Sending
Inbox
Every reply lands here, in the same conversation as the campaign message that prompted it. One thread per person, whatever it started as.
The 24 hour window
This is the rule that shapes everything else. When someone messages you, a 24 hour window opens and you can reply with anything: text, images, documents. Each new message from them starts the 24 hours again.
When it closes, free text is refused. To reach them again you send an approved template, and their reply opens a new window.
Replying
Open a conversation and type. The remaining window time is shown above the box, and the box is disabled with an explanation once it closes.
Attachments work the same way: images, video, audio, and documents, inside the window only. Replies and attachments are free: WhatsApp stopped charging for service messages in July 2025, and this box only opens inside the window.
Sharing the work
| Tool | What it does |
|---|---|
| Assign | Puts one person's name on the conversation so two people do not answer at once. |
| Status | Open or closed. Closing hides it from the default view. |
| Unread | Counts messages that arrived since anyone last opened the thread. |
Attachments
An attachment is fetched from Meta the first time somebody opens it, then kept in storage and served from there. Meta holds an attachment for 30 days, so one nobody opens in that time cannot be fetched later.
Forms
When somebody submits a WhatsApp Flow form you sent them, it appears in the conversation as a form: each answer under its label, and any photo or document they uploaded as a link that opens it. The conversation list shows the first few answers, so you can see what came in without opening it.
A form that arrives saying no answers came back was submitted from a flow whose last step returns nothing. See Templates with a form.
What Sendrix does not show yet
These arrive and are recorded, but appear as plain text rather than as themselves.
- Reactions.
- Shared contact cards.
- Locations, which show as coordinates.
- Which earlier message a reply was quoting.
If replies are not arriving
The inbox depends entirely on webhooks. If nothing is coming in, check Logs to see whether Meta is delivering events at all, then Webhooks.