Respond.io alternatives: 9 tools to compare

Who this list is for: businesses answering customers on WhatsApp

If your customers would rather message you than call, you already know the problem. Messages arrive on WhatsApp, Instagram, Facebook and your website chat, several people reply from different phones, and nobody's sure who promised what. Respond.io is one option for handling those conversations, but it isn't the only one, and the right swap depends on whether you're mostly selling, mostly supporting, or building something custom.

This page is for owners and team leads at businesses that handle customer conversations in messaging apps every day, from a busy online shop to a service company booking appointments over chat.

Three ways to run messaging, and which tools fit each

• A shared team inbox: Chatwoot and Trengo are pitched at managing customer communication across channels, so check how each handles assigning and handing over conversations.
• Selling inside the chat: Interakt, Kommo, Wati and Zoko are positioned around WhatsApp and messenger-based sales, marketing and engagement.
• Building on APIs: Bird and Twilio describe APIs for messaging, and Gupshup describes AI agents across channels, so ask each what you'd need to build yourself.

Most small businesses belong in the first two groups. The API platforms are powerful, but they assume someone on your side will write and maintain code. If that person doesn't exist, choose an inbox or a commerce tool and move on.

Respond.io alternatives, A to Z

They're in no particular order beyond the alphabet, with one line each on who the vendor builds for.

Bird

Best for: Senders delivering notifications, marketing broadcasts and two-way customer replies across email, SMS, WhatsApp, Apple Messages and voice.

Chatwoot

Best for: Support teams wanting open-source customer support for live chat, email, WhatsApp and social, self-hosted or in the vendor's cloud.

Gupshup

Best for: Larger companies deploying AI agents across channels, with enterprise-ready infrastructure in the vendor's words.

Interakt

Best for: Shops automating customer engagement with WhatsApp automation, chatbots and notifications.

Kommo

Best for: Sales teams who want an AI-powered CRM built for messenger-based sales.

Trengo

Best for: Customer teams who want omnichannel communication managed from a single dashboard, with automated workflows.

Twilio

Best for: Developers building on APIs for SMS, RCS, voice and email, plus conversational AI.

Wati

Best for: Sellers supporting and marketing on WhatsApp, Instagram and TikTok, with broadcasts and chatbots.

Zoko

Best for: Shopify brands running sales, marketing and support from one WhatsApp number.

How the nine compare by platform type

Tool	Platform type	Good for
Bird	Omnichannel messaging	Notifications, broadcasts and replies
Chatwoot	Open-source support	Live chat, email, WhatsApp and social
Gupshup	AI agents	Conversations across channels
Interakt	WhatsApp automation	Chatbots and notifications
Kommo	Messenger CRM	Messenger-based sales
Trengo	Omnichannel platform	One dashboard for communication
Twilio	Messaging APIs	SMS, RCS, voice and email
Wati	WhatsApp and social	Broadcasts plus chatbots
Zoko	Shopify WhatsApp	Store sales on one number

Questions to ask about the WhatsApp side

WhatsApp business messaging runs through Meta's official business platform, so every tool here sits on top of the same rules about templates, opt-in and message windows. What differs is how easy each tool makes them. During a trial, ask how template approval works, how the tool shows when a customer's reply window is about to close, and whether broadcasts respect opt-outs automatically.

• Can two team members see the same conversation and who's replying?
• Can you tag conversations by topic, such as order issue or new enquiry?
• Does it connect to your shop or CRM so the order or customer record sits beside the chat?
• Can a chatbot hand over to a person without the customer repeating themselves?

It's also worth asking what happens to your conversation history if you leave. Some tools let you export chats with tags and notes, others only keep them inside the platform. You won't think about this on day one, but it matters the first time a customer asks what was agreed three months ago, or when you want to see which questions come up most often so you can answer them on your website instead.

Finally, look at reporting. A good messaging tool tells you how long customers wait for a first reply, which team member handles which conversations and which channels bring in the most enquiries. Those three numbers tell you whether you need another person on the inbox, more automation or simply better saved replies.

Customer chats are customer data

A shared inbox holds names, phone numbers and the details of every complaint or order, so treat it like any other customer record. GOV.UK's guide to data protection for your business notes that the rules apply to information you keep on staff, customers and account holders. Before you switch, check who on your team can see which conversations, how long chats are kept, and how you can delete them if a customer asks.

If you mostly want automated replies, my list of WhatsApp chatbot builders goes deeper on bots, and if email is your main channel, these Front alternatives cover shared email inboxes.

My advice before you move your messaging inbox

Work out whether chat is mainly a sales channel or a support channel for you, because that decides the group you choose from. Then move one channel first, usually WhatsApp, run it for a fortnight with your real team, and only add the others when everyone's comfortable with assigning and handing over conversations.

Do you make WhatsApp or omnichannel messaging tools? Tool makers can ask to be considered for a featured place on this list.

Want your tool on this list? Featured spots and reviews here are paid partnerships. Here's how to partner with me.

Frequently asked questions

Do I need the WhatsApp Business API to use these tools?

For a shared team inbox or broadcasts, most of these tools connect through Meta's official business platform rather than the free WhatsApp Business app. The tool usually guides you through connecting your number.

Can I keep my existing WhatsApp number?

Often you can move an existing number to a business platform provider, but the process and any downtime vary. Check each vendor's own setup guide before you commit.

Is a shared inbox better than a chatbot?

They do different jobs. A shared inbox helps people reply together, while a chatbot answers routine questions automatically. Many businesses use a bot for the first reply and a person for the rest.

How do I handle customer data in chat tools?

Limit who can see conversations, set how long chats are kept and know how to delete a customer's messages on request. Treat chats like any other customer record.