Both Trengo and respond.io unify popular messaging channels and boost customer engagement with broadcast, AI and conversation analytics tools. But when it comes to cost predictability at scale and mature omnichannel automation, their capabilities and value differ widely. Find out which solution best fits your needs.
Trengo | respond.io | |
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WhatsApp Capabilities | ||
WhatsApp Business Solution Provider | ||
WhatsApp Business Calling API | ||
WhatsApp Catalog | ||
Broadcasts | Add-on | |
Omnichannel Capabilities | ||
Supported Channels | ||
Calls |
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Customer Lifecycle Automation | ||
Customer Lifecycle Management | Configurable custom field with workflow/AI automation — no pre-set stages, activity log, or analytics | Purpose-built system with pre-set stages, automatic assignment, activity log, and dashboard analytics |
Chat Automation Workflows | ||
Click to Chat Automation Triggers | ||
Reports | 2 report types (Agent performance, AI Reporting) | 12+ report types (dashboard, lifecycle, calls, conversations, contacts, sales leaderboard, agent/team performance, broadcasts) |
AI Features | ||
AI Agent | ||
AI Assisted Message Drafts | ||
AI Conversation Summaries | ||
AI Knowledge Sources | Snippets, websites (including help centers), and document uploads (PDF/TXT/CSV) | Document uploads (PDF, TXT, MD, CSV, DOCX, PPTX, PPSX, images) and website URL crawling |
Copilot | AI-first, in-platform setup guidance for Owners and Managers | |
Voice AI Agent | ||
AI integration with Automated Workflows | ||
Support and Stability | ||
Onboarding Support | Personalized onboarding included on all plans | Platform onboarding guide included + 30-day onboarding program (add-on) |
Chat Support Availability | No live support on entry plan; mid/enterprise only, Monday–Friday 09:30–18:30 Central European Time | 24/7 human + AI support on all plans |
Support via Call | Pro plan and above | Available on all plans |
Security | ||
Two-Factor Authentication (2FA) | ||
Single Sign-On (SSO) | ||
GDPR Compliant | ||
ISO 27001 Certified | ||
Contact Info Masking | ||
Integrations | ||
CRM: HubSpot & Salesforce | ||
Make, Zapier & n8n | ||
Webhooks | ||
Google Sheets | ||
Webhook: Voice Calls | ||
Pricing | ||
Entry |
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Mid-tier |
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Advanced |
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(Contact respond.io for customized enterprise plans) |
Additional fees |
| None |
*Monthly Active Contacts refers to the contacts you chat with in a month. Instead of paying for stored contacts, only pay for the contacts you actually talk to.
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Built for scale, not stress
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Achieve success across the funnel
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Transparent pricing, predictable costs
Trengo may get you started, but respond.io adds the channels, lifecycle automation and native mobile access Trengo doesn't have.
Calls and chat in one inbox
While Trengo does not support some key channels and charges additional fees for VoIP, respond.io unifies calls, email, WhatsApp, TikTok, Facebook Messenger, Instagram and more.
Customer lifecycle management
Prioritize high-intent leads, design customer journeys for each lifecycle stage or identify common drop-off points with analytics.
No surprise AI bill
Trengo charges $0.34 for every AI-assisted conversation, on top of the plan fee, with no free allowance. Respond.io includes an AI credit allowance in every plan, with pay-as-you-go overage only once you exceed it — no forced plan upgrade.
Reliable support
Trengo's entry tier has no live chat or phone support at all. Respond.io includes 24/7 human + AI support on every plan, including Starter.
Native integrations
Enrich data with HubSpot, Salesforce, Google Sheets and more — HubSpot from the Growth plan, Salesforce from the Advanced plan.
Data-driven insights
Track response times, ad and broadcast performance, and conversions to turn insights into revenue.
Comprehensive lead generation
Capture leads from Meta and TikTok, qualify and reply instantly with AI, then optimize performance with detailed analytics.
Sales tools that convert
Automate bookings, share product info instantly with Meta Catalogs and accelerate high-value or critical deals with voice calls.
Customer retention at scale
Grow customer loyalty with targeted broadcasts for promotions, renewals, upgrades and CSAT surveys.
Respond.io is best suited for mid-market B2C businesses that generate revenue through high-volume customer conversations, particularly in industries like automotive, beauty, e-commerce, education, healthcare, hospitality, professional services, retail and travel. It's an especially strong fit for teams managing customer conversations across multiple locations or markets, where its automation, reliability and customer lifecycle tools deliver the most value. It isn't designed for businesses that primarily rely on group messaging on platforms like WhatsApp or Telegram, run seasonal rather than year-round campaigns, or depend on cold outreach as a core strategy.
