Is Viber the best messaging API for Bulgarian businesses?
For domestic Bulgarian consumers, yes — Viber is repeatedly ranked the #1 messenger with very high phone penetration. Launch a commercial Rakuten Viber bot (token + HTTPS webhook + subscribe model) and Business Messages via official partners for CRM. Use WhatsApp/Ominiflow for export customers and markets where Meta leads.
Last updated: 4 September 2026
Bulgaria sits in Viber’s European core: industry charts put Viber as the #1 messaging app with penetration often cited near 90%. If your CRM, support queue, or promo calendar still assumes Facebook Messenger or email first, you are fighting habit.
Full API detail: Viber Business API guide. Official: REST Bot API Get Started.
Start here
- Domestic BG → Viber commercial bot
- Export / EU B2B buyers → often WhatsApp or email
- Bulgarian copy + keyboards; optional English for SoftUni/IT corridors
- GDPR consent naming Viber; honour
unsubscribed - Broadcast ≤300 IDs per call; store subscriber graph yourself
Why Bulgarian teams adopt Viber bots
- Near-universal consumer install base vs fragmented SMS
- Rich media for fashion, cosmetics, grocery promos
- Reliable utility alerts (bill, delivery, appointment)
- Lower friction than app push for mid-market brands without a native app
Implementation checklist (Bulgaria)
- Commercial bot via Rakuten or partner listing Bulgaria
X-Viber-Auth-Tokenin secrets managerset_webhook→ EU HTTPS, verify signature header- Map events: message, delivered, seen, failed, subscribed, unsubscribed, conversation_started
- Welcome message in Bulgarian ≤5 minutes after open
- Business Messages for opted-in MSISDN journeys
- Monitor
billing_status,noBalance,freeMessagesExceeded
BG industry plays
Retail & e-commerce
Cart nudge (subscribed only), shipment tracking, NPS survey keyboard.
Banking & utilities
Statement ready, outage, meter read — keep marketing suppressed from utility threads.
Healthcare & clinics
Appointment remind / confirm / cancel buttons; minimise clinical detail in chat.
IT & outsourcing exporters
Keep Viber for Bulgarian employees/customers; run client WhatsApp on Ominiflow.
GDPR & local practice
Document lawful basis, channel-specific consent, retention, and processor agreements with your Viber partner. Do not reuse email marketing consent as Viber consent without clear wording.
FAQ
Is Viber bigger than WhatsApp in Bulgaria? expand_more
For consumers, industry reports say yes. Validate with your cohort — Gen Z urban users may dual-home.
Can I broadcast to all Viber users in BG? expand_more
No. Only subscribed bot users (Bot API) or consented Business Messages traffic via partners.
Does Ominiflow send Viber in Bulgaria? expand_more
No — WhatsApp Cloud API only. Pair channels by audience.
Related
Greece · Serbia · Ukraine · Contact Ominiflow
Updated 4 September 2026. Confirm commercial terms with Rakuten Viber or an official partner.
