@syndikalista We use Mautic for that extensively. It's far more powerful than Mailchimp. Here's how we run our own: https://tech.oeru.org/installing-mautic-php7-fpm-docker-nginx-and-mariadb-ubuntu-1604 but you can also use Mautic's hosted service.
@lightweight thank you, this looks promissing. you know if mautic can form input by a field (like a postal zip code)?
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