Use a third-party CSS or JS Framework, a self-hosted service like a CRM, or a third-party service with the site.
Features This module provides API integration with LInkedIn API service.
Introduction
Module based on the Privatemsg module for Drupal 7.
The module allows to integrate a newsletter registration form with Mail-In-One.
This module utilises Courier module API and allows admin users to edit site-wide message templates and send templated messages to site
This module provides a Drupal Commerce 2.x payment plugin for BTCPay Server. It allows you to accept Bitcoin on-chain and over Lightning Network (and other cryptocurrencies) without a 3rd party intermediary by becoming your own payment processor.