Repeater Destination

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This destination is maintained by Segment.

Getting Started

The Repeater destination forwards events from a source back into another source, as though that event occured in the second source.

Events are not cached in the Repeater, so it only handles real-time events. You can specify multiple sources as Repeater destinatons.

Segment does not double count MTUs for Repeater events.


Add the Repeater as a destination for the source that you would like to replicate events from.

Find the source that you would like events to flow to, and copy the write key from that source.

Go back to the Repeater destination and add this write key to the write keys list for Repeater.

You can do this for as many sources as you need.

Repeater will replay all events it gets to the sources you specified using the write key(s) you specified.


You can send computed traits and audiences generated using Segment Personas to this destination as a user property. To learn more about Personas, contact us for a demo.

For user-property destinations, an identify call is sent to the destination for each user being added and removed. The property name is the snake_cased version of the audience name, with a true/false value to indicade membership. For example, when a user first completes an order in the last 30 days, Personas sends an Identify call with the property order_completed_last_30days: true. When the user no longer satisfies this condition (for example, it’s been more than 30 days since their last order), Personas sets that value to false.

When you first create an audience, Personas sends an Identify call for every user in that audience. Later audience syncs only send updates for users whose membership has changed since the last sync.

Supported Sources and Connection Modes

Before you start, make sure Repeater supports the source type and connection mode you’ve chosen to implement. You can learn more about connection modes here.

Web Mobile Server
📱 Device-mode
☁️ Cloud-mode

Segment offers an optional Device-based Connection Mode for Mobile data going to Repeater, so that you can use Repeater features that collect data directly from the mobile device. To do this, you must package the Segment-Repeater mobile SDK with the Segment mobile library.


Segment lets you change these destination settings from the Segment app without having to touch any code.

Write Keys

This is the array of source write keys you want to repeat data into.

This page was last modified: 22 Nov 2019

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