Viber Chatbots — Complete Guide 2026

What makes Viber different from every other chatbot channel

Viber is structurally closer to WhatsApp than Telegram — a per-message commercial channel with destination-priced rates, monthly minimums, and an application-gated bot creation flow. Three architectural facts shape every deployment.

Three commercial message types with separate rate cards. Rakuten Viber's Business Messages API distinguishes transactional (account alerts, OTP, shipping, appointments), promotional (marketing campaigns with rich media and buttons), and conversational messages. A conversational session opens for 24 hours when a user messages the business; in-session messages from the business are billed at the conversational rate, typically lower than promotional or sometimes free depending on destination. The structure echoes WhatsApp's pre-2025 conversation categories with different rates and session window. See our WhatsApp channel guide for the Meta-side math.

Bot creation is commercial-terms-only since February 2024. Before 2024 Viber permitted hobby bots on consumer accounts. Since 5 February 2024, all bots are created via the commercial application at forbusiness.viber.com — there is no free Bot API in the Telegram sense. The minimum monthly commitment is €100 per active sender for most destinations, €150 for Belarus, Bulgaria, Greece, Hungary, Iraq, Moldova, Russia, Ukraine, and the UAE. Rakuten waives the minimum for the first calendar month after registration. Even a low-volume pilot has a non-trivial floor cost, against zero floor on Telegram.

Rich-media support is generous; 1-way and 2-way supported. The REST Bot API supports text, picture, video, file, contact, location, sticker, carousel, and rich-media keyboards with up to six button rows. Authentication is X-Viber-Auth-Token containing the application key from More > Settings > Bots > Edit Info. Webhook is set via set_webhook pointing to a TLS-certified URL. Both inbound and outbound flows are supported; not broadcast-only.

What this means for buyers. Viber is high-quality inside its strong markets and a poor choice everywhere else. Unlike Telegram, it is not a budget-friendly "test the pattern" channel — the minimum commitment makes pilots expensive. Unlike WhatsApp, the addressable global audience is smaller. Pick Viber when your flow already fails to meet customers on Viber, not because Viber is on a feature checklist.

Viber's business landscape in 2026

The global MAU is harder to pin down than for any other major messenger because Rakuten has not published refreshed figures since 2014, when Viber reported 209M MAU at acquisition. Independent 2025-2026 estimates range from ~260M (Expandedramblings) to 800M+ (Demandsage, Market.biz). Chatbotscape treats global MAU as "estimated several hundred million, concentrated geographically" rather than committing to a single figure that cannot be primary-sourced.

What can be primary-sourced is per-country market share, cross-confirmed by Sinch's most-popular-messaging-apps digest and Messaggio's Viber-market analysis. Geographic concentration is unusually steep for a top-tier messenger:

• Ukraine — dominant at ~97% market share in published 2021 figures; ~29% of Viber's global traffic per Similarweb. Commerce, banking, and SMB support route through Viber.
• Belarus — #1 messenger at ~90% market share.
• Greece — ~90% smartphone penetration; country's most-used messenger, ahead of WhatsApp and Messenger.
• Moldova — dominant alongside Telegram.
• Vietnam — on ~66% of smartphones; about one in four Vietnamese uses Viber.
• Philippines — smartphone penetration ~71%; APAC user growth +22% per Rakuten Viber's 2022 disclosure.
• Broader CIS — Russia, Kazakhstan, Uzbekistan, Armenia see meaningful adoption alongside Telegram, weighted to B2C transactional traffic.

Outside this footprint Viber is niche. US, UK, German, French, Brazilian, Indian, Indonesian SMBs reach more customers on WhatsApp, Instagram DM, Telegram, or web widget. Viber is high-ROI inside its footprint and low-ROI outside — the line is sharper than for any other channel we cover.

The business surface is mature — Viber for Business serves banking, e-commerce, logistics, healthcare, and government across CIS and Greece, processing high volumes of OTP, shipping, and appointment traffic. Rakuten's 2026 policy refresh updated the B2B section of the Business Accounts Terms with more detailed business-partner-data processing language — a maturity signal rather than structural change.

