Knowledge base

The difference between transactional emails and marketing emails

Transactional emails vs. marketing emails - these two types of emails are similar in that they both aim to strengthen your brand image and build customer relationships, but they serve fundamentally different purposes and must be treated as such.

In this article, we’ll explain how transactional and marketing emails differ from one another, and why having dedicated email tools for each is the best way to manage your business emails.

What is a transactional email?

Transactional emails are automated emails sent to one recipient triggered by an event or action carried out by the recipient on a business’ website or app. Transactional emails are used for commercial activities such as account activity or purchases and are sent by SMTP relay or Email API

These types of email messages often contain information unique to the recipient’s case, for example, details of an order they have placed. This means that each email is sent to only one recipient, compared to marketing emails that are sent out to whole email lists. 

Some examples of the types of transactional emails are:

Learn how to deliver the best transactional email experience with these 12 best practices.

What is a marketing email?

Marketing emails contain promotional content about the company, products or offers, and are sent out simultaneously to all subscribers. This includes existing customers and those that have simply opted-in to receive promotional messaging. Marketing emails are sent out strategically, at specific times set to optimize the success of the campaign, rather than being triggered by an action of the recipient. 

Some examples of marketing emails are:

  • Newsletter emails

  • Lead nurturing emails

  • Survey/feedback emails

How transactional emails and marketing emails differ

Transactional email

Marketing email 

Triggered by recipient

Via uploaded list or opt-in forms

Sent on a one-to-one basis

Sent to many

Not covered by CAN-SPAM, GDPR etc.

Covered by CAN-SPAM, GDPR etc.

Lawful base: legitimate interest, opt-in not required

Lawful base: Consent, opt-in required

Unsubscribe link not required

Unsubscribe link required

Content is unique, informative and relevant to the recipient’s action

Content is general, promotional and part of a campaign

Delivery speed very important

Delivery speed not as important

Engagement and open rates higher

Engagement and open rates lower

Whitelisting IP not required

Whitelisting IP required

Characteristics of transactional emails

1. Triggered by the recipient

Transactional emails are always triggered by the recipient, whether it’s because they complete an order on your app or website, or they request a password reset. 

2. Sent on a one-to-one basis

Emails are sent to individuals and usually have a much higher open-rate, as they contain important information unique to the recipient.

3. Opt-in isn’t required

Since these emails are triggered by the recipient, and they would expect to receive them, transactional messages fall under Legitimate Interest in privacy law (like the GDPR). This means no opt-in is required. 

4. No need for an unsubscribe link

Recipients will only receive transactional emails when they trigger them; they won’t receive any emails without consent. So, there’s no need to include an unsubscribe link. 

5. Outside the scope of CAN-SPAM and GDPR

Such privacy regulations apply to commercial emails. This means that transactional emails are not required to comply. However, they do include strict limitations to the amount of commercial messaging you can include in your transactional emails, such as product recommendations or discount codes. So, it's important to keep this content to a minimum and avoid making it the focus of the email. 

6. Specific types of content

Transactional email content confirms an action. They are created from templates that are auto-filled with elements of personalization (such as the recipient’s name) and unique details relating to the action that triggered the email (such as order confirmation details). They usually lack any kind of promotional content, and the templates are kept consistently the same no matter how many times the email is triggered, only updating the variable information. 

7. Success metrics

When it comes to measuring the “success” of transactional emails, look at speed of delivery and open rates. 

Transactional emails usually contain important information that needs to be delivered in a timely manner (think password reset requests) so quick delivery is crucial! The same goes for confirming an online purchase—we want timely confirmation to reinforce our trust in the brand and rest easy knowing our order is being taken care of. 

Compared to marketing emails, click, open and engagement rates are usually much higher, with an average of 80-85% open rate. This is because the content is uniquely relevant to the recipient; it’s something they expect and welcome. 

8. No need for IPs to be added to an allowlist

Since transactional emails don’t contain any commercial content, it’s very unlikely that they’ll end up being flagged as spam. For this reason, there is no need for sending IPs to be added to an allowlist.

Examples of transactional emails

In MailerSend, the different types of transactional emails fall under various categories: onboarding, security, e-commerce and payments, notifications, WooCommerce, and more. Let’s take a look at some examples of these.

Onboarding emails

This type of transactional email is sent to the recipient to confirm a registration or action that marks the beginning of your relationship. They help the recipient to get started with using the service or app.

