Send transactional emails your customers actually wait for
Welcome messages, abandoned cart reminders, post-purchase follow-ups: these are the emails your customers actively expect, and the ones they open the most. Positive User automates the marketing-driven transactional emails that build trust and drive repeat business. For SMTP or API-based sending, our team helps you find the right setup.
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Why transactional emails are different
Same channel, different rules. Higher expectations from recipients, higher stakes for the business. Here's what changes everything once you treat transactional emails as their own category.

The most opened emails your business sends
A welcome email after signup. An order confirmation. A shipping update. These messages are eagerly anticipated by recipients. Open rates regularly hit 60 to 80 %, well above the 20 % average of marketing campaigns. When a transactional email doesn't arrive, customer experience takes a direct hit.
Deliverability isn't optional
A missed marketing email is forgettable. A missed transactional email is a customer who never receives their invoice, a cart they never come back to, an account they can't activate. Deliverability needs to hit 98 % or above, within seconds of the trigger event. This is why transactional and marketing sending should rarely share the same domain.
Triggered by actions, not by campaigns
Marketing emails follow your calendar. Transactional emails follow the customer's. Every signup, every purchase, every milestone fires its own message in real time. The system absorbs peaks without slowing down your campaigns, and without putting sender reputation at risk.
An overlooked revenue lever
Most companies still treat transactional emails as a technical obligation. The best teams treat them as a customer relationship asset. A well-crafted confirmation email builds confidence and opens the door to the next purchase, without ever looking like a promotion.
Marketing-driven transactional emails, fully automated
Welcome emails that set the tone
The first email a new customer receives sets the tone for the entire relationship. Welcome flows on Positive User deliver onboarding steps, brand context, or a first-purchase incentive, all triggered the moment someone signs up. Treat your welcome email like a landing page, not a formality.
Cart recovery emails that bring revenue back
When a customer leaves items behind, Positive User triggers the abandoned cart email automatically. Include the product details, a direct link to checkout, and a personalized incentive if it fits your strategy. One of the highest-ROI transactional emails you can put in production.
Post-purchase and lifecycle emails that deepen relationships
Order confirmations, review requests, milestone celebrations, renewal reminders. Build workflows that send the right message at every stage of the customer journey. Combine email with SMS, push notifications, or WhatsApp when the moment deserves a different channel.
For SMTP or API-based transactional emails, talk to our team
System-level emails need a dedicated infrastructure
Password resets. Two-factor authentication codes. Shipping notifications fired straight from your application back-end. These transactional emails flow via SMTP relay or API, directly from your stack. They need their own sending infrastructure, separate from your marketing automation, with strict latency and audit-grade deliverability.
When volume or compliance raise the bar
Beyond a certain volume, typically tens of thousands of transactional emails per month, or when you need a dedicated IP, real-time monitoring, or compliance-grade guarantees, marketing automation reaches its limits. A dedicated transactional email service like Sarbacane Sendkit, also part of the Positive Group, is built for exactly this.
We help you find the right solution
Positive User doesn't include an SMTP relay or transactional email API in its core product. But within the Positive Group, the right tool exists for your case. Our team helps you assess your volume, your stack, and your compliance needs, then orients you to the solution from our ecosystem that fits.
Target your contacts to improve the performance of your campaigns
The metrics that actually count
Inbox placement rate. Time elapsed between trigger event and delivery. Open rate broken down by email type. Click-through on secondary CTAs. These numbers tell you whether your service is running smoothly, and whether your emails create value beyond their technical role.
When transactional becomes a marketing channel
Once deliverability is solid, the next lever is editorial. A/B test the subject lines of your confirmation emails. Measure the impact of a product recommendation added below a delivery update. The biggest leverage is often hiding in the emails you already send every day.
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Frequently Asked Questions
What's the difference between a transactional email and a marketing email?
A transactional email is triggered by a specific action: a signup, a purchase, a password request. It's individual, expected, and almost always opened. A marketing email is sent by the brand to a list, in bulk, on a schedule. Different purpose, different rules (especially under GDPR), different infrastructure best practices. The two should rarely share the same sending domain.
Does Positive User include SMTP or API-based transactional email sending?
Not as part of the core product. Positive User automates the marketing-driven transactional emails (welcome flows, cart recovery, post-purchase follow-ups, lifecycle messages) through its marketing automation. For system-level transactional sending (password resets, shipping notifications, real-time confirmations fired from your application via SMTP or API), our team orients you to a dedicated service within the Positive Group, such as Sarbacane Sendkit. Get in touch to discuss your specific setup.
Which transactional emails can I automate with Positive User?
Welcome sequences, abandoned cart reminders, post-purchase follow-ups, review requests, replenishment reminders, milestone celebrations, subscription renewal alerts, reactivation campaigns. Anything triggered by a customer action, lifecycle event, or behavioral signal in your CRM or e-commerce data.
Do I need a developer to build transactional email workflows?
No. The automation builder on Positive User is no-code. Drag and drop triggers, conditions, and email actions. Your marketing team can build and launch workflows independently. For developer-level integrations (sending via API directly from your own application), see Q2.
How do I personalize transactional emails on Positive User?
Pull dynamic content from your contact attributes, product catalog, or behavioral data. Names, order details, loyalty balances, recent activity, product recommendations. Every email adapts to the recipient automatically, without manual list segmentation.
Can I combine transactional emails with SMS or WhatsApp?
Yes. Build multichannel workflows where an order confirmation lands by email, a shipping update by SMS, a delivery confirmation by WhatsApp. Each channel plays its role, and the right message reaches the customer at the right moment.
How do I track the performance of transactional emails sent through automation?
Every workflow surfaces delivery rates, open rates, click-through rates, conversions, and revenue attribution in real time. Track each transactional flow on its own, or roll up the data at the program level for an executive view.











