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Become a sponsor to Marcel Pfingstgräf

@mcpdev80

Marcel Pfingstgräf

mcpdev80
Germany

I build and maintain MailFlow, an independent, privacy-focused open-source AI email project.

MailFlow is designed for people who want more control over their email workflows, with a strong focus on self-hosting, local and hosted LLM support, multi-user environments, security, automation, and practical day-to-day usability.

I develop MailFlow independently in my spare time. Sponsorship helps support continued development, testing, CI infrastructure, compatibility work across different LLMs and providers, security improvements, documentation, localization, and the infrastructure needed to keep the project moving forward.

MailFlow remains open source under the AGPL-3.0 license regardless of sponsorship.

Sponsorship is voluntary support for the project. It does not create a support contract, SLA, guaranteed feature delivery, priority bug fixing, proprietary licensing rights, or ownership in the project.

If MailFlow saves you time, helps your workflow, or your organization benefits from it, your support helps make continued independent development possible.

Thank you for supporting independent open-source software.

Featured work

  1. mcpdev80/MAILFLOW-AI_MAILING

    Open source AI email assistant — Use any LLM, self-hostable, AGPL

    Python

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$ one time

You'll receive any rewards listed in the $10 one-time tier. Additionally, a Public Sponsor achievement will be added to your profile.

$10 one time

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Support the continued independent development of MailFlow with a one-time contribution.

Your support helps with testing, documentation, security improvements, compatibility work, and project infrastructure.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.

$25 one time

Select

Make a one-time contribution to support the ongoing development and maintenance of MailFlow.

Your sponsorship helps fund development, testing, documentation, localization, security work, and compatibility testing.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.

$50 one time

Select

Make a significant one-time contribution to the independent development of MailFlow.

Your support helps sustain development time, testing infrastructure, security improvements, documentation, and project infrastructure.

Optional public recognition as a project supporter.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.

$100 one time

Select

Make a substantial one-time contribution to support the independent development of MailFlow.

Your support helps fund development time, testing infrastructure, security improvements, documentation, localization, and compatibility work.

Optional public recognition as a major project supporter.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.

$250 one time

Select

Provide major one-time support for the continued independent development of MailFlow.

Your contribution helps sustain development, testing, infrastructure, security work, documentation, and long-term project maintenance.

Optional prominent public recognition as a project patron.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.

$500 one time

Select

Make an exceptional one-time contribution to the independent development and long-term sustainability of MailFlow.

Your support helps fund development time, infrastructure, testing, security improvements, documentation, and compatibility work.

Optional prominent recognition as a major project patron.

No support contract, SLA, feature guarantee, roadmap priority, consulting, or other service is included.