5 of the Best Email Marketing Services Reviewed: 2026

Email marketing has long been a popular way for brands to reach their target audiences and offers a host of benefits. The returns for email marketing make for impressive reading, with the average ROI coming in at around $36 for every $1 spent. While the returns may sound promising, many companies find themselves struggling with email campaigns that simply don’t deliver. In reality, running an email marketing campaign can feel complex and a little overwhelming. This is especially true if you’re trying to build a campaign yourself from scratch. Using an email marketing service can help you to overcome the barriers standing between you and a successful email campaign. But first, you need to choose the best email marketing service to help. Keep reading to discover five of the best marketing services available right now to help you decide which one is the perfect option to boost your email campaign success.

1. Instiller: Best White Label Service for Agencies

Instiller boasts a unique offering in the world of email marketing services, as it is the only company that offers a dedicated white label service for agencies. This distinctive offering recognises the need for agencies to create tailored email marketing campaigns for each of their clients, allowing them to customise campaigns seamlessly. Importantly, as Instiller offers a 100% white label service, the email campaigns are fully customisable and for added discretion, Instiller’s branding isn’t mentioned anywhere.

Features included with Instiller include cart abandonment emails, landing pages, and real-time reporting.

Instiller Pros:

• Fully customisable templates
• No limit on the amount of client templates you create.
• Integrates with other apps, including Shopify, Twilio, Salesforce, and Facebook Lead Ads.
• 14-day free trial available, with no need to enter payment details.
• Payment rate adjusted each month according to how many emails are sent to ensure that the service is cost-effective and you don’t pay more than you need.

Instiller Cons:

• Tailored for use by agencies.

2. Brevo: Free Plan Available

Brevo is an email marketing service that has evolved in recent times to include SMS and WhatsApp marketing. One reason that Brevo is a popular choice of email marketing platform is its free plan. The free plan allows you to send a capped number of emails each day and is best for individuals or solopreneurs, rather than larger businesses. To send more emails and to enjoy more features, you will need to sign up for one of Brevo’s four packages, each of which has a distinct offer and benefits. If you choose Brevo, keep in mind that you may need to pay more to exclude the Brevo logo from your emails.

Brevo Pros:

• Free plan available.
• Platform also supports SMS and WhatsApp marketing campaigns.
• Integrates with apps including BigCommerce, WooCommerce, Shopify, and WordPress.

Brevo Cons:

• May need to pay extra to access the features you need.
• Brevo logo included unless you pay extra.

3. Campaigner: New Features Added

Campaigner is a well-established choice of email marketing platform. Campaigner has recently added new features, including e-commerce integration with WooCommerce and BigCommerce. Audience intelligence capabilities are also now available through the AI Insight Builder and Audience Insights features.

One of Campaigner’s biggest strengths is its capabilities when delivering campaigns at scale. However, the interface can be hard to master for beginners, and some users may find it feels a little outdated to use when compared with other email marketing campaign software.

Campaigner Pros:

• New features added.
• 30-day free trial available.
• Good for high-volume email campaigns.

Campaigner Cons:

• No free plan option.
• Complex interface can be challenging for beginners.
• Interface can feel a little clunky and not as sleek when compared with other platforms.

4. iContact: Easy to Use for Beginners

iContact is one of the most established names in the email marketing arena, after entering the scene back in 2003. Unsurprisingly, the platform has gone through changes in that time, including their permanent free-tier. However, a 30-day free trial is still available.

The iContac t interface is easy to use, thanks to the Drag + Drop Builder, making it a helpful platform for beginners. However, the Standard pricing plan has pretty limited features, which may make it necessary to upgrade to a Premium or Custom account to meet your email needs.

iContact Pros:

• Easy to use interface.
• Drag + Drop Builder makes designing emails simple.
• Handy contact management to create custom segments.

iContact Cons:

• Free-tier no longer available.
• Limited features on Standard pricing tier.
• Integrates with fewer apps than many other email marketing platforms.

5. Constant Contact: High Deliverability Rates

Having your carefully-created emails end up in the recipient’s spam folder is the stuff of nightmares for any company embarking on an email marketing campaign. So, finding a way to reduce the chances of this happening is vital. One email marketing platform that can help with this Constant Contact. Constant Contact boasts an impressive inbox rate of 98%, so its deliverability rates are arguably Constant Contact’s biggest benefit. However, if you plan to send large amounts of emails, you will find that the cost of doing this quickly rises due to Constant Contact’s pricing structure.

Constant Contact Pros:

• High deliverability rates.
• Provides phone support during UK office hours.
• All email templates are mobile-ready.

Constant Contact Cons:

• Price plans rise sharply if you have a large amount of contacts.
• Doesn’t offer a free-tier package.
• Automation features are lacking when compared with other email marketing platforms.

Final Verdict

Email marketing is undeniably a powerful way to reach your customers, and can be used in a wide range of ways. However, to get the best returns on your email marketing efforts, using the best email marketing service to facilitate your campaign is a must.

As you can see, the above email marketing companies all have distinct benefits, providing effective ways to get your marketing messages directly into the inboxes of your audience. So, which of these is the best? If you’re looking for a white label email marketing service, Instiller stands out above its competitors. Instiller’s scalability, fair pricing policy, and excellent support make it a winning choice.