CategoriesEmail Marketing

Companies in the category 'Email Marketing'

These are companies that provide open source tools for managing and automating email marketing campaigns.

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Plunk

Open-source email platform for SaaS

Plunk is an open-source email platform that combines transactional emails, marketing campaigns, and workflow automation in a single self-hostable product. Built as an alternative to tools like SendGrid, Resend, and Mailchimp, it offers a visual workflow builder, dynamic audience segmentation, inbound email processing, and detailed analytics. Plunk is licensed under AGPL-3.0, EU-hosted, and GDPR compliant, with pricing at $0.001 per email and no contact limits.

Location: Antwerp, Belgium
Founded: 2022
Industries
Marketing
Technologies
Self-HostedWorkflow Automation
Sectors
Developer
Licenses
AGPL-3.0
Updated: June 6, 2026
1 person
4 headlines
BillionMail

Open-source mail server and marketing

BillionMail provides an open-source email marketing platform that enables businesses to send newsletters, promotional emails, and transactional messages through a self-hosted solution. The platform offers unlimited email sending capabilities, advanced analytics, and DNS configuration guidance to help users achieve high deliverability rates without monthly subscription fees.

Location: Hong Kong, China
Founded: 2025
Industries
Marketing
Technologies
Self-HostedMail Server
Sectors
Enterprise
Licenses
AGPL-3.0
Updated: July 30, 2025
0 people
1 headlines

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