Polymorfa vs Green API

Three reasons teams move from Green API

1. 01

   Less per number, and nothing for the days a customer is gone

   Polymorfa charges $0.25 per online day, and a disconnected day costs nothing: the same 100 numbers cost $320, 3.75 times less. Monthly purchases of 10,000 credits or more earn a bonus of 10% to 150% on the whole purchase, so 500 numbers online all month cost $1,500.^2,8

   Green API: Green API's paid plans cost $12 per instance per month, or $0.40 per day on the Partner plan.¹ If half of 100 new instances are abandoned after day 2, the Business plan still costs $1,200, and a paid license is not recalculated.⁹

2. 02

   Webhooks you can verify, sends you can repeat

   Polymorfa signs each delivery body with HMAC-SHA256 and makes up to eight delivery attempts over 24 hours, set per webhook.³ Sends accept an Idempotency-Key, so a retried request within 24 hours does not send the message twice.¹⁰

   Green API: A static token proves only that the sender knows the token. It does not prove the body was not changed.¹¹

3. 03

   One API for both routes

   Polymorfa's Graph API accepts Meta's request shape for both linked-device and Cloud API numbers. The number you address decides which route carries the message. Cloud API onboarding is in beta.^4,12

   Green API: Green API runs its linked-device API and its WABA product separately.^13,14 The linked-device API sends with POST /waInstance{idInstance}/sendMessage/{apiTokenInstance}.¹⁵

   curl -X POST "$GREEN_API_URL/waInstance$ID_INSTANCE/sendMessage/$API_TOKEN_INSTANCE" \
     -H "Content-Type: application/json" \
     -d '{"chatId":"15551234567@c.us","message":"Your order shipped."}'

   # Same Meta-shaped body for a linked-device or a Cloud API number
   curl -X POST "https://api.polymorfa.com/graph/whatsapp/v26.0/$NUMBER_ID/messages" \
     -H "Authorization: Bearer $POLYMORFA_PROJECT_TOKEN" \
     -H "Content-Type: application/json" \
     -d '{
       "messaging_product": "whatsapp",
       "to": "15551234567",
       "type": "text",
       "text": { "body": "Your order shipped." }
     }'