Terms of Service
These terms govern your use of the Avelto API, dashboard and SDK. They are written for businesses, not consumers.
Last updated 24 September 2026
1. Who these terms are between
These terms are between you, the business that opens the account, and Avelto, a service operated from the United Kingdom. By creating an account, calling the API or signing in to the dashboard, you accept them.
Avelto is operated by the business trading as Avelto, established in the United Kingdom. Registered business details are available on request from [email protected], and will be published on this page once the entity is confirmed.
If you accept these terms for an organisation, you confirm that you are authorised to bind that organisation. In these terms, “you” then means that organisation.
2. Who may use the service
The service is sold for business and professional use. It is not a consumer product and it is not directed at children.
- You must be 18 or over to open an account or to use an account on behalf of a business.
- We do not knowingly accept accounts from people under 18. If we learn that an account holder is under 18, we close the account and delete its data.
- You must not use the service in breach of UK sanctions or of any export control that applies to you.
3. Your account and your API keys
You sign in with a link we email you. You may also add a password or a passkey from your settings. If you do, you are responsible for keeping them private and for the people you let use them; a passkey on a shared device is a key to your account. Every sign-in method can be removed again from your settings, and the emailed link keeps working whatever you add.
You are responsible for everything sent with your API keys. A key is shown once when you create it and we store only its hash, so we cannot recover it for you. Keep keys out of client-side code and out of public repositories.
- Keep your account email address current, because it is how we reach you about billing, suspension and security.
- Revoke a key from the dashboard as soon as you think it has leaked. Revocation takes effect on the next request.
- Tell us promptly at [email protected] if you believe your account or a key has been compromised.
- Live and test keys are separate. A test key cannot deliver mail, so treat only live keys as sending credentials.
4. Acceptable use
Our Acceptable Use Policy forms part of these terms and is incorporated by reference. Breaking it is a breach of this agreement.
Our sending reputation is shared by every customer on the platform. Rules that look strict exist so that one sender cannot damage delivery for everyone else.
5. Plans, billing and overage
Prices, included volumes and overage rates are set out on the pricing page. All prices are in pounds sterling and exclude VAT, which is added where it applies.
- Paid plans are billed monthly. Included volume resets on the first day of each calendar month, measured in UTC.
- Sending above your included volume on a paid plan is charged at that plan's rate per additional 1,000 emails, billed at the end of the month.
- The Free plan has no overage. Sending stops when the included volume is used up, until the next month begins.
- Test-mode sends are free. They never count towards your included volume and never generate overage.
- Fees already paid are not refundable, except where the law requires a refund.
Payment is by card, taken by our payment processor on the day you start a paid plan and on the same day each month after that. Your card details are entered into the processor's own fields on our billing page and are held by the processor; we never see or store the number. Changing plan takes effect at once and the difference for the rest of the month is charged or credited then. Moving to the Free plan ends the paid plan when the month you have paid for closes.
If a payment fails, the processor retries the card over the following days and we tell you by email. You can add a new card on the billing page at any time, and it is charged straight away. If the payment still cannot be taken, the account moves to the Free plan and its limits until it is settled.
We may change prices on at least 30 days' notice by email. A change takes effect at your next billing date after that notice period, and you may cancel before then.
6. Suspension and termination
You may stop using the service at any time and delete your account from the dashboard. Deleting the account removes its emails, domains, keys, webhook endpoints and suppression entries, and releases your domains from our sending provider.
We may pause or suspend sending on an account immediately, without prior notice, where:
- the account breaches the Acceptable Use Policy;
- the account crosses the daily bounce or complaint thresholds published in that policy, in which case the pause is automatic;
- we are required to suspend by law or by our upstream sending provider; or
- the account puts delivery, security or the reputation of the platform at risk.
We tell you when we pause or suspend an account and why: the reason is shown at the top of your dashboard, with a way to write to us. Where the cause can be fixed, we lift the pause once it is fixed. We may terminate an account for a material breach that is not remedied within 14 days of us asking, and for repeated breaches without further notice. We may also close a Free account that has been unused for 12 months, after telling you first.
On termination your right to use the service ends and any unpaid fees for the period before termination remain due. Your data is then deleted as described in our privacy policy.
7. Service availability
The service is provided as is and as available. We do not promise an uptime level, a delivery rate or a delivery time, except where an Enterprise contract signed with you states one. Email delivery depends on receiving mail servers that we do not control.
We may change, add or remove features. Where a change removes something you rely on, we give reasonable notice through the changelog or by email.
8. Your data and ours
You keep ownership of the content you send through the service and of the recipient data inside it. We process that data on your instructions under our data processing agreement, which forms part of these terms.
We keep ownership of the service, its software, its documentation and our brand. Nothing here transfers those to you. You may use the SDK and the documentation as needed to use the service.
9. Limitation of liability
Nothing in these terms excludes or limits liability that cannot lawfully be excluded or limited. That includes liability for death or personal injury caused by negligence, liability for fraud or fraudulent misrepresentation, and any other liability the law does not allow us to exclude.
Subject to the paragraph above:
- our total liability arising out of or in connection with this agreement is limited to the fees you paid us in the 12 months before the event giving rise to the claim;
- we are not liable for loss of profit, loss of revenue, loss of business, loss of goodwill, loss of anticipated savings, or for any indirect or consequential loss; and
- we are not liable for loss or corruption of data to the extent it results from your own systems, your own instructions or your own failure to keep records.
You are responsible for claims brought against us that arise from your use of the service in breach of these terms or of the Acceptable Use Policy, including claims brought by your recipients.
10. Changes to these terms
We may update these terms. For a material change we give at least 30 days' notice by email to your account address and update the date at the top of this page. Minor changes, such as clearer wording, take effect when they are published.
If you keep using the service after a change takes effect, you accept the updated terms. If you do not accept them, cancel before the change takes effect.
11. General
If a clause is found to be unenforceable, the rest of these terms still apply. A delay in enforcing a right is not a waiver of it. You may not transfer this agreement without our written consent. We may transfer it as part of a sale or reorganisation of the business, on notice to you.
A person who is not a party to this agreement has no right to enforce any of its terms under the Contracts (Rights of Third Parties) Act 1999.
12. Governing law
These terms, and any dispute arising from them, are governed by the law of England and Wales. The courts of England and Wales have exclusive jurisdiction.
13. Contact
Questions about these terms go to [email protected]. Abuse reports go to [email protected], security reports to [email protected], and privacy questions to [email protected].