Missive is a well-regarded team email client. It runs on top of your real inbox — Gmail, Outlook, or any IMAP account — and adds shared inboxes, internal comments, and recently, AI-powered rules that can act on messages automatically.
At first glance, the AI Rules feature makes Missive look like a direct competitor to Majordomo. Both can read incoming emails and take automated actions. But they're designed around fundamentally different assumptions about what email is for and who should be in the loop.
What Missive Does
Missive is a collaboration layer on top of your existing inbox. Teams share inboxes, assign conversations, leave internal notes, and discuss emails in a sidebar — without the mess of CC chains and forwarded threads. It supports Gmail, Outlook, IMAP, and several non-email channels (SMS, WhatsApp, Instagram).
The AI capabilities, added recently under the name AI Rules, let users configure condition-based logic that uses an LLM to evaluate incoming messages. The AI can detect sentiment, classify request types, or extract information that keyword rules can't capture. What it does with that classification is up to you: route to a team member, apply a label, trigger a canned response.
A few important details about how Missive's AI works in practice:
- Plan requirement — AI Rules require the Productive plan ($24/user/month) or above; the Starter plan ($14/user/month) does not include them
- AI provider setup — Missive supports Missive AI credits or bring-your-own OpenAI, Anthropic Claude, or Google Gemini keys. Missive AI credits include a provider-price markup; BYO keys are billed separately by the provider
- Human in the loop — Missive's model assumes humans are reviewing and sending; automated sending is an edge case, not the default
- Per-seat pricing — a 5-person team on the Productive plan pays $120/month before AI credits or separate provider costs
What Missive does exceptionally well is helping teams collaborate on shared inboxes — the notes, assignment, and routing features are polished and genuinely useful for customer-facing teams that need coordination.
What Majordomo Does
Majordomo is not a team inbox. There is no comment sidebar, no assignment workflow, no read-receipt tracking. It's an autonomous AI agent that connects to a mailbox and handles email without a human in the loop.
The design assumption is the opposite of Missive's: the goal is that the agent handles the email entirely, not that it surfaces information to help a human handle it faster.
- Fully autonomous — reads, decides, and sends by default; no approval workflow unless configured
- LLM included — the agent runs on managed LLM infrastructure; you don't wire up your own API key
- Per-mailbox pricing — $9.99/month with 500 replies included; no per-seat counting
- IMAP/SMTP native — works with any standards-compliant inbox, not just major cloud providers
- Thread history reconstruction — follows References and In-Reply-To headers across inbox and sent folders to build full context before replying
- Built-in escalation logic — pre-configured safety triggers (legal threats, sensitive complaints, prompt-injection attempts) hand off to a human when warranted
- EU-hosted, GDPR compliant — email content is processed in memory and not persisted; DPAs available
The AI Provider Setup Gap
Missive gives teams two ways to power AI: Missive AI credits or their own provider keys. That flexibility is useful, but it also means AI spend is still a separate configuration and cost surface. With credits, Missive documents a provider-price markup. With BYO keys, teams manage provider accounts, API credentials, and token costs separately from the Missive subscription.
Majordomo's LLM infrastructure is included. You configure the agent — persona, rules, escalation triggers — and it runs. There's no separate AI provider account to manage and no per-token billing to project.
When Collaboration Is the Point
The strongest argument for Missive is that some email genuinely requires human coordination. A shared support inbox where two agents might accidentally reply to the same thread, or a sales inbox where account context needs to be visible to the whole team — Missive's assignment and comment system handles that well.
Majordomo's model assumes the AI is the team for that inbox. If you're running a mailbox that currently requires one human to handle, Majordomo replaces that function. If you're running a mailbox that requires five humans to coordinate, you need collaboration tooling first — and Missive is a strong option for that.
The question is whether you want AI to assist your team or to replace the routine portion of the work entirely.
Side-by-Side
| Missive | Majordomo | |
|---|---|---|
| What it is | Collaborative team inbox with AI Rules | Autonomous AI email agent |
| Price | $14–$36/user/month | $9.99/month |
| LLM included | Missive AI credits or BYO API key | Yes |
| Sends autonomously | No — humans review and send | Yes, by default |
| Email provider support | Gmail, Outlook, IMAP | Any IMAP/SMTP provider |
| Thread history reconstruction | Displays thread; no pre-reply context building | Yes — inbox + sent folder before each reply |
| Team collaboration features | Yes — comments, assignment, shared inboxes | No |
| Built-in escalation logic | Manual rule configuration | Yes — pre-configured safety triggers |
| EU-hosted / GDPR | Not documented | Yes |
Which One Should You Use?
Use Missive if:
- Multiple people need to coordinate on the same inbox without stepping on each other
- You want AI to surface information and classify emails, but a human sends every reply
- You need channels beyond email — SMS, WhatsApp, Instagram — in a single interface
- You're comfortable managing AI credits or your own OpenAI, Anthropic, or Google Gemini provider setup
Use Majordomo if:
- You want the AI to handle email end-to-end — not assist a human handling it
- You're managing a mailbox solo or with a small team and the bottleneck is volume, not coordination
- You don't want AI provider setup or variable token/credit costs as a separate concern
- GDPR compliance and EU data hosting are requirements
- You're running multiple client inboxes and per-seat pricing doesn't work for you
Missive makes teams more efficient at handling email together. Majordomo makes most email not require a team at all. Both are good answers — to different problems.
Majordomo is $9.99/month. LLM included. 500 AI replies. No per-seat counting, no AI provider setup.
Try Majordomo