How to migrate from Vonage to Infobip

Vonage is a publicly traded communications-API platform (part of Ericsson) covering SMS, voice, video, and messaging. Infobip is a privately held omnichannel platform covering SMS, WhatsApp, voice, email, and more. On the messaging.dev Score, Vonage rates 89/100 and Infobip 96/100; this guide walks through the concrete API and coverage differences you hit when moving between them.

What you gain and what stays the same

Both platforms cover the core channels identically: SMS, MMS, RCS, WhatsApp, Viber, Facebook Messenger, and Voice. Moving to Infobip adds three channels Vonage’s dataset does not list: Telegram, Apple Messages for Business, and Email. You lose no channels in the move.

Compliance is a wash — both carry GDPR, ISO 27001, SOC 2, and HIPAA. Data residency is also equivalent: both run US and EU servers and let you choose a region. Infobip lists broader secondary regions (APAC, Latin America, Middle East, Africa) versus Vonage’s (APAC, Australia), though Vonage lists slightly wider raw country coverage (200 vs 190). Both offer self-onboarding, a sandbox, and “high”-rated docs, so your test-and-learn workflow carries over.

Two operational differences matter. First, pricing transparency: Vonage publishes pay-as-you-go rates (about $0.0072 per US SMS segment, plus carrier fees), while Infobip is primarily quote/contract-based with pricing not publicly listed — budget a sales conversation. Second, both advertise free trial credit, but Vonage specifies €2 while Infobip’s amount is unlisted. Infobip also exposes SMPP and SMTP alongside REST, and raises the uptime SLA from 99.95% to 99.99%.

SDK coverage overlaps on Node.js, Python, PHP, Java, and C#. If you rely on Vonage’s Ruby or Kotlin SDK, note Infobip does not list those; Infobip adds Go.

How the request format differs

Vonage (source):

curl -X POST 'https://rest.nexmo.com/sms/json' \
  -d 'api_key=YOUR_API_KEY' \
  -d 'api_secret=YOUR_API_SECRET' \
  -d 'from=Vonage' \
  -d 'to=15551234567' \
  -d 'text=Hello from Vonage'

Infobip (target):

curl -X POST 'https://xxxxxx.api.infobip.com/sms/2/text/advanced' \
  -H 'Authorization: App YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -d '{"messages":[{"from":"InfoSMS","destinations":[{"to":"15551234567"}],"text":"Hello from Infobip"}]}'

Three things change:

• Endpoint. Vonage posts to a shared host (https://rest.nexmo.com/sms/json, or https://api.nexmo.com/v1/messages for the Messages API). Infobip gives each account a personalized base URL — https://{base_url}.api.infobip.com/sms/2/text/advanced — so read your base_url from the dashboard.
• Authentication. Vonage’s SMS API takes api_key and api_secret as body parameters (its Messages API uses JWT). Infobip uses a header instead: Authorization: App YOUR_API_KEY. Move credentials out of the body and into that header.
• Payload. Vonage sends flat form-encoded fields. Infobip sends a JSON body (set Content-Type: application/json) with a messages array. Map from → messages[].from, to → messages[].destinations[].to (an array, so multi-recipient batching is native), and text → messages[].text.

Migration checklist

1. Create an Infobip account and generate an API key; note your account’s {base_url}.
2. Map each request field: from → from, to → destinations[].to, text → text, all wrapped in a messages array.
3. Re-point sending code: switch the endpoint, move auth to the Authorization: App header, and serialize the JSON body.
4. Re-test against Infobip’s sandbox before touching live traffic.
5. Update delivery/webhook callbacks to Infobip’s report format.
6. Run both providers in parallel and reconcile delivery receipts.
7. Cut over once the numbers match; keep Vonage credentials until you’re confident.

Watch out for

• Pricing is not public. Infobip’s SMS rate is quote-based, so you can’t self-serve a per-segment cost the way you can on Vonage.
• SDK gaps. No Ruby or Kotlin SDK is listed for Infobip; if your codebase uses either, plan to fall back to the REST API or Go.
• Country coverage. Infobip lists fewer raw countries (190 vs 200) despite broader secondary regions — verify your specific destinations.
• Per-account base URL. Hardcoding a generic host will fail; the {base_url} is account-specific.

New to the target’s API? See how to start with Infobip and the full Infobip vs Vonage comparison.