How to migrate from Apifon to Telnyx

Apifon is a Greek business-messaging platform for SMS, Viber, WhatsApp, RCS, Messenger and email, exposed through a web platform plus REST and SMPP APIs. Telnyx is a licensed telecom carrier that runs a CPaaS platform with APIs for SMS, MMS, RCS, WhatsApp, voice, and email over its own private global IP network. On the messaging.dev Score, Apifon rates 52/100 and Telnyx 78/100; this guide covers what actually changes when you re-point your sending code from one to the other.

What changes when you move

Channels. Both providers cover SMS, RCS, WhatsApp, and email, so those carry over. You gain MMS and voice, which Apifon does not offer. You lose Viber and Facebook Messenger, which Telnyx does not offer — if either is in your current traffic, you will need a separate provider for it. Neither supports Telegram or Apple Messages for Business.

Compliance. Both hold GDPR and ISO 27001. Telnyx adds SOC 2 and HIPAA, so you gain certifications rather than lose any.

Data residency. Apifon hosts in the EU only, with no region choice. Telnyx offers both US and EU servers plus a data-residency choice, and additionally lists Asia-Pacific and South America regions — more control, not less.

Pricing and free credit. Apifon uses prepaid pay-as-you-go: you top up a euro balance and messages are charged against it, with per-message rates quoted per account rather than published. Telnyx is also pay-as-you-go but bills per message part with published rates (from $0.004 per outbound US SMS part, plus carrier fees) and volume discounts. Note that Apifon gives a free trial bonus on verification; Telnyx lists no free developer credit.

SDKs, sandbox, docs. Telnyx ships SDKs for Node.js, Python, Ruby, Go, Java, .NET, and PHP, versus Apifon’s Java, PHP, C#, Python, and Node.js. Both expose REST and SMPP, both have documentation rated high quality, and neither provides a dedicated sandbox.

How the request format differs

Apifon’s quickstart:

curl -X POST "https://ars.apifon.com/services/api/v1/sms/send" \
  -H "Content-Type: application/json" \
  -H "X-ApifonWS-Date: $(date -u '+%a, %d %b %Y %H:%M:%S GMT')" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -d '{"message":{"text":"Hello There!","sender_id":"Apifon"},"subscribers":[{"number":"306999999999"}]}'

Telnyx’s quickstart:

curl -X POST https://api.telnyx.com/v2/messages \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "from": "+15551234567",
    "to": "+15559876543",
    "text": "Hello, world!"
  }'

Three things change. Endpoint: POST to https://api.telnyx.com/v2/messages instead of https://ars.apifon.com/services/api/v1/sms/send. Auth: Apifon accepts either an HMAC-signed ApifonWS header (paired with an X-ApifonWS-Date header) or an OAuth2 Bearer token; Telnyx uses a single static Bearer API key (Authorization: Bearer YOUR_API_KEY), so you can drop the date header and any request-signing logic. Payload: Apifon nests the body under a message object (message.text) and lists recipients in a subscribers array of { "number": ... } objects, with the sender in message.sender_id. Telnyx is flat: a top-level text, a single to string, and from. Apifon’s example sender is an alphanumeric ID (“Apifon”); Telnyx’s from and to are E.164 numbers with a leading +.

Migration checklist

1. Create a Telnyx account, self-onboard, and generate an API key in the dashboard.
2. Map your request fields: message.text → text, subscribers[].number → to, message.sender_id → from.
3. Re-point your sending code to https://api.telnyx.com/v2/messages and swap the auth to a Bearer API key.
4. Confirm recipient numbers are in E.164 format (leading +).
5. Because Telnyx has no sandbox, test against a live key using your own test numbers and low volume.
6. Update your delivery/status webhooks to consume Telnyx’s callback format instead of Apifon’s.
7. Run both providers in parallel and compare delivery before cutting over.
8. Cut over once delivery and reporting match.

See how to start with Telnyx for the full quickstart, and the Apifon vs Telnyx comparison for the complete side-by-side data.

Watch out for

• Lost channels: Viber and Facebook Messenger are not available on Telnyx.
• No free developer credit: Apifon’s trial bonus on verification has no Telnyx equivalent.
• No sandbox: you will test against live keys, same as on Apifon.
• Fewer countries covered: Telnyx lists 130 versus Apifon’s 200 — verify your destinations are supported before you cut over.