- All 6 channels · AI credits included
- 300 emails / day · 9,000 / month
- SMS · WhatsApp sampler (10 / mo)
- Push · Slack · Telegram (100 / mo)
- 20 AI credits / month
- 1 domain · 1 API key · 1 member
- 7-day log retention
- Test mode keys
- No credit card required
- 1,000 emails / day · 30k / month
- SMS pay-as-you-go · multi-channel basics
- 3 domains · 5 keys · 10 members
- 30-day log retention
- Webhooks included
- Email + agent support
- 5,000 emails / day · 150k / month
- All 6 channels at production volume
- AI features included · 20k credits / mo
- Broadcasts · scheduled messages
- Audit log · 90-day retention
- 20 domains · 25 keys · 25 members
- Webhook delivery logs & replay
- Priority anomaly detection
- Unlimited / custom sending limits
- Multiple dedicated sending IPs
- SAML SSO · 365-day retention
- Platform accounts · sub-accounts
- White-label config · wholesale model
- Priority support & SLA
What lights up at each tier.
Pay once. Send on all six channels.
Most messaging APIs charge per message — a fraction of a cent per email, a few cents per SMS, a conversation rate for WhatsApp. That sounds cheap until you do the maths on a growing product: 50,000 emails a month at $0.001 each is $50 before you've sent a single SMS. Add WhatsApp and the invoice gets unpredictable fast.
Senddio charges a flat monthly fee for the plan tier that fits your volume. Email, SMS, WhatsApp, push, Slack and Telegram are all included at the same price. When you grow from 10,000 to 30,000 emails a month, your bill does not change. When you add a second channel, nothing is added to the invoice. The only time the number moves is when you choose to upgrade tiers — and that is always your decision, not ours.
Predictability is a feature.
Per-message pricing creates a perverse incentive: it makes every send feel like a cost decision instead of a product decision. Developers start second-guessing whether to add a confirmation email, whether the weekly digest is worth it, whether to try WhatsApp in a new market. That friction compounds into real product drag.
With flat pricing, the marginal cost of a new send is zero. You add the feature, you watch the engagement, you iterate. The AI credits work the same way: monthly allocation included in the plan, with top-up packs if you need more. No surprise line items on the invoice because an agent ran an anomaly scan overnight.
Plans built for forecasts you can sign your name on.
Composite quotes from finance and engineering leads after switching to flat pricing.
Your first 30 days at flat pricing.
Pricing & billing — FAQ
Correct. Sign up with an email, verify it, ship code. We ask for a card only when you choose to upgrade to a paid plan.
Pro is meant for production teams running real multi-channel volume with AI features and audit logging — supporting Twilio/Meta/FCM pass-through, dedicated AI credit allocation and 90-day retention costs us real money per account. A $29 plan that promises all of that would be either dishonest or unsustainable.
We queue, never silently drop. The dashboard shows a clear notice with two options: wait until the daily window resets, or upgrade. No surprise overage charges.
Yes — Claude MCP + OpenAI tool connectors are included on every plan. Free gives you 20 AI credits/month and full agent-scoped key features. It's designed for indie developers and AI tinkerers to ship real things.
Yes — Enterprise. Reach out via the contact link with your monthly volume, channel mix, and any compliance needs (SOC2, BAA, SSO). We'll come back with a custom quote that includes dedicated IPs.
Any time. We pro-rate the change and you retain your data; only the plan-gated features stop working at the new tier.
On Free, the sampler quota is a hard cap. On Starter, pay-as-you-go at our cost (no markup) above a baseline. On Pro, real production volume is included up to a generous fair-use line; we'll reach out before you hit it.