Use-cases best suited for Viber

Viber's combination of regional penetration, transactional rate card, rich media, and conversational sessions concentrates on operational and customer-care flows.

Transactional alerts and OTP in Ukraine, Belarus, Greece, Moldova. SMS-replacement use cases route more reliably and cheaper on Viber than SMS. Greek and Ukrainian per-message rates of €0.01-€0.02 run 2-5× below domestic SMS.

E-commerce post-purchase flows for CIS and Greek customers. Order confirmations, dispatch, delivery updates, review requests perform better on the customer's primary messenger than email. Promotional rich-media catalogs layer on the back of conversational sessions opened by the customer.

Customer support deflection on the conversational rate. When a user initiates, the 24-hour session typically applies lower rates than business-initiated messages. A customer service chatbot with strong AI deflection — measured as intent recognition accuracy on the primary language — can resolve much of inbound traffic in the cheaper window. Per-language NLU is decisive for Ukrainian, Greek, Vietnamese, Russian. Our six-scenario protocol measures this as Scenario D.

Appointment reminders for Greek and CIS service businesses. Dentists, salons, and clinics in Athens, Kyiv, Minsk, Tbilisi see better same-day confirmation rates on Viber than email or SMS. Read-receipt gives a clearer "delivered and read" signal than SMS.

Broadcast campaigns with opt-in. Promotional messages with media and CTAs enable broadcast to opted-in lists. Every promotional message must include a clear opt-out path; AUP prohibits unsolicited bulk messaging. Diaspora-focused SMBs (Vietnamese, Greek, Ukrainian) also benefit from a channel customers already use across borders, where alternatives are fragmented SMS or expensive WhatsApp routes.

Poor fits: SMBs serving US, UK, German, French, Brazilian, Indian, Indonesian, LATAM customers; SMBs unable to commit €100-€150/month at pilot volumes; cold prospecting (AUP prohibits it); operators wanting a free experimentation channel (Telegram is the right call).

Best chatbot platforms for Viber in 2026

The shortlist covers eight platforms supporting Viber Business Messages at SMB-accessible price points. Selection: Viber verified on current product pages or partner directories, commercial application available, and Viber treated as first-class or near-first-class rather than experimental. The set is narrower than for WhatsApp or Telegram because fewer multi-channel platforms surface Viber natively.

• SendPulse — strongest native no-code Viber surface for SMBs. Visual builder unified across WhatsApp, Messenger, Instagram, Telegram, Viber; on platform since 2017 for campaigns, since 2023 for dedicated chatbots. Pro ~$12/month monthly-billed at 500 subs; per-message volume paid through to Rakuten on top.
• Infobip — enterprise-grade CPaaS and BSP; cleanest public Viber rate card at infobip.com/viber-business/pricing. Native deployment across 15+ channels. Pricing upper-SMB to enterprise.
• Twilio — developer-led CPaaS with Viber Business Messages sender alongside SMS, WhatsApp, RCS. Best for in-house developer capability; Studio low-code builder covers Viber. Pay-as-you-go.
• edna.io — Russian and CIS-strong messaging platform with transparent Viber rate card in USD and EUR; popular with CIS retail and financial SMBs.
• Messaggio — multichannel with native Viber, WhatsApp, SMS, RCS and published per-country rate card. Often selected for parallel SMS + Viber campaigns in CIS and EE.
• Dexatel — UAE-based CPaaS with Viber, SMS, WhatsApp; serves Middle East, EE, APAC.
• BulkGate — Czech CPaaS with Viber and SMS senders; per-country rate card and Make/Zapier.
• Respond.io — multichannel with Viber as one of seven native channels alongside WhatsApp, Messenger, Instagram, Telegram, LINE, web chat. Mid-market positioning.

Two notable absences. Manychat does not natively support Viber as of May 2026 — channel set is WhatsApp, Instagram, Messenger, Telegram, SMS, email, TikTok. Manychat-anchored buyers need a parallel platform. Aimylogic is CIS-strong and historically supported Viber on legacy surfaces, but Viber is not foregrounded in the 2026 integration list. Verify directly before committing.

