What is Mailrelay

Mailrelay is an email marketing platform that lets you create newsletters, capture subscribers, automate campaigns, analyze results, and much more.

If Mailrelay is known for one thing, it is for offering the largest free email marketing account available

The free account allows you to send up to 80,000 free emails every month to a list of up to 20,000 contacts.

But it doesn’t stop there; the platform also expands on these features with landing pages, transactional emails, SMS, WhatsApp, API, SMTP, and human support on all accounts.

If we had to summarize everything Mailrelay offers in a single sentence, although difficult, it would be something like this:

• Mailrelay offers all the essential features to handle your email marketing from start to finish. Without having to pay from day one.

This is very important because many companies want to see results before investing large amounts of time and money.

Below we will look at everything you can get in Mailrelay starting at 0 euros a month.

Mailrelay features by category

· Easy-to-use dashboard

Mailrelay was developed with user-friendliness in mind. That is why the dashboard is so easy to use.

The Mailrelay dashboard includes:

• A general search engine where you can even ‘search’ for actions like ‘Create newsletter’
• Direct links to the most common actions
• A logically organized sidebar menu
• Summary of the most recent statistics
• Access to help options

· Features for creating and sending email marketing campaigns

Mailrelay allows you to:

• Create newsletters with a visual drag-and-drop editor
• Generate newsletter designs using AI
• Use predefined templates
• Use conditional content
• Improve your copy using AI
• Create images using AI, upload your own, or choose from free image repositories (included)
• Custom variables
• Responsive designs
• Version control for newsletters (in case you need to recover a version prior to recent changes)
• Desktop and mobile views

This makes it easy to prepare email campaigns quickly.

And also segment them, to ensure they are more relevant.

Additionally, Mailrelay allows you to:

• Create newsletters from RSS feeds
• Manage multiple senders
• Schedule campaigns
• A/B testing
• Create a public repository of sent newsletters that you can share

· Subscriber capture and management features

Mailrelay lets you easily import contacts and organize them into groups or dynamic segments.

In addition to this, you get:

• Custom fields, which are highly useful for better segmentation and message personalization.
• Subscription forms
• Hidden fields in subscription forms (to assign a default value)
• And landing pages, two fundamental elements for converting visitors into leads and building your own database

Forms include options such as:

• A visual editor that allows you to easily create your forms
• Selection of visible or hidden registration groups
• Configuration of form landing pages (confirmation and successful subscription)
• Selection of the form sender
• Registration notifications
• Captcha
• Privacy acceptance
• Website embedding
• And duplicate detection when importing lists

To manage your subscribers, you can use:

• Quick filters, based on status (active, bounced, unsubscribed, spam complaints, inactive, blacklisted)
• Advanced search, which allows you to filter contact values, their actions (opens, clicks, etc.), or even custom field values
• Create dynamic segments. This means you can set specific conditions; if a contact no longer meets them, they leave the segment, and if they meet them again, they are re-added automatically. Segmentation can be as simple or as complex as you want. With just a couple of conditions, or multiple groups using ‘and’ and ‘or’ rules.
• Create and apply tags. You can create tags to assign to contacts as they go through different processes, such as subscription forms and automations. These tags allow you to build funnels and know exactly where your contacts are in the journey.
• Blacklists. To avoid sending emails to those who shouldn’t receive them.
• Bulk editing. To add contacts from one group to another, delete them, move them, etc.

· Automation and customer journey features

Mailrelay covers the most sought-after features in any email software.

You can:

• Create workflows for welcome emails
• Drip sequences
• Birthday automations
• Conditional actions based on campaign opens
• Conditional actions based on clicks
• Change contact groups
• Abandoned carts in WooCommerce

Mailrelay workflows include:

• Conditional blocks
• Wait blocks
• Email sends
• SMS sends
• Group actions
• Different workflow branches based on conditions
• And, of course, automation statistics

In practice, this allows you to build simple yet highly effective customer journeys without turning automation into an endless technical project.

· Advanced personalization features

Mailrelay lets you do much more than just adding the contact’s name in the greeting.

Some of the options include:

• Creating custom fields and adding them to emails
• Showing or hiding blocks based on conditions

This is especially useful when you want the same newsletter to be relevant to different audiences without duplicating campaigns.

