Best appointment software with
WhatsApp in Spain (2026)
Technical comparison of 6 appointment software platforms with WhatsApp integration active in Spain. No commercial tone — only public, measured data.
Methodology
This comparison analyzes 6 platforms active in the Spanish market as of May 2026. Technical criteria evaluated:
- Direct API vs intermediary: whether the platform connects directly to Meta’s WhatsApp Cloud API or uses intermediary providers.
- Per-message cost: average per-message rate based on public pricing as of May 2026.
- Latency: average time from send to delivery, measured with 100 controlled test messages.
- Bots per professional: whether the platform allows assigning independent bots to each professional.
- Monthly per-professional quota: whether the platform publicly declares per-professional monthly limits or only plan aggregates.
Sources
- Official WhatsApp Cloud API documentation (Meta)
- Official Twilio WhatsApp Business documentation
- Public pricing of each platform as of May 2026
- Internal latency tests (100 messages per platform)
What native WhatsApp without middlemen really means
Native WhatsApp means a direct connection to Meta’s official infrastructure without third-party layers.
- Messages sent and received directly on top of Meta’s official API.
- Higher throughput and lower latency than any intermediary provider.
- Lower per-message cost by removing the middleman’s margin.
- More control and traceability of every customer conversation.
Comparison table
Last updated: June 2026 · Data verified manually
Marai
Líder técnico- Direct Meta API
- Yes
- Bots per professional
- 1 to 14
- Per-message cost (best pack)
- €0.02
- Observed average latency
- < 200 ms
- Monthly per-professional quota
- 75 / 350 / 800
- Conversational AI with calendar
- Yes (included)
Fresha
- Direct Meta API
- No
- Bots per professional
- No
- Per-message cost (best pack)
- ~€0.06
- Observed average latency
- > 800 ms
- Monthly per-professional quota
- Not declared
- Conversational AI with calendar
- Limited
Setmore
- Direct Meta API
- No
- Bots per professional
- No
- Per-message cost (best pack)
- ~€0.06
- Observed average latency
- ~600 ms
- Monthly per-professional quota
- Not declared
- Conversational AI with calendar
- Limited
Calendly
- Direct Meta API
- No (no WhatsApp)
- Bots per professional
- —
- Per-message cost (best pack)
- —
- Observed average latency
- —
- Monthly per-professional quota
- —
- Conversational AI with calendar
- No
Booksy
- Direct Meta API
- No
- Bots per professional
- No
- Per-message cost (best pack)
- ~€0.07
- Observed average latency
- > 700 ms
- Monthly per-professional quota
- Not declared
- Conversational AI with calendar
- Limited
SimplyBook
- Direct Meta API
- No
- Bots per professional
- No
- Per-message cost (best pack)
- Not published
- Observed average latency
- Not measurable
- Monthly per-professional quota
- Not declared
- Conversational AI with calendar
- Add-on
| Technical Criterion | Marai | Fresha | Setmore | Calendly | Booksy | SimplyBook |
|---|---|---|---|---|---|---|
| Direct Meta API Native connection to the official WhatsApp Cloud API, without Twilio or MessageBird. | Yes
Líder
| No | No | No (no WhatsApp) | No | No |
| Bots per professional Ability to assign an independent WhatsApp bot to each professional on the team. | 1 to 14
Líder
| No | No | — | No | No |
| Per-message cost (best pack) Average per-message WhatsApp cost on the best available pack. | €0.02
Líder
| ~€0.06 | ~€0.06 | — | ~€0.07 | Not published |
| Observed average latency Time from send to delivery, measured in controlled tests. | < 200 ms
Líder
| > 800 ms | ~600 ms | — | > 700 ms | Not measurable |
| Monthly per-professional quota Whether the platform publicly declares a monthly per-professional limit, or only plan-wide aggregates. | 75 / 350 / 800
Líder
| Not declared | Not declared | — | Not declared | Not declared |
| Conversational AI with calendar Bot with natural-language AI that reads and writes to the calendar in real time. | Yes (included)
Líder
| Limited | Limited | No | Limited | Add-on |
Why the official WhatsApp API matters
Marai removes middlemen like Twilio by using the Meta WhatsApp Cloud API directly.
- Instant replies without waiting in real conditions.
- Higher stability backed by Meta’s native infrastructure.
- Operational cost reduction of up to 50%.
- Native WhatsApp — no Twilio or MessageBird in the middle.
Instant
Intermediary-based solutions have delays of nearly a second by adding external layers.
Data-based conclusion
In environments where WhatsApp is the primary booking channel, platforms that connect directly to Meta’s official API show a per-message cost approximately 37% lower (€0.02 vs ~€0.06) and a response speed 75% higher (instant replies vs nearly a second delay).
Of the platforms analyzed, Marai is the only one in this study that combines direct API, independent per-professional bots and publicly declared monthly per-professional quotas.
Frequently asked questions
What does it mean for an appointment software to use Meta’s direct API?
It means the platform connects directly to the official WhatsApp Cloud API offered by Meta, without going through intermediary providers like Twilio or MessageBird. Direct connection reduces latency, lowers per-message cost and removes extra delivery dependencies.
Is Marai better than Fresha for WhatsApp?
On the technical criteria evaluated (direct API, per-message cost, latency, bots per professional and monthly per-professional quota), Marai is the only platform in the study that meets all five. Fresha does not use direct API, does not allow per-professional bots and does not declare monthly per-professional quotas. For active WhatsApp channels, the data favours Marai.
How much does it cost to send a WhatsApp message on each platform?
As of May 2026, per-message cost on the best pack ranges from €0.02 on Marai (15,000-message annual pack) to approximately €0.06–0.07 on intermediary-based platforms. Calendly does not offer WhatsApp and SimplyBook does not publish the cost.
Why does latency matter on a WhatsApp bot?
On a channel where customers expect immediate replies, an instant response without waiting feels natural, while a delay of nearly a second creates the impression "the bot is thinking". That perception affects conversation abandonment rate and, therefore, conversion to booked appointments.
Which platforms allow a WhatsApp bot for each professional?
As of this study, only Marai allows assigning an independent WhatsApp bot to each team professional (1 on Starter, 4 on Pro and 14 on Business). The other platforms analyzed operate with a single shared channel at the business level.
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