How to Send Transactional Emails
Transactional emails — receipts, password resets, notifications — are mission-critical. OutSends separates transactional from marketing traffic, ensuring high-priority emails always get through.
What you'll need
Before you start, make sure you have the following ready.
- An OutSends account
- A transactional email template
- Your API key from OutSends
Step-by-step guide
Follow these steps to complete the setup.
Create transactional templates
Design your transactional email templates in OutSends. Keep them clean, responsive, and focused on the action.
Get your API key
Go to Settings > API. Generate an API key with "Transactional Send" permissions.
Send via REST API
Use POST /api/send/transactional with recipient, template ID, and personalization data.
Handle delivery events
Set up webhooks for transactional delivery events. Track opens, clicks, and bounces per message.
Monitor transactional performance
Use OutSends transactional dashboard to track delivery rates, response times, and error logs.
Tips for best results
Pro tips to get the most out of this setup.
- Use separate API keys for transactional vs. marketing sending
- Transactional emails should contain no marketing content — ISPs classify them differently
- Set up a dedicated sending domain for transactional traffic
Frequently asked questions
What is the difference between transactional and marketing emails?
Transactional emails are triggered by user actions (purchase, signup) and are expected. Marketing emails are promotional.
Do transactional emails need unsubscribe links?
No, CAN-SPAM exempts transactional emails from unsubscribe requirements. But include a preference center link.
What is a good transactional delivery rate?
97%+ is expected. If below 95%, investigate authentication or content issues.
Related guides
Explore more how-to guides for OutSends.
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