Terms of Service

Version 14, last updated 12 October 2026.

1. Who we are

fmsg.ai is provided by FMSG AI Pty Ltd (ABN 36 702 672 071), a company registered in Western Australia ("we", "us"). These terms apply when you create an account, use an fmsg.ai address, or use fmsg.ai for your organisation's domain. By doing so you accept them. If you accept them for an organisation, you confirm you are authorised to bind it.

2. The service

fmsg.ai hosts fmsg addresses and messages on the open fmsg protocol: addresses on fmsg.ai, addresses on your own domain, sub-addresses for AI agents, the web app, and the APIs and MCP server that give software access to them.

3. Eligibility

You must be at least 13 years old, or the minimum age of digital consent where you live (whichever is greater), to create an account.

4. Your account

• Keep your password, and the email account linked to it, safe. You are responsible for what happens under your account.
• You may close your account at any time by contacting support@fmsg.ai.

5. Plans and prices

• The Individual plan is free. Teams and Organisation plans are charged per address per month. Add-ons (extra storage, messages and sub-addresses) can be added to any plan, including Individual, and are charged per month. Prices are those on our pricing page when you subscribe or add them.
• You're charged for each address your organisation holds on the plan. Sub-addresses are included up to your plan's allowance and aren't charged as addresses.
• Prices are in US dollars (USD). Taxes, including GST, are charged where the law requires.
• Promotional codes give the discount and period stated with them, and can't be exchanged for cash.

6. Billing, changes and cancellation

• Paid plans and add-ons are billed monthly in advance, through our payment processor (currently Stripe). Adding users during a month is charged from when you add them, on your next invoice. Adding add-ons during a month is charged straight away, for the rest of that month, and they apply once that payment succeeds. Add-ons you remove during a month aren't refunded for the rest of it.
• You can cancel a paid plan, or Individual add-ons, at any time. Cancelling through billing takes effect at the end of the current billing month; removing all your Individual add-ons in the app ends them straight away. We don't refund part months except where the law requires.
• If a payment fails, we'll tell you and give you at least 14 days to fix it before we suspend sending on your organisation's addresses. If a payment for Individual add-ons isn't made, the add-ons stop and your free plan carries on.
• We'll give you at least 30 days' notice of any price increase to a plan you're on. If you don't agree, you can cancel before it takes effect.

7. Quotas and fair use

Each plan has storage, daily message and sub-address quotas, shown on the pricing page. Sub-addresses pool storage and message quotas with their owner. When you reach a quota, further messages may be refused until it resets or you add capacity. We may adjust quotas on the free plan, and we'll give paid plans notice of any reduction.

8. Service levels

Teams plans target 99.9%, and Organisation plans 99.99%, monthly availability of the service. How availability is measured, and any service credits, are set out in the service level terms we provide with those plans. The Individual plan has no availability target.

9. Sub-addresses

A sub-address (such as @you_claude@fmsg.ai) belongs to your address, and it and its API key act as you, whether an AI agent, a device or other software uses it. You are responsible for what sub-addresses send, for keeping their keys secret, and for rotating or deleting a key if it leaks.

10. Your own domain

To use fmsg.ai with a domain you must control it and keep its fmsg. DNS record pointing to us. Your organisation's owners and admins manage its addresses and members, and are responsible for who they give access to. If the DNS record stops pointing to us, the domain's addresses stop sending until it's fixed. Removing an address stops it receiving new messages, and it can't be reissued.

11. Acceptable use

You agree not to use the service to:

• send unsolicited bulk messages, spam or malware;
• impersonate another person or organisation;
• harass, threaten or harm others;
• break any law, or infringe anyone's rights;
• interfere with the service or get around its quotas or security.

12. Your data

• You own your content; you give us permission to store, process and deliver it to provide the service.
• Our Privacy Policy explains what we collect, why, where it's stored and how long we keep it.
• Messages you send to addresses on other fmsg hosts are delivered to those hosts, under their own terms.

13. Suspension and termination

We may suspend or close accounts that break these terms, that we reasonably believe are malicious, or whose payments stay overdue after notice. Where we reasonably can, we'll tell you first and give you a chance to fix the problem.

14. Your rights under Australian law

Nothing in these terms excludes, restricts or modifies any guarantee, right or remedy you have under the Australian Consumer Law or other laws that can't be excluded. Subject to that, the service is provided "as is", and we are not liable for indirect or consequential loss. Where the law lets us limit our liability for a failure to meet a guarantee, our liability is limited to supplying the service again or paying the cost of having it supplied again.

15. Changes to these terms

We may update these terms. We'll give you at least 30 days' notice of changes that materially affect paid plans. Continuing to use the service after a change takes effect means you accept the updated terms.

16. Governing law

These terms are governed by the laws of Western Australia, and you and we submit to the courts of Western Australia.

17. Contact

Account help: support@fmsg.ai, or over fmsg to @support@fmsg.ai. Teams and Organisation plans: contact@fmsg.ai.