Comparison: which platforms support Viber and at what tier

How to read this table. "Native" = first-class Viber Business Messages sender in the builder or platform UI. All native senders ultimately route through Rakuten's commercial pricing; the platform's subscription sits on top of Rakuten's per-message and minimum-monthly-commitment costs. "Session pricing tier" indicates whether the platform exposes conversational, transactional, and promotional types as distinct billable line items.

Setting up your first Viber chatbot — the operational sequence

The Viber setup sequence is more involved than Telegram and roughly comparable to WhatsApp Business API onboarding through a BSP. Plan 1-3 business days from commercial application to first live test.

Step 1 — Apply for commercial bot access. Since 5 February 2024 bots are commercial-terms-only. Application starts at forbusiness.viber.com — supply business registration, brand assets, intended use case, destinations, message-type mix. Rakuten reviews and assigns a service ID. Hobby bots can no longer be created via the consumer app.

Step 2 — Create the Public Account / Service ID. Once approved, the application key appears under More > Settings > Bots > Edit Info > Your app key. Treat it like a password.

Step 3 — Set the webhook via REST API. Call set_webhook at developers.viber.com with a TLS-certified URL. Every request requires the X-Viber-Auth-Token header. Most no-code platforms (SendPulse, Infobip Answers, Respond.io) automate this once the token is pasted in.

Step 4 — Configure account metadata. Set bot avatar, display name, privileges, location, country, category in the Business portal. Public Accounts can be 1-way (broadcasts only) or 2-way (conversational). Modern deployments use 2-way for conversational session pricing.

Step 5 — Build the conversational flow. Wire welcome flow, intent routing, customer service chatbot deflection, human handoff, knowledge-base AI, analytics, fallback. For multi-locale (Ukrainian, Greek, Vietnamese, Russian), validate per-language NLU during build — vendor claims of "50+ languages" rarely match measured intent accuracy on Cyrillic, Greek, Vietnamese.

Step 6 — Test, iterate, bill. Send test messages on the conversational rate. Validate carousels, rich-media, opt-out keywords, callbacks. Route 20-50 real users before broadcast. Monitor delivery, opt-out, AI deflection — high opt-out triggers AUP review. Confirm per-destination rate card and €100/€150 minimum with Rakuten or BSP partner; first month after registration is commitment-free.

Viber-specific pricing models — how the math works

Viber pricing is structurally different from Telegram (free at channel layer) and from WhatsApp (Meta conversation categories). Two anchor facts.

Three message-type rate cards. Transactional carries the lowest business-initiated rate per destination. Promotional carries the highest (typically 1.5-3× transactional). Conversational — inside a 24-hour session opened by an inbound message — is typically cheapest and in some destinations is free. Per the rate card verified 26 May 2026, Greece transactional outbound is ~€0.02/message; Vietnam ~€0.01; Russia ~€0.01. Inbound rates are billed separately in many destinations.

Minimum monthly commitment per service ID. €100 per active sender for most destinations; €150 for Belarus, Bulgaria, Greece, Hungary, Iraq, Moldova, Russia, Ukraine, the UAE. First calendar month after registration is waived. If organic volume exceeds the minimum, only delivered messages are billed. A low-volume pilot in Greece is floor-priced at €150/month before per-message fees, plus platform subscription — meaningfully higher cost-of-experimentation than Telegram (zero) or early-stage WhatsApp via a BSP free tier.

Builder subscription is a separate line. ~$12/month on SendPulse Pro at 500 subs; quote-based on Infobip and Respond.io; pay-as-you-go on Twilio. Total landed for an SMB pilot in Greece running ~5,000 transactional messages/month: €150 minimum (covers ~7,500 transactional at €0.02) + $12 SendPulse Pro ≈ €160-€175/month.

