European email API

Take control of your outgoing emails



Sign up and send your first email within 5 minutes



Get access to logs of your transactional emails for better insights



Our free support is ready to help you - by phone, chat or email

GET ACCESS Check the API docs

Heysender set up domain, monitor, and fix issues

What We Do

We make sure your emails get delivered

Based on our +20 years in the email industry, we always follow best practice, so we can offer you an email service with a high deliverability rate.

Check the APi docs

We offer a deeper understanding

Through the log, you get an overview of your outgoing emails. If you find an error, we offer an explanation, so you can fix it and resend the email.

Get access

GDPR compliancy and data security is a top priority

We store all data within the EU and only use european data suppliers. All data is encrypted using SSL and TLS for higher data protection.

Read ISAE 3000 report

Transactional emails are important, because your customers expect to receive them

When your customers interact with your business, they expect to receive the right information at the right time. And that’s why your transactional emails are critical to your business.

Why Heysender?

We offer a Danish transactional email service with a high deliverability rate, access to logs and quick support. With the right platform, you don’t have to waste time trying to find answers for unsatisfied customers. You can just troubleshoot why they never received their email and resend it.

Learn More about transactional emails

Built for developers who don’t want to waste time on emails.

Perfect for support teams that want customers to receive their transactional emails.

Explore Heysender

"When we chose Heysender, it was a top priority to be able to deliver our emails fast, because we use them for login information – our users can’t wait to get the right information. We have tested some of the bigger players like Sendgrid and Mailchimp, but they were often too unstable. Some emails were delivered within 10 seconds while others took minutes. When we use Heysender, there’s a big level of trust, because we can always contact the support directly. With some of the bigger players we could only contact them by filling out a form. After that, all we could do was sit back and wait."

– Thomas Johansen, CTO, Drope

"After evaluating several providers, we selected Heysender as the ESP for our software solutions due to their exceptional stability and reliable performance. Their platform ensures prompt message delivery and GDPR-compliance, giving us the confidence to communicate securely with our customers. Additionally, their support team is always accessible, demonstrating both readiness to assist and a high level of professionalism. This ensures a worry-free experience that greatly benefits our operations."

– Tormod Ween, Technical Manager, Visma IMS

"Heysender has delivered a trustworthy and fully GDPR-compliant solution, which has facilitated the integration of our platform among our customers."

– Thomas Kragh, CPO, Playable

Easy troubleshooting for transactional emails

Tired of not being able to tell your customers why they never received their transactional email?

What happens when a customer doesn’t receive their order confirmation, shipping information, password reset, or other critical information?

Then you’re left with a very unsatisfied customer, and no chance of helping them. Of course you can just send the email again, and hope it will be delivered this time.

But you’ll never find out why it didn’t happen in the first place, because most transactional email services offer very little or no insight for troubleshooting. The ESP just sends the email and that’s that. No logging of data, and no chances for you to see if the customer received the email.

So chances are, it will happen again for other customers. And that will probably make you feel very unprofessional, desperate and frustrated.

With Heysender, we promise you: That will not be the case.

GET ACCESS Check the API docs

Your data matters to us

That’s why GDPR is one of our top priorities. And that’s also why we are proud to present our ISAE 3000 report as part of our efforts to ensure the highest level of data security for you and other customers.

Read ISAE 3000 report here