Transactional Email powered by Flowmailer

Think order confirmations, invoices, and many more

Companies of every size depend on transactional email to connect with customers after they engage with their brand. Our software makes it easier to create meaningful messages that always hit the inbox.

We handle everything that happens under the hood of email communications. Reliable email API, self-hosted infrastructure and endless features ready for integration with your existing software.

Get in touch for a free trial


The best-of-breed Email & SMS API

Process all your in & outbound message streams through one comprehensive platform and take back control over your communications. Rely on the best delivery rates, real-time insight, and fully self-hosted infrastructure of a European Email API platform.
Spotler gets your messages to the inbox.

More than just an SMTP relay…

Don’t just make it to the inbox… own it! Our platform is built to get your beautifully crafted emails to the inbox. Not once, but every. single. time. Enjoy extremely high delivery rates with our tightly monitored IP pools, and make sure your emails make an impact with the advanced email editor.

Creating & improving emails made easy

Create anything you can imagine – with low to no coding effort. Connect your email stream, and simply drag & drop features on and off your emails. Our Flows allow you to organize messages and edit them to your wishes. Want to track your order confirmations but not password resets? Want to give your invoices a better design, but leave your account creation emails alone? The choice is always yours.

3 Reasons to use Spotler's Transactional Email

Unbeatable Deliverability

Get your messages to the inbox every time

Fully Integrated

Easily connect with SMTP or API and send your emails

Real Time Tracking

Keep up to date with the delivery of your emails

Talk to customers worldwide – in their language

Flowmailer’s Data Templates allow you to really connect with your customers in the language they speak, without having to create an endless amount of templates. With Language Packs, simply add a new translation and… *Poof!*
¡Estás hablando un nuevo idioma!

Connect through SMTP, API, SMPP, or an Inbox Source

Regardless of the message you’re sending: process it through Flowmailer (unless it’s SPAM, of course). Whether it’s outbound – like transactional emails -, inbound, or internal, Flowmailer manages all your message streams.

We take reliability very seriously

Everything we do is built with reliability in mind. What happens to ‘x’ if we do ‘y’? We don’t make concessions on our platform’s nor infrastructure’s reliability. We build, manage, and host the entirety of our platform: from the server racks in Amsterdam to the code that runs the whole show.

Privacy-first, 100% GDPR compliant

Built, managed, and hosted in The Netherlands, Flowmailer is GDPR compliant by default. Our way of working is trusted by companies all over the European Union to securely deliver their emails. Our legal documentation is free to download, so you know precisely what you’re dealing with.

More about our compliance

Your message delivered

Get to the inbox

Deliver within a second, with a 99% inbox rate

Seamless integration

Easily connect with SMTP or API and send your emails

Privacy guaranteed

European platform with all necessary certifications

Easy Authentication

Send SPF, DKIM, and DMARC aligned emails

Keep your data clean

Only send emails to existing email addresses

Get started

Follow in the footsteps of brands across Europe like Pathé, Currys, Teamtailor, DPD, CAB, Zusss, Siemens, and many more and chat with our team, get a free trial, and see how we can deliver your message. 

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