> ## Documentation Index > Fetch the complete documentation index at: https://docs.gallabox.com/llms.txt > Use this file to discover all available pages before exploring further. # Seamless Messaging > Turn on Seamless Messaging for a WhatsApp number, and reply to customers from the inbox after the 24-hour window closes. > **Who can use this?** > Admins turn Seamless Messaging on or off for a WhatsApp number. Once it's on, every agent who can reply in the inbox can use it. > [!NOTE] > > **Seamless Messaging** keeps the reply box open after the 24-hour window closes, so agents can keep replying to customers without picking a template. To learn how it works and what to use it for, see [Understanding Seamless Messaging](https://docs.gallabox.com/guide/seamless-messaging.md). ## Turn on Seamless Messaging **1. Open your WhatsApp channel settings** Go to **Channels**, open your WhatsApp number, and go to the **Configuration** tab. **2. Turn on Seamless Messaging** On the **Seamless Messaging** card, turn the switch on. Only admins can change this switch. Other roles see the card but can't change it. **3. Wait for it to get ready** The card shows **Getting ready** while Gallabox sets it up for your number. This usually takes a few minutes, and can take up to 24 hours. Admins get an email when it's on. ### Card states | State | What it means | | :- | :- | | **Off** | Seamless Messaging isn't on. After 24 hours, agents continue with an approved template, as before. | | **Getting ready** | Gallabox is setting it up. The inbox works as before until it's ready. | | **On** | Your team can reply to any customer, anytime, from the inbox. | | **Setup didn't complete** | Gallabox couldn't finish setting it up for this number, so it stays off. Reach out to [support@gallabox.com](mailto:support@gallabox.com) for help. | ### Turn off Seamless Messaging On the **Seamless Messaging** card, turn the switch off. After 24 hours, agents continue with an approved template, as before. You can turn it back on at any time. *** ## Reply after 24 hours When a customer hasn't messaged in the last 24 hours, the reply box looks the same as usual. A few signs show that the window has closed: * A **⚡ Seamless** badge in the reply box toolbar. * A **24h window closed** label showing the customer's last reply date. * A divider in the chat marking when the window closed. **1. Open the conversation** Open the customer's conversation in the inbox. **2. Type your message** Type up to 3 lines in the reply box. A counter under the box shows how many characters and lines you have left. **3. Send it** Select **Send**. The message shows a ⚡ next to the time, and the closing line appears under it in italics. To send a file, select the attach icon, choose **Image**, **Video** or **Document**, and add a caption of 1 to 3 lines. ### What a message can include * **Up to 3 lines of text.** You can't add a 4th line. If you paste longer text, shorten it to 3 lines before sending. Blank lines are skipped. * **Up to 1,024 characters**, including the closing line. * **An image, video or document**, with a caption of 1 to 3 lines. Gallabox tidies the text before sending: tabs become spaces, and long runs of spaces are shortened. A note under the reply box tells you when this happens. Audio, location and contact messages aren't available after 24 hours. They work again once the customer replies. ### If a message isn't delivered A message that doesn't reach the customer shows **Not delivered** with the reason in plain words, for example "This number isn't on WhatsApp." If a message can't be sent right now, the reason says when to try again. You can always send an approved template instead. ## FAQs > **Do agents need to do anything differently?** > > No. Agents type and send as usual. The ⚡ Seamless badge and the 24h window closed label tell them the window has closed, but the way they reply doesn't change. > **What happens when the customer replies?** > > The 24-hour window opens again, and messages go out as normal WhatsApp replies, without the closing line. If the customer replies while an agent is typing, the text the agent typed is kept. > **Can I still send templates after 24 hours?** > > Yes. **Send Template** stays in the reply box, so you can send any approved template as before. > **Why can't I see the Seamless Messaging switch?** > > Only admins can turn Seamless Messaging on or off. If you're not an admin, ask an admin on your account. > **Setup didn't complete. What should I do?** > > Reach out to [support@gallabox.com](mailto:support@gallabox.com). Until it's set up, your inbox works as before. ## Related articles * [Understanding Seamless Messaging](https://docs.gallabox.com/guide/seamless-messaging.md): how it works, what customers receive, and what to use it for * [Omnichannel Inbox](https://docs.gallabox.com/conversations/omnichannel-inbox.md): how conversations work in the inbox * [Custom Marketing Templates](https://docs.gallabox.com/whatsapp/templates/custom-marketing.md): the way to send offers and promotions This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.