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Multichannel strategy: WhatsApp, Instagram and SMS together

A true multichannel marketing strategy with WhatsApp and Instagram doesn't mean being everywhere at random, but gathering every conversation - from whatever channel it comes - in a single place where your team can reply consistently. Today a customer can discover you from an Instagram post, ask you a question in DM, receive a confirmation SMS and continue on WhatsApp. If each channel lives in a separate app, messages get lost and replies arrive late. Let's see how to build a multichannel flow that holds everything together.

Why multichannel isn't optional

Customers don't think in terms of channels: they think in terms of convenience. One prefers Instagram, another WhatsApp, yet another only reads SMS. If you force them to use your preferred channel, you lose contacts. A well-executed multichannel strategy meets the customer where they already are and then guides them toward the channel best suited to conversion, without forcing them to start over every time.

The channels and their roles

• Instagram Direct: great for initial engagement, DMs from ads and comments that turn into conversations.
• WhatsApp: the channel for rich conversation, where sales are closed, bookings are made and support is given.
• SMS: the safety net to reach those who aren't active on the other channels or for essential alerts.
• Email, Telegram, Messenger, widget and Voice AI: they round out coverage for every type of audience.

The problem with separate inboxes

Managing each channel with a different app creates three concrete problems: messages get lost because no one checks all the apps in real time; replies are inconsistent because different operators don't see the history; you don't have a single view of the customer because their story is fragmented across tools. The result is that a hot contact who arrived from Instagram cools down while waiting for a reply no one has seen.

A single inbox for all channels

The solution is a multichannel inbox: all conversations - WhatsApp, Instagram, SMS, Telegram, Messenger, Email, widget and Voice AI - flow into a single screen. Each contact has a card with their complete history, regardless of the channel used. The team assigns chats, collaborates and replies without jumping from one app to another. The customer experiences a smooth conversation; you see everything from one place only.

Attach tags to channels: apply a tag like 'lead-instagram' or 'customer-whatsapp' as soon as the conversation comes in. That way you can then create targeted campaigns by origin and measure which channel brings the best contacts.

A multichannel flow that works

• Attract: an ad or an Instagram post brings the user into a DM or a WhatsApp chat.
• Qualify: the AI agent replies immediately, collects the information and assigns a tag.
• Convert: the conversation continues on WhatsApp with catalog, payment link or booking.
• Retain: follow-up and reactivation via WhatsApp, with support SMS for those who don't reply.

The AI that replies on every channel

Replying in real time across multiple channels is impossible for a small team. This is where SendApp's trainable AI agent comes in: it replies 24 hours a day on all connected channels with the answers you've taught it, qualifies contacts and passes the conversation to a human operator (handover) when a manual intervention is needed. That way no message goes unanswered, regardless of the time and channel.

How to do it with SendApp

SendApp Agent was built as a multichannel platform: you connect WhatsApp (official Meta API with templates and green tick, or WhatsApp Web via QR with no per-message costs), Instagram, Telegram, Messenger, SMS, Email, the website widget and Voice AI, and you manage them all from a single inbox. Contacts live in a CRM with tags, broadcast campaigns use the variables {name}, {phone} and {email}, and the AI agent replies on every channel with handover to the team. Plans start at 19 euros a month; WhatsApp Cloud API messages are billed by Meta with no SendApp markup. The interface is available in 6 languages.