Summary
Respond.io bills on Monthly Active Contacts (MAC), the number of contacts who message you in a billing month, with overage charged in blocks of 100 once you cross your plan's limit. Saysimple runs on a flat monthly licence per plan instead, so your bill doesn't move with how many contacts you talk to that month. If your WhatsApp volume grows or swings with seasonality, a flat licence is usually cheaper and more predictable than a MAC based model, even when Respond.io's entry price looks similar at first glance. Saysimple also adds WhatsApp call deflection and native Spanish, English and Dutch support, two things Respond.io doesn't match the same way.
TL;DR
- Respond.io bills on Monthly Active Contacts (MAC), with automatic overage charged in blocks of 100 once you cross your limit.
- Saysimple runs on a flat monthly licence per plan (Grow or Scale), with optional modules and no billing surprises from extra conversations.
- Saysimple offers WhatsApp call deflection, a feature Respond.io doesn't provide the same way.
- Respond.io's pricing changes fairly often, so treat the figures here as a snapshot, not fixed.
If you're evaluating WhatsApp Business platforms for your team, you've probably already come across Respond.io. It shows up constantly in customer service software comparisons, and its Monthly Active Contact (MAC) pricing model sounds reasonable right up until your business grows or hits a seasonal spike.
That's usually the point where teams start looking at alternatives. The real difference between Respond.io and Saysimple isn't how the inbox looks, it's how you get charged for using it. One bills by contact volume, the other by a flat licence with optional modules on top.
This comparison covers how each platform actually bills, what each one covers feature by feature (with a close look at call deflection, automation and integrations), which one gets you faster support, and a summary table so you don't have to read two separate pricing pages side by side.
What is Respond.io and what is Saysimple?
Respond.io is a multichannel conversation management platform, covering WhatsApp, Instagram, Messenger and web chat among other channels, built mainly for sales and support teams handling high conversation volume with automation and AI baked in.
Saysimple is a B2B Commerce Customer Engagement Platform, an omnichannel platform for WhatsApp Business and other channels, powered by AI and automation. It's built for B2B companies, wholesale and distribution businesses, automotive dealer groups, that need to centralize customer communication, automate replies with bots and flows, and, in some cases, deflect phone calls to WhatsApp to take pressure off a busy support line.
Pricing comparison: MAC model vs flat licence
How Respond.io bills (active contacts and overage)
Respond.io charges based on Monthly Active Contacts (MAC): any contact who sends or receives a message within the billing month, broadcasts excluded. On annual billing, its plans are Starter ($79/month), Growth ($159/month, 1,000 MAC included, with automation and AI features) and Advanced ($279/month, 1,000 MAC included, deeper integrations and AI voice). Enterprise is custom priced with unlimited MAC.
The part worth watching is overage. Once you cross your MAC allowance, Respond.io bills extra contacts in blocks of 100, roughly $12 per block on Growth and $15 on Advanced. If your conversation volume spikes during a campaign or a busy season, that overage shows up on next month's invoice even though your base plan didn't change. For a deeper look at how WhatsApp Business API pricing works in general, see our guide on WhatsApp Business API pricing.
How Saysimple bills (Grow and Scale plans)
Saysimple runs on a flat monthly licence, with no per active contact charge. The Grow plan is €119/month on annual billing (€139/month monthly), includes 3 users, 2,000 contacts and 1 WhatsApp channel, expandable up to 10. The Scale plan is €289/month on annual billing (€349/month monthly), includes 5 users, 5,000 contacts and 2 WhatsApp channels, with unlimited channels available. Both plans carry a one time activation fee (€450 on Grow, €1,250 on Scale), and extra contacts or seats are added as a straightforward upgrade rather than an automatic overage charge once you cross a threshold. You can see the full breakdown on the Saysimple pricing page.
The practical difference: with Saysimple you know what next month costs before it happens, even if your conversation volume climbs. With Respond.io, that same spike can turn into a higher bill without warning.
Feature comparison
Omnichannel inbox
Both platforms offer a shared inbox where the team handles WhatsApp and other channel conversations from one place, with assignment, tags and internal notes. The experience is fairly similar here, the real difference sits in the pricing model rather than the interface.
Automation and WhatsApp flows
Saysimple offers WhatsApp flow automation, chatbots and smart routing by department, built specifically around repetitive B2B processes like order status, product availability or appointment confirmations, without needing to upgrade plans to access it. Respond.io also leans heavily into AI and advanced automation, with visual flow builders and AI agents as a core part of its pitch, but its fuller automation and AI capabilities are mostly reserved for the Growth and Advanced plans rather than the entry tier.
