation is the third: they let you trigger sequences based on behaviour without manual sending. And measurement is the fourth: they track exactly how each campaign performs so you can improve. Together, these turn email from an impossible manual chore into a manageable, measurable channel.

What features should you look for in an email marketing tool?

The features that matter most are automation, segmentation, templates, analytics, deliverability, and integrations, because these are what turn a list into an effective programme (Mailchimp). Not every business needs every feature, but understanding them helps you match a tool to your goals. The table below covers the essentials.

When you evaluate tools, weigh these against your actual needs. A content business leans on templates and segmentation; an online store needs deep ecommerce integration and automation; a small newsletter may need little beyond a clean editor and reliable sending. Match the feature set to the job rather than chasing the longest feature list.

What are the top email marketing tools?

The leading email marketing tools include Mailchimp, Brevo, MailerLite, HubSpot, ActiveCampaign, Klaviyo, and Kit (formerly ConvertKit), each suited to a different type of business (Mailchimp). There’s no single best tool; the right one depends on what you sell and how you work. Here’s how the main options compare.

A few notes help you read that table. Mailchimp is the common starting point because of its free tier and ease of use. Brevo’s send-based pricing suits businesses with large lists they email infrequently. Klaviyo is purpose-built for online stores and integrates tightly with ecommerce platforms. ActiveCampaign and HubSpot go furthest on automation and CRM, which matters as a business grows. Kit is built around creators and newsletters. Most offer free trials or free tiers, so you can test the fit before committing.

How do you choose the right email marketing tool?

You choose the right tool by matching it to four things: your list size, your budget, whether you sell products online, and how much automation you need (HubSpot). Starting from your own situation, rather than a “best tool” list, leads to a better decision.

Work through these questions in order. How big is your list, and how fast is it growing? Pricing usually scales with contacts, so this drives cost. What’s your budget, and does the free tier cover you for now? Do you sell products online? If so, ecommerce integration (and a tool like Klaviyo) may matter more than anything else. How much automation do you need, a simple welcome email, or complex behaviour-triggered journeys? And how important is ease of use versus depth, since the most advanced tools are often the steepest to learn. Finally, check that the tool integrates with what you already use, your website platform, CRM, and store. The best choice is the simplest tool that covers your needs today and can grow with you, not the one with the most features.

How much do email marketing tools cost?

Most email marketing tools use a tiered model with a free or low-cost entry plan, then pricing that rises with your number of contacts or the volume you send (Mailchimp). This means you can almost always start for free and only pay as your list and results grow, which keeps the channel low-risk to begin.

The two common pricing models are worth understanding. Most providers charge by the number of contacts on your list, so costs rise as you grow your audience regardless of how often you email them. A few, such as Brevo, charge by the number of emails sent instead, which suits businesses with large lists they contact infrequently. Free tiers typically cap your contacts or monthly sends and may add the provider’s branding, which is fine when starting out. As you scale, paid tiers unlock more contacts, advanced automation, better analytics, and removal of branding. Because pricing and plan names change regularly, check the current details on each provider’s site before deciding, and factor in how your cost will grow as your list does.

What are the benefits of using a dedicated email tool?

The main benefits are better deliverability, time saved through automation, and the insight to improve, none of which you get from a personal inbox (Litmus). These are what make the channel’s strong return possible in practice.

Better deliverability comes from the provider’s maintained sending reputation and built-in authentication, so more of your email reaches the inbox. Time saved comes from automation and templates: you build a welcome series or a newsletter template once and reuse it indefinitely. Insight comes from analytics that show exactly how each campaign performed, turning guesswork into informed decisions, which feeds directly into the work covered in our guide to measuring and analysing email performance. On top of these, a good tool handles compliance and list management quietly in the background, so you can focus on the message rather than the mechanics. For any business serious about email, a dedicated tool isn’t an optional extra; it’s the foundation.

How do email marketing tools handle deliverability and compliance?

Email marketing tools handle deliverability and compliance largely behind the scenes, which is one of the biggest reasons to use one rather than a personal inbox (HubSpot). These are the hardest parts of email to get right alone, and a good ESP builds them in.

