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Best Transactional Email Software 2025

Transactional Email Software allows users to send one-to-one personalized emails based on trigger events. Examples would be a welcome letter, a shipping confirmation, or an e-receipt.

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Learn More about Transactional Email Software

What is Transactional Email Software?

Transactional email software allows users to send one-to-one personalized emails based on trigger events that occur in the user's app or on their website. At the heart of these products is an API used to configure and detect the trigger events. Often the email builder and analytics offered in transactional email tools are fairly basic. Examples of events or actions that trigger transactional emails include:

  • Welcome letters

  • Order and shipping confirmations

  • E-receipts or invoices

  • Password reset

  • Free trial expiration alerts

  • Notifications and alerts


Some email marketing and marketing automation providers offer transactional email capabilities in addition to campaign-based functionality. There is also some overlap between transactional email tools and mobile marketing products that send transactional SMS messages, or transactional email messages triggered by activity within a mobile app (like a welcome email for new users sent upon creating an account in the app).

Transnational Email Features

All transactional email tools will have some form of email APIs, SMTP relay, and/or webhooks available. Other common features across transactional email software include:


  • Dedicated IPs

  • Suppression management

  • Inbound email routing

  • Email previewing

  • Email tracking

  • Email address validation

  • Email log retention

  • Email delivery optimization tools

  • Drag-and-drop email editor

  • Transactional email templates

Transactional Email Software Comparison

Before deciding to invest in either an email marketing platform or transactional email tool, consider the following key factors:


  • Type of emails: What type of emails will you be sending? Only transactional emails, or other types of campaign-based emails too? If it’s the latter, then you’ll likely need email marketing or marketing automation software as well. Some email marketing and marketing automation platforms include transactional email capabilities.

  • Number of emails: What volume of emails are you planning on sending? How large is your audience or contact database?

  • Integrations: Does the transactional email or email marketing product integrate with the other marketing software you use? Make sure to check that the product you end up purchasing has all the integrations you need.

Free Transactional Email Software

Many transactional email vendors offer a free version of their paid product. Some examples of vendors that offer free transactional email software or API include:


However, these free transactional email options often have limited functionality when compared with paid options. For example, there is usually a monthly or total limit to the number of emails that can be sent using the free product. This can range from 100 emails a month to a few thousand a month, or 10,000+ total free emails.

Pricing Information

Most paid transactional email platforms charge per month per number of emails. For basic plans, pricing can start as low as $7/mo. for up to 25K emails. Advanced plans with more features, such as audience segmentation and email A/B testing, start closer to $20/mo. for between 25K and 30K emails. Most paid plans charge over $100/mo. for email volumes upwards of 300K.


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Transactional Email FAQs

What do transactional email tools do?

Transactional email software allows businesses to send their users or subscribers automated emails triggered by events or actions the user takes. For example, an automated welcome email after a new user signs up is a transactional email. Password reset, order confirmation, and e-receipt emails are other examples of triggered transactional emails.

These types of tools typically include email APIs businesses can use to configure event triggers. Some tools also include more advanced features, such as contact management, audience segmentation, email A/B testing, and email templates.

What are the benefits of using transactional email software?

The primary benefit of using a transactional email platform is the amount of time and manual effort saved. Especially in the ecommerce industry, companies can receive thousands of new subscribers or orders per day. Both of these actions typically require a follow-up or confirmation email to be sent out.

Sending out potentially thousands of emails per day or week would take countless hours. Thus the biggest benefit this type of software provides is the automation of sending triggered emails.

What is the best transactional email software?

According to end-user feedback on TrustRadius, some of the most popular transactional email products (based on the number of reviews they have) include:

How much does transactional email software cost?

There are several free transactional email tools, though they typically have limited functionality. Many free options limit the number of emails users can send per month or in total as well. Examples of free transactional email tools include:

Paid tools can cost as little as $7 per month for about $25K emails. Plans with more advanced features tend to start at about $20 per month for between 25K - 30K emails. The cost for transactional email software can increase up to multiple hundreds of dollars per month for 300K or more emails.