> This page is part of the [Customer.io documentation](https://docs-customerio.netlify.app). For the complete index, see [llms.txt](https://docs-customerio.netlify.app/llms.txt).
> Last updated: June 25, 2026

# Inbound statuses and activities

We show activities for inbound messages to help you understand who replied to your messages. If you expect people to respond to a message as a call to action, you can use these activities to track and troubleshoot responses.

## The Replied status

Most messages have statuses like `sent`, `delivered`, and `opened`. For WhatsApp messages, we also track `replied` when someone replies to your message.

## Replies in the Activity Log

When you look at a person’s activity or the *Activity Log*, you can sort by the *Replied to WhatsApp* activity to see replies to WhatsApp messages. Each activity shows the conversation and the complete reply.

You might look at these activities to see replies in context or to troubleshoot whether inbound messages contained what you expected.

## Use replies as conversion goals

Unlike events, you can’t use an inbound message directly as a conversion goal. You can, however, use a reply as criteria for a segment and treat segment membership as the goal.

So, for example, if your goal for a campaign is to get replies to a survey, you could create a segment containing people who replied to the survey and use that segment as your conversion criteria.

## Attributing replies to your messages

We attribute a reply to the original delivery if the reply occurs within 72 hours of the original delivery. If the reply occurs outside the 72-hour window, we won’t attribute it to the original delivery.

This means that replies sent outside the 72-hour window aren’t counted as conversions or logged as a metric for a particular message, campaign, broadcast, and so on.

*   *   [The Replied status](#the-replied-status)
    *   [Replies in the Activity Log](#replies-in-the-activity-log)
    *   [Use replies as conversion goals](#use-replies-as-conversion-goals)
    *   [Attributing replies to your messages](#attributing-replies-to-your-messages)

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