| Expiry of the prepaid balance |
✓ Never expires |
✗ Expires after 15–18 months, or every month |
| Telegram as a business channel |
✓ Included, €0.010 per message |
✗ None of the Spanish platforms compared offered it (Jul 2026) |
| Monthly fee for the WhatsApp line |
✓ None: you connect your line and pay only for the messages |
✗ Other providers: €99/month per line + €49 non-refundable set-up (their dashboard, 2 Aug 2026) |
Campaigns API (POST /campaigns) |
✓ Full campaigns through the API |
✗ Only grouping or batch labels |
| Signed status webhooks with retries |
✓ Secret-based signature + backoff |
✗ GET callbacks with no signature or authentication |
Idempotent sending (Idempotency-Key) |
✓ No duplicate messages |
✗ Not documented (not in Twilio either) |
| Free, documented test sandbox |
✓ Sandbox mode per account |
✗ Announced but undocumented, or non-existent |
| Multilingual dashboard |
✓ 6 languages: es, en, fr, ca, eu, gl |
✗ No Spanish co-official languages |
| Account sign-up |
✓ Manual anti-spam approval of every sign-up |
✗ Automatic sign-up: routes burnt by spam |