Short answer: in November 2026 a paid AI email assistant costs between $12 and $50 per user per month, and most land between $15 and $25. Superhuman's Email Assistant is the cheapest paid option at $12 a month billed yearly. Jace costs $20 a month billed yearly or $25 monthly. Fyxer Pro costs $37 billed yearly or $49 monthly. Gemini in Gmail and Copilot in Outlook come bundled with Google and Microsoft plans, so their real price depends on what your company already pays. Free plans exist (Fyxer, Shortwave), but none of them drafts replies for you automatically.
All prices below were taken from each vendor's own pricing page on 9 November 2026 and are in US dollars, before tax. We make Jace, so we have tried to keep the table plain and let the numbers speak. Check the linked pages before you buy, because prices in this category change every few months.
AI email assistant prices compared (9 November 2026)
| Tool | Free option | Entry paid plan, billed yearly | Same plan, billed monthly | What the entry plan includes |
|---|---|---|---|---|
| Jace | 7-day free trial | $20 per user per month (Plus) | $25 | 10,000 credits a month, up to 2 inboxes, auto-drafts, labels, follow-up drafts, Flows |
| Superhuman | Free plan (Email Assistant is in Pro) | $12 per member per month (Pro) | $15 | Email Assistant inside Gmail or Outlook: auto labels, auto drafts, reminders, auto archive |
| Fyxer | Free plan | $37 per person per month (Pro) | $49 | Drafts in your tone, inbox sorting, meeting notes |
| Shortwave | Free plan | Not checked | $18 per seat (Pro, individual) | Shortwave's AI email app for Gmail. Business plans start at $30 per seat |
| Gemini in Gmail | No separate free tier | Included in Google Workspace Business Starter, $7 per user per month (listed at $3.50 for the first 3 months from 23 November 2026) | Varies by plan | "Help me write", summaries and suggested replies in Gmail |
| Copilot in Outlook | No | Microsoft 365 Copilot Business, from $18 per user per month on top of a Microsoft 365 plan | $25.20 | Draft with Copilot and thread summaries in Outlook |
| Lindy | $50 in free credits to start | Not listed separately | From $49.99 a month for 5,000 credits | A general AI agent that can work on email, meetings and other tasks |
| Gmelius | 7-day free trial | $19 per user per month (Meli) | $21 | AI assistant for Gmail and Google Workspace |
| SaneBox | 7-day free trial | $4.54 a month (Snack, billed every 2 years) | Higher monthly rate | Sorting only, no drafting |
Sources are listed at the end of this page. "Billed yearly" is the per-month price you pay when you buy a year up front.
Why prices range from $12 to $50 a month
The price follows how much AI work the tool does for you each month. A tool that only sorts mail is cheap to run: SaneBox starts under $5 a month because it files messages and writes nothing. A tool that reads every new email and writes a reply draft calls a large language model many times a day. That is why drafting assistants start around $12 and climb to $50 for heavy users.
Three things decide where a tool lands:
- Automatic drafting. Free plans almost never include it. Fyxer's Free plan leaves out automatic drafting, and Shortwave's free tier has a limited AI quota.
- Usage limits. Jace, Fyxer and Lindy meter AI work in credits. Jace Plus includes 10,000 credits a month and Pro starts at 20,000. A busy inbox with auto-drafts on uses more.
- Extra products in the bundle. Fyxer adds a meeting notetaker. Superhuman's Business plan adds its full email app. Microsoft and Google charge for a whole office suite, and email AI is one part of it.
What Jace costs, in detail
Jace has two plans, and every new account starts with a 7-day free trial.
- Plus: $25 per user per month, or $20 a month billed yearly ($240 a year). 10,000 credits a month and up to 2 connected inboxes.
- Pro: $50 per user per month, or $40 a month billed yearly ($480 a year). Starts at 20,000 credits a month, with larger credit tiers, and up to 8 inboxes.
Credits pay for drafts, chat, thread summaries and Flows. Sorting mail into labels does not use credits on its own. When credits run out, auto-drafts and chat pause until the next monthly refill. Jace does not charge you automatically for going over (how credits work). On a team, every seat's credits go into one shared pool. Full plan details are on the Jace pricing page.