Welcome email example

Both transactional and marketing emails can contain automations that trigger a welcome email, but there are a few differences between the two types. Transactional welcome emails, or registration emails, are usually sent when the recipient registers for an account on the app or website. They may contain details about the account, links to help guides or support, or a prompt to explore the service, like in this welcome email template from MailerSend.

screenshot of transactional welcome email template

Security emails

Transactional emails that fall under this category are related to the security of the recipient’s account.

Password reset email example

When a recipient requests a password reset, they will receive a password reset email to the email address which is registered to the account. From here, they can click the link in the email and reset their password. The information in these emails is unique and highly sensitive, so an automated request through a transactional email service is needed.

screenshot of password reset transactional email example

Login verification email example

As an extra layer of security, you may allow recipients to enable 2-factor authentication (2FA). One method of 2FA is to receive a login verification email, like the example below.

login verification transactional email

Email verification email example

In order to verify the authenticity of the account creation, a verification email can be triggered to enable the recipient to verify their email address and account.

asana email verification transactional email example

E-commerce and payment emails

This type of transaction email covers everything to do with purchases, orders, shipping and registered interest. Let’s take a look at a few of the different types. 

Order confirmation email example

An order confirmation email confirms that the recipient’s order has been received and is being processed. This type of email may also include details of the order and payment information.

order confirmation transactional email example

Receipt email example

Email receipts confirm that the recipient’s payment has been received and that their order is being processed.

screenshot of transactional email receipt template

Invoice email example

Invoice emails are similar to receipt emails, but rather than confirm that the payment has been received, they confirm the order details, payment method and billing address.

apple music invoice transactional email example

Shipping notification email example

Shipping notifications are transactional emails used to notify the recipient that their order has shipped, and sometimes provide updates on shipping progress. They also often include a unique tracking ID if applicable.

marshall shipping confirmation transactional email example

Delivery confirmation email example

These emails are used to confirm that delivery has taken place and to verify that the shipment has been safely delivered to its intended destination.

delivery confirmation transactional email example

Notification emails

Notification emails are transactional emails that provide information about an update or change to the recipient’s account, activity or an event relevant to their interests. Here are a few examples of notification emails.

Comment notification email example

If you’re a user of social media or Google Docs, you’ve probably received a few comment notification emails before. These emails are used by websites and apps that allow commenting, to inform the recipient of comment activity in relation to their account. This way, they can be redirected back to the website or app to respond.

comment notification email example

Feedback request email example

Feedback request emails can be triggered when a certain period of time has passed after the recipient has registered, or when they perform an action such as completing a purchase or trying out a new service or feature.

feedback request transactional email template

Review reminder email example 

If a user has projects or tasks in progress, reminder to review emails might be triggered automatically by certain events or time triggers. These prompt the recipient to head to the website or app to give feedback or resolve issues and comments.

screenshot of reminder to review transactional email template

Account notification email example

When a change or update is made to an account, account notification emails inform the recipient without them needing to first log in to the website or app. Some examples of this are: 

  • An action run by the recipient is complete

  • A new subscriber has signed up to a mailing list

  • A monthly bill has been paid

dropbox account notification transactional email example

Characteristics of marketing emails

1. Recipients have subscribed to the email list

In contrast to transactional emails, recipients of marketing emails have signed up and opted-in to receive emails that contain commercial content. Subscribers are most commonly collected from signup forms on websites and landing pages. Subscribers can also be collected by opting in separately to marketing emails when they register to use a service. 

2. Sent to many recipients simultaneously

Marketing emails are not sent to each individual when they are triggered by an action. Rather, they are sent in bulk to the entire email list, meaning each subscriber receives the same emails at (roughly) the same time. 

3. Covered by CAN-SPAM and GDPR

That’s right—if you’re sending marketing emails they must comply with data protection and privacy legislation such as CAN-SPAM and GDPR. 

4. Opt-in is required

Recipients of marketing emails MUST have opted in with active consent to receive such communication. This means that businesses need to allow subscribers to actively opt-in, and not opt-out. Double opt-in is preferred to help keep email lists clean. 

5. Emails need to contain an unsubscribe link

When it comes to marketing emails, unsubscribe links are a must to comply with various legal standards, provide a friendly user experience, and ensure that email lists are kept clean. 

6. Contain general commercial content

Unlike transactional emails, which contain unique content specific to the recipient, marketing emails contain the same content for each recipient as part of a marketing campaign. Learn more about marketing email content

7. Success metrics

Because marketing emails contain commercial messages, and not important, time-sensitive information such as a password reset link, delivery speed isn’t as important here.

