How to migrate from Apifon to Twilio

Apifon is a Greek business-messaging platform that sends SMS, Viber, WhatsApp, RCS, Messenger, and email through REST and SMPP APIs. Twilio is a US-based customer engagement platform with communications APIs spanning SMS, MMS, voice, email, and more. On the messaging.dev Score, Apifon rates 52/100 and Twilio 88/100; this guide covers what actually changes at the API level when you move between them, and what you gain and lose along the way.

What you gain and what you lose

Channels. Moving to Twilio you gain MMS and voice, which Apifon does not offer. You lose Viber and Facebook Messenger — Apifon supports both, Twilio supports neither. SMS, RCS, WhatsApp, and email exist on both platforms, and neither offers Telegram or Apple Messages for Business.

Compliance. Both hold GDPR and ISO 27001. Twilio additionally lists SOC 2 and HIPAA, so you move to a broader certification set.

Data residency. Apifon hosts on EU servers only, with no region choice. Twilio offers US and EU servers (plus Australia) and supports a data residency choice.

Pricing and credit. Apifon uses prepaid pay-as-you-go: you top up a euro balance and per-message rates are quoted per account, not published. Twilio is pay-as-you-go per message/minute with volume and committed-use discounts, and publishes a starting rate of $0.0079 per US SMS segment (plus carrier fees). Apifon’s free credit is a trial bonus on verification; Twilio gives $15 in trial credit.

Tooling. Apifon ships SDKs for Java, PHP, C#, Python, and Node.js; Twilio covers all of those plus Ruby and Go. Both rate high on documentation quality. Twilio provides a sandbox test environment; Apifon does not. On API transports, Apifon exposes REST and SMPP while Twilio exposes REST and SMTP. Apifon covers 200 countries versus Twilio’s 180.

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"}]}'

Twilio’s quickstart:

curl -X POST 'https://api.twilio.com/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Messages.json' \
  --data-urlencode 'To=+15551234567' \
  --data-urlencode 'From=+15005550006' \
  --data-urlencode 'Body=Hello from Twilio' \
  -u ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:your_auth_token

Three things change. The endpoint moves from a single fixed URL (https://ars.apifon.com/services/api/v1/sms/send) to an account-scoped path (https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json) that embeds your Account SID. The authentication changes from Apifon’s ApifonWS HMAC signature or OAuth2 Bearer token (with an X-ApifonWS-Date header) to Twilio’s HTTP Basic auth, using your Account SID as username and Auth Token as password. The payload switches from a JSON body to form-urlencoded fields, and the field mapping flattens: Apifon’s nested message.text becomes Body, message.sender_id becomes From, and subscribers[].number becomes To.

Migration checklist

1. Create a Twilio account and generate credentials (Account SID and Auth Token); provision a sending number.
2. Map the request fields: message.text → Body, message.sender_id → From, subscribers[].number → To.
3. Swap the endpoint and switch auth from ApifonWS HMAC / OAuth2 Bearer to HTTP Basic, and change the content type from JSON to form-urlencoded.
4. Re-point your sending code, or adopt an official SDK (Node.js is Twilio’s default starting point).
5. Re-test in Twilio’s sandbox before sending live traffic — Apifon had none, so this is a new step. See how to start with Twilio for the full quickstart.
6. Update your webhooks and delivery-status callbacks to Twilio’s format and URLs.
7. Run both providers in parallel and compare delivery results.
8. Cut over once volumes and delivery reports match.

Watch out for

• Lost channels. Twilio does not support Viber or Facebook Messenger; if you rely on either, plan a replacement before cutover.
• No SMPP. Apifon offered an SMPP bind; Twilio’s transports are REST and SMTP, so SMPP integrations must be rewritten.
• Fewer countries. Twilio’s data lists 180 countries covered versus Apifon’s 200 — verify your destinations.
• Payload rewrite. The move from nested JSON to flat form-urlencoded fields touches every send call.

For a full side-by-side, see the Apifon vs Twilio comparison.