Real-cost example. A Kyiv e-commerce SMB processing 8,000 orders/month (8,000 transactional outbound + ~2,000 conversational + 1,000 promotional broadcasts) at illustrative Ukraine rates lands pre-minimum at €125-€200. Because the €150 minimum applies, floor is €150. Plus ~$12/month SendPulse Pro. Total: €165-€215/month. Equivalent WhatsApp in Ukraine costs more before BSP markup; SMS more still. Verify rates direct against forbusiness.viber.com and triangulate with at least one BSP partner quote (Infobip, edna.io, or Messaggio).

Compliance and policies — what gets bots restricted

Viber's compliance posture is materially stricter than Telegram and broadly comparable to WhatsApp Business — opt-in, content review, and AUP enforcement are structural.

Opt-in is mandatory for promotional messages. Per the Business Accounts Terms and AUP (both verified 26 May 2026), businesses must obtain consent before sending promotional messages, and every promotional message must surface a clear opt-out path. Under GDPR and ePrivacy in EEA/UK, consent must be specific, demonstrable, and tied to date and time — Rakuten requests audit-trail evidence in disputes.

AUP prohibits bulk unsolicited messaging. The published AUP prohibits bulk messages or auto-calls without consent, harassment, and sharing private information without permission. Messages inside Communities or Channels are subject to the same policy. Enforcement is reactive — sustained abuse triggers throttling, suspension, or permanent restriction.

Content categories. Viber Business Messages prohibit illegal goods, unregulated financial promotions, regulated pharma without local licensing, adult content, hate speech, and gambling without jurisdictional licensing. Specific lists vary by destination — Infobip's compliance page is a useful reference.

Transactional vs promotional under GDPR. Transactional messages are typically lawful under GDPR Article 6(1)(b) as processing necessary for contract performance. Promotional relies on consent under Article 6(1)(a) and ePrivacy opt-in. Mixing the two in a single message is a frequent failure mode — keep templates structurally separate.

Regional overlay. GDPR (EU/UK), Vietnam's Personal Data Protection Decree (effective 2023), Greek DPA guidance, and Ukrainian data protection law all apply. Local representation may be required for non-EU senders targeting EEA recipients. Rakuten updated the Business Accounts Terms in 2026 with more detailed B2B processing language — documentation refresh rather than structural shift, but legal teams handling DPA negotiation should review.

Related tools for Viber on Chatbotscape

Viber tooling sits earlier in our roadmap than WhatsApp or Instagram because the addressable audience is smaller. Three categories come up repeatedly:

• Viber broadcast cost calculator — landed monthly cost across transactional, promotional, conversational volume by destination, including the €100/€150 minimum. Roadmap: /tools/viber-broadcast-cost-calculator.
• Viber Public Account name validator — checks proposed Service ID names against Rakuten's naming rules. Roadmap: /tools/viber-public-account-name-validator.
• Viber + SMS fallback router — visualises Viber-first-with-SMS-fallback routing for transactional flows in CIS, Greek, and Vietnamese deployments. Roadmap: /tools/viber-sms-fallback-router.

Operationally, several WhatsApp tools on Chatbotscape are useful for Viber too — cost-modelling and template-planning logic transfers well.

FAQ

Is a Viber chatbot free to build? No — not since 5 February 2024. Bots are commercial-terms-only via forbusiness.viber.com, with a €100 monthly minimum per active sender for most destinations or €150 for Belarus, Bulgaria, Greece, Hungary, Iraq, Moldova, Russia, Ukraine, the UAE. First month is waived. Some no-code platforms (SendPulse Free) include a free builder layer, but Rakuten Viber fees still apply once volume exists.

What is the best Viber chatbot platform for Greece? For SMB no-code, SendPulse is the deepest native surface at SMB price points. Infobip is the strongest enterprise option with full Greek rate-card transparency. Messaggio and BulkGate are credible CPaaS alternatives. Greece is in the €150 minimum tier.

Viber vs WhatsApp for business — which should an SMB pick? Geography decides. WhatsApp is primary in LATAM, India, Indonesia, MENA, Iberia, most of Western Europe outside Greece; see our WhatsApp channel guide. Viber is primary in Ukraine, Belarus, Greece, Moldova, and present in Vietnam and the Philippines. Inside the Viber footprint, Viber outperforms WhatsApp on reach and read-rates; outside it, WhatsApp wins.

