WhatsApp vs Telegram for service businesses: which one to choose
By Marai ·
When you are looking for a messaging channel to communicate with your clients, the question comes up quickly: WhatsApp or Telegram? Both let you send messages, create groups, and automate responses. But for a service business in Spain — hair salons, clinics, beauty centres, physiotherapists — the choice is not as balanced as it might seem.
The number that defines everything: penetration in Spain
WhatsApp has a penetration rate above 95 % among smartphone users in Spain. It is, by a wide margin, the most widely used messaging app in the country. It is not just a communication tool — it is a habit. People in Spain use WhatsApp to talk with family, with friends, with their children’s school, and with the plumber. It is the channel where your clients already are.
Telegram, for its part, has a significantly smaller active user base in Spain. Although it has grown in recent years and has a loyal following, the majority of your clients do not use it as their primary daily communication channel.
This does not mean Telegram is a worse product. It means that if your goal is to reach the maximum number of clients with minimum effort, WhatsApp is where they already are.
Functional comparison for service businesses
| Feature | WhatsApp Business | Telegram Bot API |
|---|---|---|
| Penetration in Spain | Very high (95 %+) | Moderate |
| API for automation | Yes (Business API) | Yes (Bot API, free) |
| API cost | Per conversation (€0.02–0.08) | Free |
| Message templates | Requires Meta approval | No restrictions |
| Proactive message sending | Only with approved templates | No limitations |
| End-to-end encryption | Yes (personal chats) | Optional (secret chats) |
| Groups and channels | Groups up to 1,024 | Groups up to 200,000, unlimited channels |
| AI bots | Via BSP or integrated software | Native, no intermediaries |
| File size limit | 2 GB | 2 GB |
| Desktop interface | Linked to mobile | Independent |
Advantages of WhatsApp for your business
1. No need to convince anyone
Your client already has WhatsApp installed. They do not need to download anything new, create an account, or learn a different app. You send a reminder and they read it within seconds. This point is fundamental: every additional step you ask of the client — download an app, register — is a point at which you lose them.
2. Extremely high read rates
WhatsApp messages have an open rate far higher than email. For a service business, this translates directly into fewer no-shows: an appointment reminder via WhatsApp is read by nearly everyone. One via Telegram is read by whoever has the app installed and checks it regularly.
3. A sense of closeness
Clients perceive a WhatsApp conversation as something personal, close, and direct. It is the channel where they talk with the people in their lives. When your business reaches out via WhatsApp, the communication feels more natural than a corporate email or a push notification from an unknown app.
4. A mature business ecosystem
Meta has spent years building tools for businesses: product catalogues, business profiles, integrated payments (in some markets), message analytics, and a network of certified providers. The WhatsApp Business ecosystem is designed for professional business use.
Advantages of Telegram for your business
1. Free API with no restrictions
Telegram’s Bot API is completely free. There is no per-message cost, no need for template approval, and you can send proactive messages without any restriction. For a developer, building a bot on Telegram is far simpler and cheaper than on WhatsApp.
2. Channels for mass communication
If you want to send offers, news, or content to a large audience, Telegram channels are superior. You can have unlimited subscribers, schedule posts, and share multimedia content without the limitations of WhatsApp broadcast lists (which require the contact to have saved your number).
3. More powerful bots natively
Telegram bots are technically more flexible: inline menus, interactive buttons, embedded mini-apps, native payments. If your use case is technically complex, Telegram provides more native tools.
4. Independent desktop version
Telegram’s desktop version works independently of the mobile app. This is practical for teams that manage communications from a computer, without needing the phone to be connected.
So, which one should you choose?
For a service business in Spain, the answer is clear in most cases: WhatsApp as the primary channel.
The reason is simple: your clients are there. A reminder system, a booking chatbot, or an appointment confirmation only works if the client receives it and reads it. With WhatsApp, the probability of that happening is at its highest.
Telegram can work as a complementary channel for specific cases:
- Communities and content: If you want to create a channel with hair care tips, business news, or educational content, Telegram is the better tool.
- Tech-savvy clients: If your audience is young and technically oriented (developers, designers, etc.), they are more likely to use Telegram actively.
- Very tight budget: If you need automation but cannot absorb the cost of the WhatsApp API, Telegram’s free Bot API is a viable alternative.
But as the primary channel for operational communication — reminders, confirmations, cancellations, appointment management — WhatsApp wins on reach.
The multi-channel strategy
The ideal is not to pick one and discard the other. It is to have WhatsApp as the primary channel and, optionally, Telegram as a content or niche-specific channel.
In practice, for a service business, this means:
- WhatsApp for all transactional communication: reminders, confirmations, cancellations, post-appointment follow-up
- Email as a backup channel for those who do not use WhatsApp (there is always a small percentage)
- Telegram (optional) as a content, promotional, or community channel
Marai lets you configure the preferred communication channel for each client. If someone prefers to receive reminders by email rather than WhatsApp, that preference is respected. The key is that the channel adapts to the client, not the other way around.
The cost of not deciding
The worst scenario is not making the wrong choice between WhatsApp and Telegram. It is using neither and continuing to send reminders by hand — or not sending them at all. Every no-show you could have prevented with an automatic reminder is money you lose.
If you do not yet have an automated communication system for your clients, start with WhatsApp. That is where they are, it is what they know, and it is what they will open.
Discover how WhatsApp integration works in Marai →
Read more about automated reminders →
Start for free → — WhatsApp included from the Starter plan (€29/month).