For the price, Jace writes drafts into your own Gmail or Outlook Drafts folder and sorts mail into labels such as Needs Reply and Waiting. When a thread you sent gets no reply for 3 days, it prepares a follow-up draft. Auto-send is off by default. See Jace for Gmail and Jace for Outlook for what each provider supports.
Is a bundled assistant cheaper than a separate one?
Gemini in Gmail and Copilot in Outlook look free if your company already pays for them. Google lists "Gemini AI assistant in Gmail" in Workspace Business Starter at $7 per user per month. Personal Gmail users get Gemini in Gmail with Google AI Plus at $9.99 a month. Microsoft sells Microsoft 365 Copilot Business from $18 per user per month billed yearly, on top of a Microsoft 365 plan.
The difference is how they work. Both draft when you ask, inside the compose window. They don't label your inbox and write drafts in the background for every email that needs a reply. If you want that, a separate assistant is what you pay for. Our comparisons of Jace and Gemini in Gmail and Jace and Copilot in Outlook go through the details.
Which price tier fits which person
Under $15 a month: Superhuman's Email Assistant ($12 yearly, $15 monthly) if you want labels and drafts inside Gmail or Outlook at the lowest price. It has no option to send for you.
$15 to $25 a month: Jace Plus, Gmelius Meli or Shortwave Pro. Jace fits people who answer their own client email on Outlook or Gmail, such as lawyers and consultants. It adds Flows and integrations like Slack and HubSpot. Gmelius fits Google Workspace teams. Shortwave fits people happy to move to a new Gmail app.
$35 to $50 a month: Fyxer Pro if you also want meeting notes, or Jace Pro if you connect several inboxes or use a lot of drafts. Lindy fits people who want one agent for email and many other jobs.
Already paying Google or Microsoft: try Gemini or Copilot first. Add a separate assistant only if you still write most replies from scratch.
For features and approval controls side by side, read the best AI email assistants in 2026.
FAQ
How much does an AI email assistant cost per month? Between $12 and $50 per user per month for a paid plan in November 2026. Superhuman Pro is $12 billed yearly, Jace Plus is $20 billed yearly or $25 monthly, and Fyxer Pro is $37 billed yearly or $49 monthly.
Is there a free AI email assistant? Fyxer and Shortwave have free plans, and Gemini in Gmail is included with some Google plans. Free plans limit AI usage and leave out automatic drafting. Jace has a 7-day free trial and no free plan.
How much does Jace AI cost? Jace Plus is $25 per user per month, or $20 a month billed yearly, with 10,000 credits and 2 inboxes. Jace Pro is $50 per user per month, or $40 billed yearly, with 20,000 credits or more and 8 inboxes. Both start with a 7-day free trial.
Is Copilot in Outlook included in Microsoft 365? Business users need a Microsoft 365 Copilot licence. Microsoft lists Microsoft 365 Copilot Business from $18 per user per month billed yearly, or $25.20 billed monthly, added to a Microsoft 365 plan.
Is Gemini in Gmail free? Gemini in Gmail is included in Google Workspace business plans, starting with Business Starter at $7 per user per month. Personal accounts get it with a Google AI plan, such as Google AI Plus at $9.99 a month.
Why do some AI email assistants charge in credits? Each draft or summary costs the vendor model time, and long threads with attachments cost more than short ones. Credits let a light user and a heavy user pay different amounts on the same plan. Jace, Fyxer and Lindy use credits.
Try Jace on your own inbox
The 7-day trial drafts replies for your Needs Reply mail, with auto-send off. Use it to see how many drafts a normal week needs before you pick a plan. Start your free Jace trial, or compare Jace's plans first.
Sources (checked 9 November 2026)
- Jace: pricing, credits
- Superhuman: plans, Email Assistant
- Fyxer: pricing
- Shortwave: pricing (Individual and Business tabs)
- Google: Google Workspace pricing, Google One plans
- Microsoft: Microsoft 365 Copilot pricing
- Lindy: pricing
- Gmelius: pricing
- SaneBox: pricing
