Keila is an open-source newsletter tool designed for easy and reliable email newsletter creation and management.

Features:

• Email Creation Flexibility: Keila provides multiple ways to create emails, including an easy-to-use visual Block Editor, the ability to write newsletters with Markdown, support for building emails with MJML for full design flexibility, and the option to send plain text emails.

• Template Reliability: It uses rock-solid base templates to ensure newsletters look great across various devices and email clients like Gmail, Outlook, and Thunderbird.

• Contact List Management: Keila allows users to manage and grow their contact lists. It also offers a Form Builder to create customizable sign-up forms with additional fields like checkboxes, text fields, and dropdowns.

• Bot Protection: To maintain the quality of contact lists, Keila enables users to protect forms with a captcha check and verify new sign-ups with double-opt-in.

• Personalization: You can personalize emails using custom data fields from sign-up forms or external sources (like CMS or CRM systems) with Liquid templates. Each contact and campaign's custom data is represented as a JSON object.

• Segmentation: Keila allows for targeting emails with segments by creating subsets of mailing lists based on contact data like language preferences or tags, offering both a visual editor and a powerful segment language.

• Analytics and Privacy: Keila provides email analytics to gain insights into campaigns while respecting user privacy. Users also have the option to turn off tracking entirely for more privacy-conscious campaigns.

• Extensibility: Keila offers a comprehensive API for managing contacts and campaigns, enabling integrations with existing tools and automation of email marketing workflows. A Zapier integration is currently in private beta for a no-code/low-code option.

• Open Source and No Vendor Lock-in: Keila is 100% Open Source with no proprietary premium features, giving users full control of their data. It is licensed under AGPL.

• Self-Hosting and Managed Options: Users can self-host Keila using the official Docker image or use the managed Keila Cloud service hosted in the EU (Germany and France), ensuring strict European privacy standards. There's also a fully managed "Send with Keila" option.

• Bring Your Own Email: Keila supports using your own email service provider via SMTP, AWS SES, Mailgun, Postmark, and Sendgrid.

• Support: Keila emphasizes providing awesome support to help users with various aspects of sending newsletters.

• Form Protection: It offers form protection with hCaptcha and Friendly Captcha.

• Import and Export: Keila supports CSV import & export of data.

• Recent Updates: Recent updates include improved previews for desktop and mobile, external IDs for contacts to synchronize with external systems, and availability in French. It also added MJML support, filtering and sorting of contacts, and custom signup fields in the past.

Keila aims to be a true open-source alternative to proprietary email marketing tools.