Customer Engagement & Messaging Software (2026)
Compare top omnichannel messaging CRMs for WhatsApp, LINE OA, Zalo, and Messenger to engage Southeast Asian consumers.
For SEA businesses, conversational commerce is non-negotiable. **Kaojao** is excellent for LINE-heavy markets like Thailand. **Qontak** by Mekari and **WATI** dominate WhatsApp-centric regions like Indonesia and Malaysia. For broader regional support integrating Messenger and WhatsApp, **SleekFlow** and **BotStar** provide scalable inbox consolidation.
The Tools in Detail
Kaojao
E-commerce · From THB 1390/month · Thailand · TH
Kaojao is a Thai social-commerce assistant that automates the chat side of selling on Facebook, Instagram, and LINE Official Account: auto-replying to comments and inbox messages, pulling comments into the inbox so orders are not lost in threads, broadcasting to past customers, and printing delivery slips. Its Kaojao Live module handles CF live-selling — capturing comment orders from a Facebook Live, deducting stock automatically, and opening bills with payment-status tracking. A Sale Page builder ships landing pages with Facebook Pixel, TikTok Pixel, Google Tag Manager, and Google Analytics attached, and the platform can pull bank-transfer slips automatically for payment checking. The vendor states its bots reach more than 5,000,000 Facebook, Instagram, and LINE users per month.
Kaojao is built for the way Thai social sellers actually operate: closing sales inside Facebook comments and LINE chats rather than on a storefront, running CF live sales, and verifying payment from bank-transfer slips. Comment-to-inbox capture, automatic slip retrieval, and LINE OA selling are core features rather than integrations, and pricing is published in Thai Baht.
Best for: Thai Facebook and Instagram page sellers closing orders in comments and chat; CF live-selling merchants who need comment orders captured and stock deducted during a Facebook Live; Sellers running Facebook, Instagram, and LINE OA from one inbox without hiring more admins
Mekari Qontak
CRM & Customer Engagement · From USD 25/month · SEA, Indonesia · ID / EN
Mekari Qontak is an Indonesian omnichannel CRM and customer-engagement platform and an official Meta WhatsApp Business API provider. It unifies WhatsApp, Instagram, Shopee, Tokopedia, and other channels in one inbox, routes chats to agents or an AI chatbot, and records conversations as deals in the CRM. Part of the Mekari business-software group, it is aimed at sales and support teams that run most of their customer conversations through WhatsApp.
In Indonesia most buying conversations happen on WhatsApp, not email, so a CRM that does not center chat misses where deals actually move. Mekari Qontak is an official WhatsApp API provider with the CRM and inbox built around it, plus marketplace channels Indonesian sellers rely on. It fits SMEs with a real sales or support team; solo sellers can start with free WhatsApp Business before paying per agent.
Best for: Indonesian SMEs selling and supporting over WhatsApp; Sales teams tracking deals from chat to close; Support teams consolidating marketplace and social messages; Businesses needing the official WhatsApp API with multi-agent access
Wati
AI Assistant · From USD 49/month · Global, SEA, Singapore, Malaysia, Indonesia, Philippines, Thailand, Vietnam · EN / ID / MS / TH
Wati is a Singapore-headquartered WhatsApp Business Solution Provider (BSP) with built-in AI for chatbot automation, broadcast campaigns, and shared team inboxes. Used by 11,000+ SEA SMEs to manage WhatsApp customer support, sales workflows, and marketing broadcasts at scale on the official Meta Business API.
Wati owns the SEA SME WhatsApp Business API niche between consumer-grade Sleekflow and enterprise Twilio Conversations. Pricing starts at USD 49 per month for the standard tier and scales to USD 299 for the business tier with full automation. For a Malaysian or Singaporean SME running 5,000-30,000 monthly WhatsApp conversations, Wati is roughly 60 percent cheaper than building on Twilio direct, and the SEA-tuned templates are good enough out of the box. Sleekflow is the better pick if you also need LINE and Facebook Messenger in one inbox; Wati is the right pick for WhatsApp-only operations.
