---
title: "Deploying a Broadcast Experiment"
slug: "iterable-deploying-a-broadcast-experiment"
updated: 2025-07-17T20:08:13Z
published: 2025-07-17T20:08:13Z
canonical: "support.jacquard.com/iterable-deploying-a-broadcast-experiment"
---
> ## Documentation Index
> Fetch the complete documentation index at: https://support.jacquard.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Deploying a Broadcast Experiment
Start by creating a new campaign.
[](https://downloads.intercomcdn.com/i/o/409302466/bd48f55817c731c085f38922/image.png?expires=1749658500&signature=d5a9f18db65191ffb65216ac9ef671713658493b6830491e8fb03afb57324ba5&req=cCAuFcl8mYdZFb4f3HP0gIsTht7tkMtCDYiT%2FldUxe4VtnPRmYQ4%2FEjQyLP5%0AyTt8j%2Fhtm2KYUrbLfg%3D%3D%0A)
Set up the campaign as you normally would by giving it a unique name and selecting the campaign type and audience.
[](https://downloads.intercomcdn.com/i/o/580225763/f2089f818c4ed550ea4ef1d7/image.png?expires=1749658500&signature=be5f957b9cd7100f34a167467fad0ece9e5f2dafa691ee6ba68722d43bbfee92&req=cSgnFMt7modcFb4f3HP0gEadf6P0lawy4x%2BAxb7llsDekKXUZ4y88YPtkTHL%0ADueutlhwXi7EbiI0og%3D%3D%0A)
### Attach data feed
Once you have selected the template, you'll enter the **Design** stage where you'll need to attach the data feed you created for the campaign. Click **Edit details** in the **Details** panel.
[](https://downloads.intercomcdn.com/i/o/580230646/e7f395ce414cbf3dfc391158/image.png?expires=1749658500&signature=faa526be81bc9db5a916d35660394ce18819e5a6969b8bd05eb557acaf9883ae&req=cSgnFMp%2Bm4VZFb4f3HP0gKVyDpeAivXBJ8Cbk4%2BoR6NFSIpEqWC9ZIn2i519%0AxYUG7gtC4MwoaBtZKw%3D%3D%0A)
Scroll down under you see **Data feeds**. Check the box for **Connect data feeds for dynamic template creation** and then select the data feed for this campaign using the dropdown menu.
[](https://downloads.intercomcdn.com/i/o/580231988/ea890d7dbe061e714abfe4b2/image.png?expires=1749658500&signature=ce68f5f648352d830e9f1ab04255ccb5a4f2053e4ef0523eddcc8f2628ccd30d&req=cSgnFMp%2FlIlXFb4f3HP0gMFCDQNWh%2B6LiEW79ngCGEdXUcX8m5%2Bai%2FMzKwK4%0AQ25Tf%2FkP7ol9ALQ7EQ%3D%3D%0A)
Ensure **Cache data feed response** is unchecked. The **Merge the data feed and user contexts** and **Use data feed alias** options should be checked.
[](https://downloads.intercomcdn.com/i/o/580234903/d941845e4463257dfe3475f6/image.png?expires=1749658500&signature=e0ae50b8647da90341b8b42b61638bf6d1d1d1d578cc09e350b90ca4271e7fcc&req=cSgnFMp6lIFcFb4f3HP0gO9j0ktB9YPWAv18OdKqmMvpR3viMAzytdbHPTuJ%0A4yOPL3a52tHf5zcuFA%3D%3D%0A)
With your data feed attached, configure the **Subject** using the handlebars alias you created and the returned value **variant_text** in the following format:
```plaintext
{{your_data_feed.variant_text}}
```
You'll simply need to replace **your_data_feed** with the actual alias you chose. Using our WeeklyOffers data feed example, our **Subject** field is:
[](https://downloads.intercomcdn.com/i/o/580242290/b5b84ae68b977b87eab7e191/image.png?expires=1749658500&signature=94fa0027f0330323ef7e94f792fe05089be83581b018c6e74875c059c22a301e&req=cSgnFM18n4hfFb4f3HP0gKyxuZLbpu9lqVKNTTL4IFhAv7l9vKFpCb9l3uKw%0APgoiM4ecKvSQnUDT3A%3D%3D%0A)
With both steps complete, scroll up and click **Save** at the top of the **Details** panel.
[](https://downloads.intercomcdn.com/i/o/580246217/969acdb530367d98a3475883/image.png?expires=1749658500&signature=0d4056a7c457ca71d3cb29d270c7402cb1c241e83160de3f61d14850e817d424&req=cSgnFM14n4BYFb4f3HP0gLIuf6%2BAPxkBUmpDW1v%2F3CSPAZaxu8J6IhAaSdEL%0AHz3SrEIwxfUOtWw4MA%3D%3D%0A)
### Tracking pixel
With your data feed and subject line configured, you need to add the open tracking pixel. Jacquard needs this to optimise the send, and it's just as important as the subject line itself.
You should add this to the HTML body of the email in an ![]()
tag. You can copy the below code for this step. Just ensure you replace every instance of **your_data_feed** with the handlebars alias you actually used.
```plaintext
```
Using our example from above, our tracking pixel code would look like this:
`<img src="{{WeeklyOffers.statistics_url}}" width="1" height="1" alt=""/>`
### Send rate limit
Continue the rest of your campaign setup process as usual until you reach the **Launch** section.
This is where you want to calculate the rate at which your message should be sent. This rate allows Jacquard the time it needs to optimise the subject line.
Jacquard would like as much time as possible to get the best results for your experiment. So the longer you allow, the better your results! Calculate the send rate by picking the number of hours over which you want to deploy your experiment and using that to divide your audience.
For this example, we are going to use 6 hours and an audience of 1,000,000. First, divide your audience of 1,000,000 by 6. Then, divide again by 60 to get your per minute send rate, as in the below:
`1,000,000 / 6 = 166,667`
`166,667 / 60 = 2,778`
Set a send rate limit = 2,778 messages per minute
[](https://downloads.intercomcdn.com/i/o/580248094/1647a41f1d163f3f3b614be6/image.png?expires=1749658500&signature=f3588063463c92e2db381be4910f4fee5117df4de1df34ed540da05104f8a409&req=cSgnFM12nYhbFb4f3HP0gG%2B6tDSONjrnYLs9mTTzM8JNbcXv8h%2FRenRULaD8%0AFSmaByK4fhCwka32OQ%3D%3D%0A)
When you do this calculation for your audience, simply use your audience size and number of hours. You'll still use 60 to determine the per minute rate, as Jacquard's Dynamic Optimisation works best when sends are conducted steadily minute by minute.
Now, schedule your campaign as you normally would. Make sure you take your send time length into consideration when you decide when your campaign should start.