Local Email Agents with Ollama

Run open-source LLMs locally with Ollama and connect them to MultiMail for email capabilities — with human oversight as a safety net for local models.


Ollama lets you run open-source LLMs like Llama 3, Mistral, and Qwen locally with an OpenAI-compatible API. MultiMail provides the email infrastructure layer that turns local models into functional email agents capable of sending, receiving, and managing email.

Local LLMs via Ollama may have weaker instruction following than cloud models, making human oversight especially important. MultiMail's default gated_send mode ensures every email drafted by a local model requires human approval before delivery, protecting against lower-quality model outputs.

Connect Ollama to MultiMail using the OpenAI-compatible API with tool calling support. Your data stays local during inference while MultiMail handles the email transport, creating a privacy-friendly architecture for sensitive email workflows.

Built for Ollama developers

Safety Net for Local Models

Local LLMs may produce lower-quality outputs than cloud models. MultiMail's oversight modes are especially critical here — gated_send ensures every email is human-reviewed before delivery, catching issues that local models are more prone to.

Privacy-Friendly Architecture

Your prompts and reasoning stay on your machine with Ollama. Only the final email content is sent through MultiMail's API, creating a hybrid architecture that minimizes data exposure while providing full email capabilities.

OpenAI-Compatible API

Ollama provides an OpenAI-compatible API, so you can use the same tool calling patterns as cloud providers. Define MultiMail email tools once and they work with any local model that supports function calling.

Zero Inference Cost

Running models locally with Ollama means no per-token costs. Combined with MultiMail's free Starter tier (200 emails/month), you can prototype email agents with zero running costs.

Graduated Trust via Oversight Modes

Start with gated_all (human approves every action) for untested local models, then move to gated_send as you validate quality. MultiMail's five oversight modes let you safely experiment with different models.


Try it with your agent

No code, no dashboard. Paste this to your AI agent — it connects MultiMail, creates an inbox, and builds the flow for you.

1. Get MultiMail ready: read https://multimail.dev/llms.txt, connect the MultiMail MCP server to your agent runtime, create a free inbox, and set up a verified sending domain so the agent can receive and send email. 2. Wire it into my Ollama agent using Ollama's real tool-calling support: define callable email tools in the chat request, pass the model's tool calls to the connected MultiMail MCP server, then return the tool results back into the same Ollama conversation. 3. Give the agent exactly these capabilities: check the MultiMail inbox for new messages, draft replies for review, and send or schedule email only through MultiMail's compose/send/schedule capability. 4. Send a test email to the new MultiMail inbox, have the Ollama agent check the inbox, draft a short reply, and prepare it to send back to the verified sender. 5. Run with MultiMail oversight mode set to gated_send: every outbound or scheduled email must pause for my review and explicit approval before anything sends. Do not use monitored or autonomous mode until I ask for it.

Step by step

1

Create a MultiMail Account and API Key

Sign up at multimail.dev, create a mailbox, and generate an API key from your dashboard. Your key will start with mm_live_.

2

Install Ollama and Pull a Model

Install Ollama and download a model with tool calling support like Llama 3.3.

3

Install Python Dependencies

Install the Ollama Python library and requests for calling the MultiMail API.

4

Build the Agent Loop

Define email tools and implement the agent loop using Ollama's chat API with tool calling.

5

Approve Pending Emails

Review and approve pending emails in the MultiMail dashboard. This step is especially important with local models that may produce lower-quality outputs.


Common questions

Which Ollama models support tool calling for email agents?
Llama 3.3, Mistral, and Qwen 2.5 models support tool calling in Ollama. Larger models (70B+) generally produce better email content, but 8B models work for simple triage tasks. Check Ollama's model library for the latest tool-calling support.
Why is oversight more important with local models?
Local models may have weaker instruction following than cloud models like GPT-4 or Claude. They are more likely to generate inappropriate email content or malformed tool calls. MultiMail's gated_send mode catches these issues before emails are delivered.
Does my email data stay private with Ollama?
Your prompts and model reasoning run entirely on your local machine. Only the final email content (to, subject, body) is sent to MultiMail's API for delivery. Inbox reads also go through MultiMail's API, but the model's analysis of that content stays local.
Can I use Ollama's API with the OpenAI Python SDK?
Yes. Ollama exposes an OpenAI-compatible endpoint at localhost:11434/v1. Point the OpenAI Python SDK at this URL and use the same tool calling code you would use with OpenAI's cloud API. This makes it easy to switch between local and cloud models.
Is there rate limiting on the MultiMail API?
Rate limits depend on your plan tier. The Starter (free) plan allows 200 emails per month, while paid plans range from 5,000 to 150,000. Combined with Ollama's zero inference cost, the free tier is a great starting point for local email agents.

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The only agent email with a verifiable sender

Email infrastructure built for AI agents. Verifiable identity, graduated oversight, and a hosted MCP server. Formally verified in Lean 4.