Use MetaCall FaaS to setup your subscriber function.

Login into to MetaCall FaaS:

https://dashboard.metacall.io

Along with this Mailchimp Example repository and the branch, you simply add the environment variables corresponding to your mailchimp account configuration:

MAILCHIMP_API_USERNAME=authusername

MAILCHIMP_API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-xxxx

MAILCHIMP_TARGET_LIST=xxxxxxxxxx

After deployment you should see something like this.

Now you can start using your new async function as an endpoint using the await route

curl -X POST https://api.metacall.io/<your_alias>/mailchimp-example/v1/await/subscribe -X POST --data '{ "email": "[email protected]" }'

Extra: Use Express in FaaS as webhook endpoint

If you go into mailchimp.js you can see we've instanciated an express server with an endpoint called '/webhook'. This is useful to configure a after-subscription webhook (or any of the like) and perform actions in it.

To do so, you take the url with the port route https://api.metacall.io/<your_alias>/mailchimp-example/v1/port/8080/webhook and place it in Mailchimp's webhook url box.

That's it, Enjoy MetaCall!