Open rates and click-through rates are just as important for marketing emails, but the benchmarks for success are set much lower with an average open and click-through rate of around 20% and 2% respectively. This is because, as the recipient hasn’t triggered the email and doesn’t need anything from it, they are much less likely to open it. 

8. Must add IPs to an allowlist 

Sending IP addresses used to send marketing emails may be blocked on certain networks. In this case, the sending IPs would need to be added to the organization’s allowlist.

Examples of marketing emails

Welcome email example

Didn’t we see welcome emails in the transactional email examples? Yes, we did. But marketing welcome emails are different. Rather than information related to the recipient’s account or registration, they confirm a person’s subscription to the marketing email list and sometimes tell them what to expect from their newsletters or include a special offer.

marketing welcome email example

Newsletter example

Newsletters contain news, service/product updates, new resources, such as blog posts and case studies, and other promotional content.

marketing email newsletter example

Promotional/offer email example

If you want to promote an upcoming sale or share a discount code, dedicated promotional emails are the way to go. The goal of these emails is to guide a potential customer along the sales funnel.

marketing email promotional email example

Lead nurturing email example

These emails are sent out at just the right time to help you build relationships with your subscribers and guide them through the sales funnel. This will often be a mix of helpful, fun and entertaining content that helps subscribers to see the value in your product or service.

marketing lead nurturing email example

Re-engagement email example

With marketing emails, engagement is key. If you have a bunch of unengaged subscribers, it could negatively impact your sender reputation. But before completely removing them from your email list, a re-engagement campaign could help to win them back.

reengagement email marketing campaign example

Review request email example

A review request email campaign is sent out to all subscribers. It’s content would be more general compared to that of a transactional review request, which could be triggered by a purchase of a specific product.

marketing email review request example
Are you looking for an email marketing tool to take your campaigns to the next level? With MailerLite, anyone can design beautiful and effective marketing emails with the user-friendly drag & drop builder. Even better, with a Zapier integration, you can connect MailerLite with MailerSend to share information about recipients across apps to keep your email list healthy. Learn more about marketing emails.

Why you should use different tools for marketing and transactional emails

Transactional emails and marketing emails have very different goals, content and success metrics. For this reason alone it’s good practice to keep them separate (not to mention it will make managing them easier!).

There are, however, a number of other reasons that using different providers for transactional and marketing emails is essential if you want both to perform optimally.


If you send both transactional emails and marketing emails using the same Email Service Provider (ESP), it’s more difficult for email clients to distinguish between the two. Sending them from separate servers removes the chance everything will be labeled as promotional, allowing transactional emails to be delivered to the inbox in the timely manner that they are supposed to be. 

Moreover, open and click rates of marketing emails are much lower than that of transactional emails. Sharing an IP address for both could result in a lower domain reputation, impacting the deliverability of critical transactional emails. 

Speed of delivery

A key element in transactional email sending is speed—for transactional emails, it’s not just whether they land in the inbox that’s important (deliverability) but also how quickly they get there. Recipients trigger the email, and usually they expect to see that email in their inbox instantly. If not, it dampens the user experience. Sending large volumes of marketing emails from the same server could result in the delivery of transactional emails being delayed.

Email preferences

Since recipients need to opt-in to marketing emails but not transactional emails, managing both on one platform can become messy. Using different providers for each will give you peace of mind that you’re complying with legislation like the GDPR, and help you avoid any unintentional mistakes that could lead to hefty fines!


No, we’re not talking about names. But a deeper level of personalization that makes transactional emails unique to their recipients, such as password reset links, account information, or order details (like in the example below). Marketing ESPs often don’t include the functionality to provide the level of personalization that transactional emails require, so a dedicated solution is necessary.

screenshot of order confirmation email example

How to separate transactional emails from marketing emails

The goal for transactional emails is speedy delivery every time. To ensure this, email clients need to easily make the distinction between transactional emails and marketing emails. There are a few ways to achieve this:

1. Different “From” email addresses for transactional and marketing emails. For example, transactional emails are sent from and marketing emails from

2. A dedicated IP address for transactional emails so the message stream can build its own reputation.

3. Different subdomains. For example, transactional emails are sent from and marketing emails from

Luckily, by selecting a transactional email service like MailerSend, all of this will be taken care of for you! MailerSend makes setting up and managing your transactional emails simple, and our platform is optimized for maximum email deliverability. 

Learn how to set up transactional emails with MailerSend.