Email campaigns
Create and manage campaigns from the same workspace used for other email workflows.
Maildun
Maildun is an open-source email marketing workspace for campaigns, sequences, and transactional email. It supports self-hosting and includes a beta native Mac builder with an AI assistant and MCP support; a managed platform is listed as coming soon.
Open-source email marketing workspace
Maildun is an open-source email marketing tool for managing campaigns, sequences, and transactional email in one workspace. It is designed for people who want to run the email stack themselves, inspect the code, and contribute to the project rather than rely only on a hosted service.
The product also includes Maildun for Mac, a native email builder currently labeled beta. The app combines visual email design with an AI assistant and MCP support, while a managed Maildun platform is listed as coming soon for users who prefer the service to be operated for them.
Features
Sequences
Organize automated or scheduled email sequences alongside campaign and transactional email work.
Transactional email
Support transactional email as part of the product’s broader email marketing stack.
Mac email builder
Use the native Mac app to design email content with a visual editing workflow, including blocks, preview, and theme settings.
AI design assistant
Get writing and design assistance in the Mac app through its AI assistant, with prompts for release emails, new sections, tone changes, and brand colors.
Open-source and MCP workflow
Use MCP support in the Mac app, while the open-source project can be read and shaped through its public code repository.
Use cases
Self-hosted email operations
Run campaign work on infrastructure you control while keeping the underlying project available for inspection and contribution.
Release and announcement design
Build a release or announcement email in the Mac app, adjust its tone or sections with the assistant, and preview the result before sending it.
Multi-stage email programs
Keep recurring sequences and transactional messages within the same product scope as one-off campaigns instead of treating them as separate tools.
Open-source evaluation and contribution
Evaluate the open-source project, review its code, and participate in shaping the product when an organization wants visibility into the software it operates.
Pros and Cons
Pros
- Combines campaigns, sequences, and transactional email in one stated workspace.
- Supports self-hosting and provides access to the project code through GitHub.
- Includes a native Mac email builder with preview, content blocks, theme colors, an AI assistant, and MCP support.
- Offers a future managed option for users who do not want to operate the platform themselves.
Cons
- The main product and Mac app are presented as beta, so the available site does not establish production readiness or feature completeness.
- The managed platform is not yet available; the pricing page is not present, and the site does not publish plan limits or detailed deployment documentation.
- The site gives limited information about integrations, collaboration controls, and operational requirements.
FAQ
How can Maildun be deployed?
Maildun can be self-hosted, and the project is presented as open source with its code available on GitHub. The site also lists a managed platform as coming soon.
What kinds of email can Maildun handle?
The site describes Maildun as covering campaigns, sequences, and transactional email in one workspace. It does not provide more detailed workflow or delivery documentation on the available pages.
What is Maildun for Mac?
Maildun for Mac is a native email builder in beta. It includes an AI assistant and MCP support, and can be downloaded for free according to the site.
Does Maildun support integrations or team collaboration?
The available site content does not specify integrations beyond MCP support in the Mac app, nor does it document team permissions or collaboration features.
Quick Facts
- Category
- Email marketing
- Deployment
- Self-hosted; managed platform coming soon
- Source model
- Open source
- Desktop app
- Maildun for Mac, beta
- Mac app availability
- Free download
- Core workflows
- Campaigns, sequences, and transactional email
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