Key takeaways
- Start with the API and its documentation: a developer should be able to send a test message the same day without talking to a salesperson.
- Ask for several channels behind one API and a fallback order that you control.
- Routing, failover and delivery reports decide whether you can trust the result, so ask about each one separately.
- Check the pricing model, support and time to go live, not only the feature list.
What are the most important features of a modern CPaaS platform?
A CPaaS (Communications Platform as a Service) gives your systems messaging and other communication functions through APIs, without you building telecom connections yourself. The table lists the ten areas that most often decide whether a platform holds up in production.
| Feature | What you should be able to confirm |
|---|---|
| API and documentation | One REST API with clear documentation, example requests and responses, error codes, test and live keys and stated rate limits |
| Channels and fallback | SMS, RCS, iMessage, email and chat apps behind the same API, and a fallback order per message |
| Routing and failover | Several routes per destination, automatic switching when a route fails, and an answer on how fast traffic moves |
| Delivery reports and webhooks | Status per message, error codes, signed webhooks, retries and a way to fetch status through the API |
| Analytics | Delivery, cost and channel results together across channels, with no extra fee |
| Numbers and senders | Registration and management of sender names and numbers per country, and protection of your sender name |
| Security and access control | A key per service, the ability to revoke it, separate test and live environments, signed webhooks and a data processing agreement |
| Pricing model | What is charged (sent or delivered), fees, currency, VAT and price changes |
| Support | Hours, channels, response times and access to technical help, not only customer service |
| Integration speed | A realistic time to go live, and whether you can use an API or your existing systems |
Which CPaaS providers in Denmark have fast API integration?
No neutral list can answer that for you, and “fast” has to be measured, not claimed. Look at two times: from receiving a key to the first test message, and from the first test message to go-live with real customers. A developer can measure the first in an afternoon if the documentation is public and a test key exists.
Test it without committing:
- Read the documentation before you talk to a salesperson; if it sits behind a login you cannot judge it in advance
- Send a test message with a test key, using the documentation alone
- Try the failures: a wrong key, an invalid number, too low a balance. Are the error codes clear?
- Ask whether you can use your existing systems instead of building everything yourself
What should you check for channels, routing and delivery reports?
This is where platforms differ most, and where a feature list is easiest to misread. Ask about each part on its own.
- Channels: are SMS, RCS, iMessage, email and chat apps such as WhatsApp behind the same API, or do you integrate each one separately?
- Fallback between channels: can you set an order per message, for example RCS first and SMS as the safety net, and can you see which channel finally delivered?
- Routing and failover: how many routes per destination, how is a failing route detected, and how fast does traffic move? Route failover and channel fallback are two different things.
- Delivery reports: do you get a final status, a timestamp and an error code per message, and does it come from the operator’s own report where the operator returns one?
- Webhooks: are they signed, and what happens if your endpoint is down? Check the number of retries.
What about numbers, security, price and support?
The last points are the ones that matter most once the system is running.
- Numbers and senders: does the provider help with registering sender names and numbers in the countries you send to, and does it offer protection against misuse of your sender name?
- Security and access: your own API key per service, the ability to revoke it without affecting others, separate test and live, and a data processing agreement
- Pricing model: do you pay for sent or delivered messages, and are there fees for setup, operation or a subscription? See our article on what messages really cost.
- Support: is there technical help when something breaks, also outside office hours, and who answers?
- Scale: how many requests per minute does the API allow per key, and how do you send large batches?
How ZafeConnect fits
ZafeConnect has a CPaaS platform with customized message flows and analytics across channels, both at no additional cost. You integrate through the API or your existing systems and can be live in as little as 2 weeks; you pay for delivered messages, with no setup, system or operating fees and no subscription, and customer support is available 24/7.
The API is publicly documented: an X-API-Key header, live and test keys, channels in priority order with fallback, bulk sending and signed webhooks that are retried up to 5 times. ZafeConnect reports a message delivery rate of over 98%, which is a reported rate and not a delivery guarantee.