Brevo is an email service from France with an SMTP relay and API for transactional email delivery, but also with a focus on newsletter emails which can be designed and sent directly from the application. Brevo is generally well rated and also offers SMS sending.

rapidmail is a German email marketing service and transactional mail service. The service is hosted in Germany. The service offers a easy-to-use drag-and-drop editor with many great templates to create the emails. rapidmail has many certifications, which should guarantee high delivery rate of emails.

Clever Elements is a German email marketing service. They offer a user friendly editor to design the emails for the campaigns and analytics features.

Friendly Automate is an email marketing and automation service from Switzerland. It lets you send emails based on automation workflows and create email templates in a powerful and easy-to-use editor. The service is based on the feature-rich open-source software Mautic, which the company supports and is also listed as a partner.

Keila is an open source email marketing tool, available for self-hosting and with a managed service.

GetResponse is an email marketing service from Poland, it offers a suite of tools to engage and build a relationship with your customers.

Acumbamail is an email marketing service from Spain. They offer many templates to easily create emails for a newsletter and many integrations for platforms like WordPress, Magento, WooCommerce, PrestaShop and many more.

CleverReach is a German email marketing service. The service offers a simple to use email editor. The servers are hosted in the EU.

MailUp is an email service from Italy. They offer unlimited emails in all plans. The more expensive plans also offer a transactional email service called SMTP+.