Installation 

Target group: Administrators / Integrators

1. Install the extension: composer require proudnerds/laposta.
2. Coming from 12.x: run the upgrade wizard Migrate "Proudnerds Laposta" plugins to content elements in the Install Tool. It converts the existing content elements from CType=list to their own content types and updates the backend user group permissions.
3. Include the TypoScript template.
4. Add the extension to the relevant backend user groups.
5. Add the Laposta apiKey in the constants settings.
6. Create "Laposta newsletter list" records.
7. Insert the subscribe and unsubscribe plugins on your pages.
8. Select the "Laposta newsletter list" records on each plugin.
9. Set the record storage page to the page that holds the list records.
10. On laposta.nl you can add custom fields per newsletter. The template ships with email (required), voornaam and achternaam.
11. Add or change custom fields in the template by prefixing the field name with customField..
12. A log is kept in var/log/Laposta.log.