Use Contact Form 7 for your Stager mailing opt-ins form.
Stager is an all-in-one platform for ticketing, marketing and event planning. One of its features is a mailing tool for your customers. There is an API to register users for mailings but no WordPress integration to use this API. Until now!
To use this plugin your organisation needs a Stager envirionment, see Stager for more information.
You need to know your organisations Stager subdomain, eg. dkzr when your Stager domain is https://dkzr.stager.co/ and you need an Access Token. In your Stager Settings you will find the necessary information to configure your form.
All the configuration is done in your forms Additional Settings.
Screenshots
![Default form fields for Stager mailing opt-in: [email] (required), [firstname] and [lastname] (optional).](https://ps.w.org/mailing-opt-in-for-stager-using-cf7/assets/screenshot-1.png?rev=3312976)
Default form fields for Stager mailing opt-in: [email] (required), [firstname] and [lastname] (optional).

Required Additional Settings code snippets examples.

Help is available in the default WordPress help screen.

The contact form in your site with email, first- and last name fields.

After submit, you must check your email.

The email contains a confirmation link to your Stager confirmation page.

On the Stager confirmation page your customers can select the "audiences" they want to be part of.

The final page after your customers save the confirmation form.