Yes — eCommerce, hospitality, and travel are Trengo's own core audience, and respond.io handles the scenarios those industries actually require: promotional and retention broadcasts to segmented contact lists with no volume cap, cart recovery and appointment-confirmation workflows running across WhatsApp, Instagram, and email simultaneously, and ad-sourced lead qualification from Meta and TikTok routed directly into conversations without middleware.
Yes. Teams expanding across new markets or running multiple business units can configure separate workspaces on respond.io's Advanced plan and above — each with its own contact routing, agent permissions, and performance reporting. Central managers retain cross-workspace visibility without merging all teams into a single inbox.
Trengo is a good fit for small European support teams handling low-to-moderate inbound conversation volumes, with its entry plan supporting up to 500 conversations per month. It works well for businesses that primarily use WhatsApp and email and need a shared inbox without complex automation or AI requirements. Teams that exceed those volumes, operate across multiple channels or regions, or need revenue-generating workflows like lead qualification, lifecycle automation and broadcast campaigns will hit the limitations of Trengo's product and pricing model.
The most common triggers: conversation-cap billing that escalates unpredictably as volume grows; Trengo's native mobile app deprecated and replaced with a browser-based web app; and broadcast reliability issues at higher contact volumes. Teams that start on Trengo for support typically switch as they grow and need sales, marketing, and retention on the same platform — the full-funnel depth respond.io is built for from the start.
Respond.io is built for B2C teams where conversations drive revenue across the full customer lifecycle — from first contact through conversion and retention. The structural differences from Trengo: a Monthly Active Contacts (MAC) pricing model — you pay based on how many unique contacts you engage each month, not how many conversations you have with them; native support for 12+ channels including TikTok; 24/7 human + AI support on every plan; and lifecycle stage management to track contacts from first inquiry to closed deal. Respond.io is the right fit when conversations are a revenue function, not just a support channel.
Respond.io prices by Monthly Active Contacts (MAC) — the number of unique contacts you talk to each month, with unlimited conversations within that contact pool — so cost scales predictably with actual contact growth. Trengo prices by conversation volume and user seats instead: each plan caps both, and exceeding either forces a per-conversation overage fee or a jump to the next full-price tier, even for one additional user over the cap, so its cost jumps in steps at each plan boundary rather than scaling smoothly.
Book a tailored demo with our in-house experts to see how respond.io meets your specific use cases, or sign up for a free trial. When you're ready to make the switch, our onboarding team is happy to offer guided assistance for a smooth migration. After that, support is available 24/7 if you need any help.
Respond.io offers 24/7 human + AI support on every plan, including Starter, with scheduled success calls also included from Starter up. Trengo's live chat and phone support are restricted to Pro and Enterprise tiers — Boost plan customers have access to email and messaging only, with no live chat or phone support — and Trengo restricts dedicated success management to its Enterprise tier only. For teams troubleshooting outside European business hours, respond.io's 24/7 human + AI coverage has no gap; Trengo's does on Boost.
Yes. Respond.io has native iOS and Android apps with full inbox access, conversation management, and AI writing tools. Trengo deprecated their native mobile app and replaced it with a browser-based web app. Field agents, traveling sales reps, and managers get an app-store-installed native app on respond.io; on Trengo, mobile access is browser-based only.
Yes. Respond.io is ISO 27001 certified and GDPR compliant. Infrastructure is hosted on AWS with SSL encryption and two-factor authentication included across all plans, with Single Sign-On (SSO) available on the Advanced plan and above. European businesses handling customer data via WhatsApp, email, or other channels can operate on respond.io within GDPR requirements.
WhatsApp, Instagram, Facebook Messenger, TikTok, Telegram, email, SMS, live chat, and VoIP calling are all natively supported. No third-party integration or middleware is required for any of these channels. Respond.io is an official WhatsApp Business Solution Provider and Meta Business Partner.
Setup can be completed within hours or days — there's no implementation project to complete first. Respond.io's setup is self-guided with structured onboarding documentation, and 24/7 human + AI support is available on every plan — including Starter — if anything needs troubleshooting. Trengo's live support is unavailable on their Boost (entry) plan, which means Boost customers are on their own during setup.