Can I use a Viber chatbot for e-commerce? Yes — Viber Business Messages support order confirmations, dispatch, delivery slot updates, cart-recovery, and review requests. Native checkout is not first-class the way Telegram Mini Apps and Stars are; checkout typically routes to a web store via button or carousel CTA. Strongest fit is post-purchase comms.

Does Viber support conversational AI and modern AI agents? Yes — the Bot API supports rich media, carousels, and webhook-based AI routing, so any AI agent producing structured responses can run on Viber via SendPulse, Infobip Answers, or Respond.io. Per-language NLU is decisive for Ukrainian, Greek, Vietnamese, Russian — vendor claims rarely match measured intent accuracy on Cyrillic and Greek without per-language tuning. Our six-scenario protocol measures this as Scenario D.

How long does it take to deploy a Viber chatbot? Plan 1-3 business days from commercial application to first live test, plus 2-4 hours platform-side flow build on SendPulse or Respond.io. Faster than WhatsApp Business API (4-24 hours plus template approval), slower than Telegram (10-20 minutes).

Does Viber work for the Philippines or Vietnam market? Yes. Philippines smartphone penetration ~71% with strong APAC growth historically; Vietnam ~66%. Both are in the €100 minimum tier. For SMBs serving these markets alongside Western ones, Viber is the better APAC transactional channel than Telegram.

Why isn't Manychat on the Viber platform list? Manychat does not natively support Viber as of May 2026. The channel set is WhatsApp, Instagram, Messenger, Telegram, SMS, email, TikTok. Manychat-anchored buyers need a parallel platform (SendPulse, Infobip, or Respond.io fit cleanest).

Is Viber the right channel for my US-focused SMB? Almost never. US penetration is low and concentrated in immigrant, CIS-, Vietnamese-, and Greek-diaspora segments. For US-only SMBs, web widget, Instagram DM, SMS, and email outperform Viber on every dimension.

Does Chatbotscape earn commissions from the platforms in this guide? Some, but not all. Per our methodology page, a per-platform affiliate disclosure shows which platforms we earn from. Scoring is locked before the affiliate-link layer is added; the hands-on protocol is identical regardless of affiliate program.

About this guide

Chatbotscape launched in 2026. This Viber channel guide is part of our channel deep-guide cluster. We acknowledge a new editorial publication cannot claim the accumulated authority of established analyst sources; our response is to publish methodology openly, anchor every Rakuten Viber Business Messages API claim to Viber Developers Hub primary-source documentation with verification dates, explicitly handle data uncertainty (Viber's MAU is reported as a defensible range rather than a single fabricated figure given Rakuten's silence since 2014), and invite reader feedback explicitly. If you find an error in API mechanics, regional rate examples, or platform comparison, write to editorial@chatbotscape.com — we respond within reasonable time as the editorial team scales — typically 7-14 business days for substantive review.

Related on Chatbotscape

Platform reviews: SendPulse (deepest native no-code Viber surface) · Manychat (no native Viber — flagged for buyers anchored on Manychat).

Other channel guides: WhatsApp Chatbots — Complete Guide (alternative in SEA outside Vietnam/Philippines and in Greece for younger demographics) · Telegram Chatbots — Complete Guide (alternative in CIS at zero channel cost, narrower business tooling) · Instagram Chatbots — Complete Guide (Meta-ecosystem complement for diaspora consumer brands) · Facebook Messenger Chatbots — Complete Guide (legacy Meta channel) · Website widget guide (own-channel surface for product-led Viber-adjacent SMB stacks).

Methodology: full methodology page · six-scenario testing protocol · pricing methodology · Value for Money baseline · data refresh cadence · monetization disclosure.

Glossary: conversational AI · intent recognition · conversation design · customer service chatbot · human handoff.

Channel guide version: 2026-Q2 (v3.12.1) • Last verified: 26 May 2026 • Next scheduled refresh: 26 August 2026 (90-day Tier 1 cadence per our refresh policy) • Editorial: Chatbotscape Editorial