On deliverability, a provider maintains the sending reputation and infrastructure that get email into the inbox, and walks you through authenticating your domain with SPF, DKIM, and DMARC, the records that prove your email is genuinely from you and that inbox providers increasingly require. On compliance, the tool adds the unsubscribe link every marketing email legally needs, processes opt-outs automatically so you can’t accidentally email someone who left, and keeps records of consent that help you meet GDPR and CAN-SPAM obligations. It also manages bounces and inactive addresses, which keeps your list clean and your reputation healthy. None of this is glamorous, but it’s what stands between your campaign and the spam folder, and doing it manually at scale is effectively impossible.

How do you migrate from one tool to another without hurting deliverability?

You migrate safely by exporting your list, importing it cleanly into the new platform, re-authenticating your sending domain, and warming up your sending gradually rather than blasting your whole list on day one (HubSpot). Switching ESPs is common as a business grows or outgrows its first tool, but a careless move can land your email in spam precisely when you’ve invested in a better platform.

The steps that protect deliverability are worth following in order. Export your subscribers, ideally with their engagement history, and import them into the new tool, suppressing anyone who has unsubscribed so you don’t accidentally re-add them. Set up domain authentication, SPF, DKIM, and DMARC, on the new platform before you send anything, because a new sender without those records is far more likely to be filtered. Then warm up: start by sending to your most engaged subscribers and increase volume over days or weeks, since a sudden spike of mail from a new provider looks like spam to inbox providers. Rebuild your automations, templates, and integrations, and test thoroughly before switching over fully. Done methodically, a migration costs effort but not reputation; rushed, it can undo months of inbox placement.

What are email warm-up tools, and when do you need them?

Email warm-up tools gradually build the sending reputation of a new domain or address by ramping up volume and engagement over time, and you need one whenever you start sending from a fresh domain or move to a new platform (Google). Inbox providers distrust senders with no track record, so a brand-new domain that suddenly sends thousands of emails is treated as a likely spammer.

Warm-up works by sending small, increasing volumes to engaged recipients first, which signals to providers like Gmail that real people want your mail. Some teams use dedicated warm-up services that automate the ramp; many simply do it manually, starting with their most active subscribers and increasing volume steadily over two to four weeks. This matters most for businesses that send marketing from a separate subdomain (a common best practice that shields the main domain’s reputation) and for anyone who has just migrated ESPs. Google’s own bulk-sender guidelines stress consistent volume and proper authentication as the foundation of inbox placement (Google). The simplest rule: never send your largest campaign from a domain with no sending history, build up to it.

What mistakes should you avoid when choosing a tool?

The most common mistakes are over-buying for features you won’t use, ignoring how pricing scales, and choosing a tool that doesn’t integrate with what you already run (Mailchimp). Each one costs you either money or momentum.

Over-buying is the frequent trap: an advanced automation-and-CRM platform is wasted, and harder to learn, if all you need today is a newsletter and a welcome email. Underestimating how cost grows is the opposite error, since contact-based pricing can climb sharply as your list expands, so model your likely cost a year out, not just today. Overlooking integrations bites later: if the tool doesn’t connect cleanly to your website, store, or CRM, you’ll either lose data or do tedious manual work. And chasing the longest feature list rather than the right features means paying for complexity you don’t need. The way to avoid all of these is to start from your own requirements, test a free tier or trial, and choose the simplest tool that covers what you need now while leaving room to grow.

Final thoughts

An email marketing tool is the engine of the channel: it manages your list, sends your campaigns, automates your sequences, and tells you what worked. Choosing one comes down to your own situation, your list size, budget, whether you sell products, and how much automation you need, rather than any universal “best” pick. Start with a free or low-cost tier that covers you today, make sure it integrates with what you already use, and choose something that can grow with you. With the right tool in place, the work shifts to the part that actually matters: sending relevant emails to the right people, which is where our guides to what email marketing is and the types of email campaigns come in.