Top Transactional
Email Provider in United Kingdom

Send transactional emails in United Kingdom. Ensure high open rates with our transactional email API that is flawless and easy to integrate.
Send regular updates about curial information to your customers.

Send transactional emails with ease (and within budget)

Transactional emails are a unique set of one-to-one emails that are ideally targeted for sending data-driven and personalized messages and are not marketing-driven.

Optimize and send mission-critical
transactional emails

Account creation | Password reset | Purchase receipt | Account notification and more..

Implement, Integrate and use. Under 5 minutes.

A few minutes is all it takes to implement our transactional email API.

Enjoy multiple features like email reporting, tracking, scheduling, analysis, and testing for more convenience.

Never fail to send mission-critical transactional messages with a 99.99% uptime.

Automate Suppression Management

No need to manually prepare an opt-out collection email list. Automate with us and deliver emails in real-time using webhooks. Use the same automation for SMS and deliver transactional emails/SMS effortlessly.

Automation in the opt-out collection also works for other channels like SMS.

Get all your transactional emails in JSON

You can send easily readable transactional emails quickly in JSON. Also, using our webhooks, you can get each mail on your server in JSON format. Forward the email to us, and we’ll send it to you instantly or you can set up MX records.

Know all about your transaction emails via Webhooks

Our webhooks will inform you about transactional email deliveries, bounces, spam complaints, open rates all on your application. This way, you can always take the necessary action.

Deliver Transaction Emails as your Customers Like them

Use our robust and feature-rich email sending service and deliver personalized emails to your customers.  

Why do businesses in United Kingdom trust MSG91?

Tap on the best transactional email service to level up your customer service game


Pay Only for what You use



Custom Emails

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Common features for all plans


Transactional emails are sent to facilitate a consented transaction between the sender and the receiver, for example, the purchase of a product. Transactional emails are personalized and data-driven emails that are informational and non-marketed in nature. Transactional emails normally consist of information that a recipient wants or needs and consequently have very high opening (click) rates.

Common reasons to send transactional email to recipients include account opening emails, other device log-in flags, OTP verification, password resets, order receipts, account notifications, admission status, flight updates, and social media updates like upload and follower notifications. The information covered in these emails helps your customers to take further coherent actions wherever necessary.  

After creating your account with MSG91, To get started with emails, get your domain added and fully configured. Then Set up SMTP or integrate with API to start sending transactional emails. Get API for Transactional email in the doc

A transactional email is an automatically generated email exchanged between a sender and a recipient. 

Transactional emails are non-marketing informational messages that organizations and institutions have to send in order to validate a transaction or provide a product or service, as required by the client. Due to the mission-critical nature of transactional emails, businesses do not need to take consent from the customers beforehand to send these emails. For this reason, businesses don't need to take express consent from the recipient to send transactional emails. The updates and information are sent directly to the registered email address provided while logging in.

Once you have created the basic format of your transactional emails, these are auto-generated through programming and sent to the right customer. Use the following tips to create your email using MSG91 Email API for transactional email services.


  • Consider what the user may be doing right before your email notification appears in their inbox.
  • Focus on positioning your update in such a way that it helps the user by making their job easier, for instance sending easy to follow instructions and steps or links that auto-verify on once click.
  • Get to the information straight away. Make sure that the main update is in the subject line as well so that it is the first thing a reader sees in the email and knows exactly what your prompt is regarding.
  • Make use of templates and prompts for guidance.

A transactional email service is a service provided by organizations that enable businesses to send strategic transactional emails to their customers with lesser manual effort. MSG91 has robust developer-friendly APIs which help businesses create, customize and send transactional emails through proprietary transactional email software.
Within a few easy steps, you can keep your customers updated with their order details, booking status, login prompts, and other essential information that may or may not require an action from them.

A transactional email API (application programming interface) gives applications access to functionality available in an email platform. By using a robust transactional email API like that of MSG91, you can easily generate, optimize and send data-driven and personalized transactional emails. You can also enable access to A/B testing, scheduling, email analytics and tracking the status of the transactional emails sent to the recipient.