Complete Comparison 2026 — Omnichannel inbox for sales and support teams
Sendio is a Respond.io alternative built for SMBs: flat published pricing with transparent per-plan overage, no active-contact (MAC) tier jumps that raise costs without warning. Official WhatsApp Cloud API direct (Meta Tech Provider — Meta bills conversations, no markup), native Telegram and Discord in the inbox — the only one in this comparison that has it. Social Module (publishing) coming soon and self-serve with Stripe, MercadoPago and Bitcoin.
| Feature | Sendio | Respond.io |
|---|---|---|
| Supported channels | 5(WA, TG, DC, IG, Ms) | 6(WhatsApp, Instagram, Messenger, Telegram, Viber, Email) |
| Base pricing | From $0/mo | $79+/mo |
| Telegram | ||
| Discord | ||
| Messenger | ||
| TikTok |
| Feature | Sendio | Respond.io |
|---|---|---|
| Native idempotency | ||
| Signed webhooks | ||
| Real-time logs | ||
| Telegram | ||
| Discord | ||
| Instagram DMs | ||
| Messenger | ||
| Free plan | ||
| Unified API | ||
| Transparent rate limits |