Best for: Singapore and Malaysian SMEs running WhatsApp-first customer service; Indonesian and Filipino e-commerce sellers using WhatsApp for order updates; SEA D2C brands running broadcast campaigns to opted-in customers; Real estate and financial services teams qualifying leads on WhatsApp
SleekFlow
Commerce · Freemium · Free tier · Global, SEA · EN / TH / ID / VI / MS / ZH
SleekFlow is a Hong Kong-headquartered omnichannel customer engagement platform combining WhatsApp Business API, Instagram, Facebook Messenger, LINE, and SMS into a single inbox with automation, broadcast, and CRM features. Used heavily by SEA retailers and DTC brands for sales conversion and post-purchase support.
SleekFlow's native LINE support makes it one of the few omnichannel platforms that handles both Thai LINE traffic and ASEAN WhatsApp traffic in the same inbox. For SEA retailers selling across Thailand and Indonesia, that single integration matters more than the price difference vs Respond.io.
Best for: Singapore and Malaysia DTC brands on WhatsApp; Thai retailers running LINE official accounts; Indonesian e-commerce sellers handling WhatsApp orders; Vietnamese small businesses with Zalo and WhatsApp customers
BotStar
AI Assistant · Freemium · Free tier · Global, SEA · EN / VI
BotStar is a Messenger and website chatbot platform built by WiseBit Pte Ltd, headquartered in Singapore with an engineering office in Da Nang, Vietnam. It offers a no-code visual flow builder, live chat human hand-off, and audience segmentation used by SMEs across Vietnam, Singapore, and wider Southeast Asia for customer support and lead capture on Facebook Messenger and website widgets.
BotStar's engineering team operates out of Da Nang, Vietnam, while its holding company WiseBit Pte Ltd is headquartered in Singapore. It has been used by 150,000+ businesses globally with a concentration of Vietnamese and Southeast Asian SMEs on Facebook Messenger, the dominant customer-service channel in the region.
Best for: Vietnamese SMEs automating Messenger customer support; Singapore and regional businesses running lead-capture chatbots; E-commerce sellers needing FAQ automation without code; Marketing teams running broadcast campaigns on Messenger
Respond.io
Marketing · From USD 79/month · Global, SEA · EN / MS / TH / ID / VI / ZH / ES
Respond.io is a Kuala Lumpur-founded customer conversation platform that consolidates WhatsApp Business API, Line, Messenger, Instagram, Telegram, and SMS into a single AI-powered inbox. Used by 10,000+ businesses globally with particular strength across SEA, where messaging-first customer support is the norm.
Founded and headquartered in Malaysia, with deep native support for the messaging apps SEA actually uses - Line in Thailand, WhatsApp across MY/SG/ID/PH, and Zalo for Vietnamese teams via integrations. No markup on Meta WhatsApp pricing is a meaningful edge for SEA SMEs.
Best for: SEA e-commerce teams on WhatsApp / Line; Sales teams running chat-first lead nurture; Agencies managing multiple client inboxes; Customer support teams across messaging apps
Mixdesk
CRM & Customer Engagement · Freemium · Free tier · Global · EN / ZH
Mixdesk is a customer-conversation platform that brings WhatsApp, Instagram, Facebook Messenger, TikTok, LINE, Telegram, web chat and email into one shared inbox, with automation, broadcasts and knowledge-grounded AI agents that answer common questions, qualify leads and hand conversations to human teammates. It launched in 2024 as the global brand of the company behind Meiqia, a customer-service product that began in 2014. The legal entity is Beautiful Interaction International Co., Limited, and the company lists offices in Hong Kong, Shenzhen and Hangzhou. Pricing is published in US dollars and is charged per plan rather than per seat: every plan, including the free one, allows unlimited teammates.
