MailFlow

What MailFlow is

MailFlow is software for sorting incoming email into IMAP folders and preparing replies in the user’s writing style. It classifies messages using internal or client domains, threads, and keywords, with an LLM fallback. Replies are saved as drafts in the mailbox’s IMAP Drafts folder; MailFlow never sends email automatically. Mailboxes connect through generic IMAP or OAuth2 for Gmail and Microsoft 365. The project lists Ollama, OpenAI, Anthropic, Gemini, vLLM, LM Studio, and OpenAI-compatible endpoints as LLM options. MailFlow supports web, API, and self-hosted use, and its full web, API, and worker stack can run with Docker Compose. The project recommends local Ollama for privacy. Stored IMAP passwords and LLM API keys are encrypted using a Fernet SECRET_KEY; the security file warns that an early development key appeared in Git history and should not be reused for deployments. The README lists English and Spanish support. The managed Free plan costs nothing and allows one mailbox and 100 emails per day. Paid costs $12 a month, with plan limits unstated. Self-hosted instances have no plan limits.

Who it suits

MailFlow suits individuals or teams looking to sort incoming IMAP mail and prepare reply drafts without automatic sending. It may also fit users who want to self-host or choose from several listed LLM options.

Limits

Managed Free allows one mailbox and 100 emails per day. Self-hosted instances have no plan limits. Paid plan limits are unstated.

Getting started

1. Open the MailFlow project at https://github.com/NeoNexAI/MAILFLOW-AI_MAILING.
2. Choose managed web use or a self-hosted deployment.
3. For self-hosting, run the full web, API, and worker stack with Docker Compose.
4. Connect a mailbox through generic IMAP or OAuth2 for Gmail or Microsoft 365.
5. Configure an LLM option such as Ollama, OpenAI, Anthropic, Gemini, vLLM, LM Studio, or an OpenAI-compatible endpoint.
6. Choose Free or Paid for managed use; Free costs nothing and Paid is $12 a month.

Verdict

Choose MailFlow if you want incoming mail classified and reply drafts prepared for review, especially if self-hosting or local Ollama matters to you. Managed Free is capped at one mailbox and 100 emails a day. Look elsewhere if you need the software to send replies automatically.