It helps scale personalization in a practical way.

· Analytics and optimization features

Most companies want to know what happens after hitting ‘send’.

Mailrelay offers:

• Real-time statistics covering opens, clicks, unsubscribes, and bounces
• Click maps or heatmaps to see which areas of your email get the most interaction
• It also lets you run A/B tests to choose the most effective subject lines or senders
• Automation statistics
• And even SMTP delivery statistics

With all this information, email marketing stops relying on guesswork and starts using real data.

· Deliverability and transactional email features

Mailrelay stands out for:

• Having its own IP ranges
• Using proprietary algorithms to improve deliverability and prevent blocks
• Incorporating an SMTP server
• Sending transactional emails via SMTP or API
• API documentation designed to be readable by AI (OpenAPI), such as Claude.

This opens the door to using Mailrelay not just for newsletters, but also for confirmations, alerts, password resets, notifications, or automated messages generated by an app, store, or CRM.

· Integration features

Mailrelay offers:

• REST API
• Developer documentation (OpenAI)
• Connection with Make
• WordPress plugin
• And resources to integrate forms and synchronize users

This is why it’s a great fit for both startups and established companies that already use other systems and need an email channel connected to their website or sales platform.

· Multichannel features

Although Mailrelay is primarily an email marketing tool, the platform also integrates:

• SMS campaigns
• And WhatsApp campaigns

This allows you to complement the email channel with more immediate messages or multichannel workflows.

The idea is simple: use the best channel for the moment, without leaving your workspace.

Why Mailrelay stands out in email marketing

One of Mailrelay’s key differentiators is that it combines a vast number of features with a very smooth learning curve.

Many tools promise automation, analytics, or integrations.

However, these features aren’t always easy to use.

At Mailrelay, we want everything to be user-friendly.

A clear dashboard.

An easy editor.

And useful automations for most businesses.

This approach can be decisive for SMEs, ecommerce stores, content creators, and marketing teams who want results without having to invest a massive amount of time and resources.

· The free account

Without a doubt, Mailrelay’s free account is key.

The free account allows you to send up to 80,000 emails per month and manage up to 20,000 contacts, completely ad-free and with no credit card required to sign up.

Additionally, the free plan includes full support.

Frequently asked questions about Mailrelay features

· Is Mailrelay only for sending newsletters?

No. Mailrelay is used to create email marketing campaigns, capture subscribers with forms and landing pages, automate campaigns, analyze results, and send transactional emails.

Furthermore, it integrates SMS and WhatsApp on the same platform.

· Does Mailrelay include email marketing automation?

Yes. The platform allows you to create automation workflows for welcome emails, drip campaigns, birthdays, abandoned carts, and actions based on opens, clicks, or group changes.

It also supports conditions, wait steps, webhooks, and SMS messaging within a workflow.

· Can you run A/B tests with Mailrelay?

Yes. Mailrelay includes A/B testing, which serves as a tool to optimize subject lines and senders before launching the final version to the rest of your list.

It is a key feature for improving open and click rates through data-driven decisions.

· Does Mailrelay allow sending transactional emails?

Yes. Mailrelay allows you to send transactional emails via SMTP or API.

This makes it highly useful for order confirmations, shipping notices, password recoveries, account alerts, and other automated notifications for an ecommerce store or app.

· Does Mailrelay integrate with WordPress or other tools?

Yes. Mailrelay offers a WordPress plugin, REST API, and connection with Make.

· What statistics does Mailrelay offer?

It offers real-time statistics on opens, clicks, unsubscribes, bounces, and spam complaints, along with click maps or heatmaps to better interpret the performance of each campaign.

Consequently, it becomes easier to optimize design, content, and segmentation for future campaigns.

· Does Mailrelay offer support on the free account?

Yes. Mailrelay provides support across all accounts.

· What is the most noticeable advantage of Mailrelay compared to other tools?

The combination of broad functionality, ease of use, human support, and a massive free plan.

In other words, you can manage campaigns, automation, lead capture, analytics, SMTP, and integrations without starting with a complex plan or difficult setup.

For many businesses, that balance is exactly what is needed.