Mixdesk's case in Southeast Asia rests on two published facts. First, LINE: it connects LINE Official Accounts through the official Messaging API, with broadcasts, feedback-button workflows and routing across multiple accounts, which is the channel that decides whether a messaging tool is usable in Thailand. Personal LINE accounts are not supported. Second, the pricing shape: plans are flat, with unlimited teammates on every tier, so a ten-person support team pays the same plan price as a two-person one. What Mixdesk publishes: a website in English, Simplified Chinese and Traditional Chinese, prices listed in US dollars, and three offices on its about page, in Hong Kong, Shenzhen and Hangzhou. We draw no conclusion from that about its presence in Southeast Asia. Regional staff or partners, local-language support, the languages of the workspace itself, the data hosting region and Southeast Asian customers are all unverified: Mixdesk is checking these and we will publish its answers, dated, when they arrive. Until then this page carries no Thailand or Southeast Asia rating. The eight channels it lists do not include Zalo, Viber or marketplace chat, so Vietnamese and Philippine teams should check channel fit first. Disclosure: Mixdesk submitted itself for listing on 2026-09-21. This profile was built from Mixdesk's own public pages and sent to the vendor for fact-checking; no fee was paid and the listing does not affect any ranking.
Best for: Teams running a LINE Official Account who also answer customers on WhatsApp, Instagram or TikTok and want one inbox; Support and sales teams whose headcount is growing faster than their conversation volume, where per-seat pricing is the main cost driver; Cross-border sellers who serve customers in a language the team does not speak and want translation inside the inbox; Teams that want to try an AI agent on real conversations before committing, using the free plan plus the 3-day trial
SEA Operational Reasoning
Consumers in Southeast Asia bypass email in favor of chat apps. They expect to inquire, negotiate, and even purchase directly within WhatsApp, LINE, Facebook Messenger, or Zalo. Managing these channels on native consumer apps becomes impossible as teams scale. Omnichannel messaging platforms consolidate these disparate chat apps into a single shared team inbox, allowing for automated routing, chatbot triage, and CRM integrations. Choosing the right tool depends heavily on your country's dominant app: LINE for Thailand, Zalo for Vietnam, and WhatsApp/Messenger elsewhere.
- ↗Mixdesk publishes Free ($0, 10 conversations), Essential ($49 a month) and Pro ($199 a month, AI Agents with 5,000 AI messages) plans plus a custom Expert plan, with no per-seat fees and unlimited teammates on every planverified 2026-09-21
- ↗Mixdesk connects LINE Official Accounts through the official LINE Messaging API; personal LINE accounts are not supportedverified 2026-09-21
"Verified" means read on the vendor's own published pages on the date shown. We do not run hands-on tests, and a statement a vendor confirmed to us directly is labelled as vendor-confirmed. Software-listing.com is independent and may earn affiliate commissions from some links.
The questions operators actually ask.
Why not just use WhatsApp Business app?
The WhatsApp Business app is designed for micro-businesses and is tied to a single device (or limited linked devices). Once you have a customer support or sales team of more than 2-3 people, you need a shared inbox built on the WhatsApp Business API (like WATI or Qontak) to avoid collisions and track performance.
Can I broadcast messages to my customers?
Yes, tools connected to official APIs allow you to send broadcast messages (e.g., LINE Broadcasts or WhatsApp templates), but you must comply with the platform's strict opt-in rules and pricing tiers for outbound messages.
Do these tools integrate with Shopify?
Yes, leading messaging tools like SleekFlow or Respond.io integrate directly with Shopify, allowing agents to see a customer's order history next to their chat window.
Which omnichannel inbox does not charge per agent?
Mixdesk publishes flat plan pricing with unlimited teammates on every tier: Free at $0 with 10 conversations, Essential at $49 a month and Pro at $199 a month, with AI Agents starting at Pro (read on its pricing page 2026-09-21). It covers LINE Official Accounts through the Messaging API, WhatsApp through Meta's Cloud API, Instagram, Messenger, TikTok, Telegram, web chat and email. Zalo is not among the channels it lists, its site is in English and Chinese, and prices are in US dollars. Mixdesk asked to be listed; the facts here come from its own pages.