WhatsApp call deflection
Saysimple offers WhatsApp call deflection, a feature Respond.io doesn't provide. When a support line is overloaded, a caller can choose to switch to WhatsApp from the phone queue, and the team continues the conversation by text instead of holding the line. For businesses with a high volume of service or aftersales calls, dealer groups and distributors especially, that takes real pressure off the phone.
Integrations and API
Both platforms offer their own API and CRM integrations, though the exact connector list varies by provider and changes over time. Before deciding based on a specific integration, it's worth confirming directly with each vendor whether your particular CRM or ERP is currently supported.
Support and onboarding: who gets you moving faster?
This is where Saysimple stands out for teams that need native language support: support and onboarding in Spanish, English and Dutch, with a team that stays involved through implementation. Respond.io's support runs primarily in English, which can slow down issue resolution for teams that prefer working in another language.
Can you migrate from Respond.io to Saysimple without losing history or service continuity? Yes. Saysimple's team supports the migration with guided onboarding, helping move templates, flows and channel configuration across so the switch doesn't interrupt your customer service.
When should you choose Saysimple over Respond.io?
Our take, after comparing both models: Respond.io only comes out cheaper month to month in one specific, increasingly rare scenario, a low and completely stable active contact volume with no spikes and no growth. The moment your business has seasonality, campaign spikes or growing customer numbers, a MAC based model starts penalizing you exactly when you need it least. For most companies evaluating this comparison, a flat licence like Saysimple's isn't just a preference, it's the lower risk option from month one.
It's a pattern that shows up fairly often with teams coming from another platform: they sign up at an attractive entry price, and months later a bill well above what they budgeted for, from quietly crossing the contact or conversation limit built into their plan, forces a rethink. This isn't one specific customer of ours, it's a common situation across the sector with usage based pricing, and it's exactly the risk a flat licence removes from month one.
A real example of why predictability matters is the Airzone case, a Spanish climate control manufacturer. They used to run support through WhatsApp Web, which limited access to a handful of users and had no integration with their CRM (HubSpot), creating duplicated work and poor traceability. With Saysimple they centralized communication, automated replies with bots and flows, and connected the channel directly to HubSpot, all at a cost they knew in advance. The result: response times up to 6 times faster, and a team that, in their own words, would "recommend this solution to any company looking to centralize communication, improve customer service, and scale efficiently."
Summary comparison table
| Criteria | Respond.io | Saysimple |
|---|---|---|
| Pricing model | Monthly Active Contacts (MAC), with overage in blocks of 100 | Flat monthly licence per plan, no automatic volume overage |
| Entry price (annual) | $79/month (Starter), $159/month (Growth, 1,000 MAC), before MAC overage charges | €119/month (Grow, 3 users, 2,000 contacts) |
| Channels | WhatsApp, Instagram, Messenger, web chat | WhatsApp, web chat and other channels, plus WhatsApp call deflection |
| Support | Primarily English | Spanish, English and Dutch, with guided onboarding |
Frequently asked questions about Respond.io and Saysimple
Do Respond.io and Saysimple use the same pricing model?
No. Respond.io charges by Monthly Active Contacts (MAC) with possible overage in blocks of 100. Saysimple offers a flat monthly licence with optional modules, without that automatic overage.
Does Saysimple have features Respond.io doesn't?
Yes, WhatsApp call deflection is one, built to take pressure off a busy support phone line.
Which one fits mid sized companies better?
For teams that value native language support alongside a predictable monthly cost, Saysimple tends to be the better fit, especially if contact volume shifts with the season.
Can I migrate from Respond.io to Saysimple?
Yes. Saysimple's team supports the process with guided onboarding to move templates and configuration across without interrupting service during the switch.
Closing thoughts
Respond.io's entry price only wins in the specific case of a low, predictable active contact count, uncommon for most businesses that grow or see seasonal demand. For nearly everyone else, what actually matters isn't the price in month one, it's what happens to your bill the month that volume takes off, and that's where Saysimple's flat licence comes out ahead.
Ready to try a transparent alternative to Respond.io?
If you want to see what your monthly cost would look like with a flat licence instead of a Monthly Active Contact model, request a free demo with the Saysimple team and we'll walk through your specific setup together.
Sources
- Respond.io: official pricing page (respond.io/pricing), for the plans, rates and Monthly Active Contact overage policy cited in this comparison.
