--- title: "If you use Zapier: best practices" description: Pro tips for using Zapier's Webhooks to make cool integrations happen --- [Skip to content](https://help.indiegraf.com/if-you-use-zapier-best-practices#main-content) English Show submenu for translations [Publisher Portal](https://portal.indiegraf.com/tickets?hsLang=en) [![Indiegraf-PrimaryLogo-FullColor-1](https://help.indiegraf.com/hs-fs/hubfs/Indiegraf-PrimaryLogo-FullColor-1.png?width=262&height=60&name=Indiegraf-PrimaryLogo-FullColor-1.png)](https://help.indiegraf.com/?hsLang=en) Open main navigation Close main navigation - English Show submenu for translations - [Publisher Portal](https://portal.indiegraf.com/tickets) How can we help you? - There are no suggestions because the search field is empty. 1. [Indiegraf](https://help.indiegraf.com/?hsLang=en) 2. [Hearken](https://help.indiegraf.com/hearken?hsLang=en) 3. [Setting up APIs and webhooks](https://help.indiegraf.com/hearken?hsLang=en#setting-up-apis-and-webhooks) March 5, 2026 # If you use Zapier: best practices ## Pro tips for using Zapier's Webhooks to make cool integrations happen If you are looking for a low development effort way to integrate EMS into your systems, we recommend [Zapier](https://zapier.com/) as the intermediary layer. *Please note: This does not imply any official partnership with Zapier.* Here are some of the Zapier best practices when using EMS webhooks and APIs   #### **1. Raw Hooks can better than a parsed one, if you know how to use them** When you set up a zap to receive a webhook and feel comfortable using Zapier's code blocks, consider using the `Catch a raw hook` option. This will prevent Zapier from flattening any arrays that are nested. eg: Opt-in lists in audience member webhook. The `rawBody` can then be parsed into JSON using a code block. let output = JSON.parse(inputData.rawBody)   #### **2. Iterating over a list** If an audience member is opted-in to 3 opt-in lists, you might want a zap to add them to 3 mailing lists. Most CRMs and email platforms we have encountered do not accept multiple list ids. So there is a need to be able to run steps of a zap for each object in the list. But Zapier does not provide a direct way to iterate over a list of objects. Zapier, however, allows zaps to easily make HTTP calls including to the receiving hook of a different zap. You can use this feature to simulate a loop as described above. This set up involves setting up two zaps: an `iterator` and a `data processor`. The iterator zap loops through the list in a code block and call the data processor zap to process each member of the list. #### Example: Iterating over an array of opt-in lists `// The data processor Zap catch hook url` `const otherZapUrl = '{REPLACE THIS WITH YOUR PROCESSOR WEBHOOK URL}'` `​` `// Parse raw hook as describe in step 1` `let body = JSON.parse(inputData.rawBody);` `​` `let optInLists = body.payload.opt_in_lists;` `​` `// construct the body of the new request in any format you want` `// Here it is being rebuilt with the email added to every list` `optInLists.map(list => {` `  list.email = body.payload.email` `  fetch(otherZapUrl, {method: 'POST', body: JSON.stringify(list)})` `    .then(() => {` `    callback(null, [{status: 'ok'}]);` `  });` `});` - [Welcome to Indiegraf](https://help.indiegraf.com/welcome-to-indiegraf?hsLang=en) - [Onboarding](https://help.indiegraf.com/onboarding?hsLang=en#main-content) - [Quick Start Guide](https://help.indiegraf.com/onboarding?hsLang=en#quick-start-guide) - 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