Nowistay and Smily are both French-born PMS platforms; Smily, formerly BookingSync, has been part of Guesty since September 2026. Smily relies on template-based scheduled messaging plus Smily AI smart replies. Nowistay, founded in 2024, ships an AI co-host that is autonomous by default, from 12 EUR per property per month, with Airbnb, Booking.com, Vrbo, and Expedia connections.

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Get started nowSmily, formerly BookingSync, is a PMS and channel manager born in France: the product was built in 2005, had paying customers from 2010 and was rebranded in 2022. Since 17 September 2026, Smily has been part of Guesty. Alongside its core PMS and channel management, it offers a B2B App Center and an open API.
The platform offers calendar synchronization, channel distribution to major OTAs (Airbnb, Booking.com, Vrbo), automated messaging, Smily AI (smart replies and emergency detection), payment processing, native yield management, and a website builder. Smily has a strong presence in the French market and Southern Europe.
Nowistay pairs a full PMS and channel manager with AI guest communication that is autonomous by default on every plan. Founded in 2024 in Bordeaux, France.
Direct integration with Airbnb, Booking.com, Vrbo, and Expedia. Includes digital welcome guide with upselling, smart locks, dynamic pricing through PriceLabs, direct booking, KYC, and team coordination. 10,000+ daily messages, 12 EUR per property per month with automatic volume pricing down to 8 EUR.
Smily relies on scheduled automated messaging via templates, plus Smily AI smart replies and emergency detection.
Nowistay's AI reads each message, understands context, and composes helpful natural responses in seconds, 24/7, in any language. Truly autonomous - the AI responds directly without host approval.
Nowistay: Direct integration with Airbnb, Booking.com, Vrbo, and Expedia. Real-time synchronization.
Smily: Channel management connecting to major OTAs (Airbnb, Booking.com, Vrbo) and additional European channels.
Nowistay: Fully autonomous AI handling complete guest communication. 10,000+ messages daily. Multilingual.
Smily: Scheduled automated messages via templates and triggers, plus Smily AI smart replies.
Nowistay: OTA distribution through Airbnb, Booking.com, Vrbo, Expedia, plus direct booking.
Smily: B2B App Center of partner apps and an open API.
Nowistay: Digital welcome guide with built-in upselling shop.
Smily: No native welcome guide or upselling platform.
Nowistay: Integrated smart lock management (Nuki, igloohome, TTLock, Tedee, HomeIt, plus Yale, Schlage, August and KeyNest as paid options) with automatic code generation. Codes can also be set to match the last 6 digits of the guest's phone number.
Smily: Limited native smart lock integration.
Nowistay: PriceLabs integration (separate PriceLabs subscription), with rates synced to every channel.
Smily: Native yield management, plus external dynamic pricing providers.
Nowistay: Built-in KYC verification.
Smily: Guest registration for compliance.
Nowistay: EUR 12 (USD 15) per property per month, billed monthly. Automatic volume pricing applies to the whole account: EUR 11 from 5 properties, EUR 10 from 10, EUR 9 from 50, EUR 8 from 100. 30 properties = EUR 300/month, AI co-host included. First month free, no credit card required.
Smily: Mainly a commission on bookings plus a monthly minimum; no public per-listing price. With Nowistay, the price is fixed per property and the AI handles messaging.
Smily is an established platform in the French and European market, part of Guesty since September 2026.
But Nowistay brings the same French market understanding paired with technology that fundamentally changes what's possible. Its AI co-host is autonomous by default on every plan, from 12 EUR per property per month with volume pricing down to 8 EUR.
Gain a competitive edge and meet travelers' expectations for instant responsiveness. Intelligent automation is no longer an option: it has become a standard in professional vacation rental management.
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