Saint Lucia’s software is increasingly built locally: booking engines for villas and tour operators, e-commerce stores for rum, sauces and crafts, customer portals for insurers and credit unions, and application systems for professional services. Each of these needs to send email automatically: confirmations, receipts, password resets, status updates. Mailpro’s email API lets developers do that without running their own mail server.
What the API is for
An email API is a web interface your application calls to send a message. Instead of connecting to a mail server, your code sends an HTTPS request with the recipient, subject and content, or a template reference and personalisation data. Mailpro handles delivery, bounces and tracking. Typical Saint Lucian uses include:
- Booking confirmations from a hotel or tour-booking site, including arrival instructions.
- Order and shipping updates from an online store selling to the island and to the diaspora abroad.
- Account emails from a customer portal: sign-up verification, password resets, statements available.
- Case updates from professional-services firms handling applications for international clients.
- Alerts from internal systems, such as low-stock warnings or monitoring notices.
Why developers choose an API over SMTP
An API gives structured responses, easier template handling and event data through webhooks. SMTP is simpler to plug into existing software that already has email settings. Our comparison of email API versus SMTP covers the trade-offs in detail.
Webhooks and delivery status
Webhooks let Mailpro notify your application when something happens to a message: delivered, bounced, opened, clicked. Your booking system can then flag a guest whose confirmation bounced so staff can call them before arrival. See the webhook documentation and the FAQ on Mailpro’s three webhook types.
Getting started
- Create a Mailpro account and generate API credentials.
- Authenticate your sending domain with SPF and DKIM so messages from your Saint Lucian domain are trusted by Gmail, Outlook and others.
- Read the developer documentation and send a test message.
- Set up webhooks for bounces and deliveries.
- Monitor results; see email API statistics for what to watch.
Templates and personalisation
Rather than building full HTML in your code, you can keep a template in Mailpro and send only the variable data: guest name, booking reference, arrival date, pick-up point. Designers can update the look of a confirmation without a developer redeploying the application, which matters when the same small team handles the website, the booking engine and the marketing.
Keep transactional and marketing mail apart
A booking confirmation must arrive even if last week’s promotion drew complaints. Send transactional mail through the API on its own stream, and campaigns from the marketing side of your account. Do not add promotional content to receipts for recipients who did not opt in; guests from Canada and the EU in particular are protected against marketing presented as a service message.
Data protection and hosting
Transactional emails carry personal data: names, booking details, sometimes financial information. Under Saint Lucia’s Data Protection Act 2011, which restricts transfers to countries without adequate protection, where that data goes matters. Mailpro processes and stores it in Switzerland, on private infrastructure outside US jurisdiction; Switzerland has an EU adequacy decision. Connections use TLS 1.3, and data is never sold or rented.
Reliability for a small island market
Local development teams are often small, and nobody wants to be on call for a mail server. Using an API offloads delivery, retries and bounce handling. Mailpro has been operating since 2001, and in Mailpro’s own customer survey users rated email deliverability 9.6/10.
Pricing
You pay for what you send, not for contacts stored. That suits transactional volumes that rise in the winter season and fall in late summer. Start with 500 free credits. For common questions, browse the SMTP and API FAQ.