Terms of Service

Last updated: October 3, 2026

These Terms of Service govern the AcelleMail products and services sold directly from this website by Guardian Holdings HK Limited (Hong Kong): the AcelleMail application license, support subscriptions, AI credits, premium plugins, and custom development services. We are the sole supplier, payment counterparty, and support contact for all of them.

Quick links: Supplier · Software license · What the Service is · Pricing & billing · Refunds · Acceptable use · Data & privacy · Warranties · Termination & changes · Complaints & disputes

Who you are buying from

Our products and services are supplied by Guardian Holdings HK Limited ("we", "us", "the Supplier"), a company registered in Hong Kong, registration number 52219621, registered office Billion Trade Centre, 31 Hong To Road, Ngau Tau Kok, Kowloon, Hong Kong. The AcelleMail software is licensed to us by BASIC TECHNOLOGY SOFTWARE. Support contact: [email protected].

Software license: Regular and Extended

Each AcelleMail license bought from this website gives you a perpetual, non-exclusive, worldwide right to install and use the AcelleMail application, in one of two editions: Regular or Extended. Both editions contain the same software and the full source code. The only difference is whether your end users may be charged.

Under one license	Regular	Extended
All features and full source code	Yes	Yes
Production installations	1	1
Use for yourself or for one client	Yes	Yes
Charge end users for access	No	Yes

What one license covers

One production installation: one live copy of AcelleMail serving one product on one primary domain.
Staging, test, development and backup copies of that same installation, as long as they are not open to end users. These do not need a separate license.
Use for yourself or for one client. You may build an installation for a client and hand it over for any fee; the license then passes to that client and you may no longer use it.
Modifying the source code and combining it with your own code. The modified software stays under this license.

Each additional production installation, such as another domain, another brand or another client, needs its own license.

Regular or Extended

Regular: your end users are not charged. You may use AcelleMail to send your own organisation’s email, or run it for one client, as long as nobody pays a fee to access it, either directly or through a subscription, membership or service fee that includes access. Charging a client to build or set up the installation is allowed.

Extended: your end users may be charged. You may run AcelleMail as a paid service and sell accounts, subscription plans or sending quotas to your own customers, using its built-in multi-tenant and billing features. Extended still covers one production installation, and all of your customers use that installation.

Extended does not let you give each customer their own copy of AcelleMail. A separate installation per customer, whether a hosted instance, a one-click install or a white-label copy the customer runs, is an additional installation and needs its own license.

Not allowed under either edition

Redistributing the AcelleMail application or its source code, original or modified, for others to install, for example as a downloadable script, a template or a marketplace listing. Handing a single installation over to a client, as described above, is allowed.
Sharing your license code, or using one license code to activate more than one production installation.

A Regular license can be upgraded to Extended from your dashboard, and you must upgrade before you start charging end users. The upgrade price is shown before you pay.

The license does not expire. Each purchase includes 6 months of software updates and 6 months of technical support, both counted from the date your license is delivered. Releases published after the update period are not included in the license; an active Support & Service Entitlement gives access to them. When these periods end, your right to use the versions you already have continues.

The AcelleMail software and its source code remain the property of their copyright holder. You receive a license to use them, not ownership of them. If a license is used in breach of these terms, we may revoke it, and you must then stop using the installation it covered.

Licenses bought on Envato Market (CodeCanyon) remain under Envato’s Regular and Extended license terms, including after you import them into your account on this website.

What the Service is

The AcelleMail Support & Service Entitlement is the recurring subscription that backs an active AcelleMail installation. Depending on the tier you choose (Essential, Plus, Pro, or Max), the Service may include:

Access to product updates and the public support knowledge base.
Email support (priority on higher tiers; standard on Essential).
Installation and upgrade assistance from our engineers.
AI credits consumable through the optional AcelleMail AI plugin (available from Plus and above).
Premium plugins and early access to new features (Pro and above).
Custom plugin development services scoped to the AcelleMail ecosystem (Max).

The exact contents of each tier are described on the support plans page. The Service is delivered into your AcelleMail installation or directly from this website where applicable. The AcelleMail application license is sold separately on this website — you must hold a valid AcelleMail license to use most components of the Service.

Where the Service includes AI features, those features rely on third-party large language model providers (such as OpenAI and Anthropic) operating as our sub-processors. We do not guarantee any specific model, response time, or output quality; AI outputs are statistical and may contain errors, omissions, or fabricated information. You are responsible for reviewing AI output before sending it to your subscribers.

Pricing and billing

The AcelleMail Support & Service Entitlement is sold in two combinable forms:

Subscription plans. A recurring monthly or quarterly fee tied to a tier (Essential, Plus, Pro, Max) that includes the entitlements described on the support plans page, including a base allotment of AI credits where applicable to that tier. Subscriptions auto-renew at the end of each period at the then-current price until cancelled. You can cancel at any time from your account billing page; cancellation stops the next renewal but does not retroactively refund the current period unless required by local consumer law.
Credit packs. A one-time top-up of additional AI request credits, available to subscribers whose tier includes AI features. Credits do not expire as long as your account remains in good standing. Credits are consumed by request volume and by the unit cost of the model used (the per-model cost is shown in your account dashboard before each request).

Unused subscription allotment from a billing period does not roll over. Credit-pack balance is consumed only after the subscription allotment for the current period is exhausted.

All prices on this website are shown exclusive of tax. Any applicable VAT / GST / sales tax is calculated at checkout based on your billing location and added to the order total where we are required to collect it under the law of your jurisdiction.

Refunds

Detailed refund rules (SaaS subscription, add-on / credit pack, perpetual license / one-off) are described in the Refund & Returns Policy, including per-product-type windows, refund request process, and exceptions.

Acceptable use

You may not use the Service, directly or indirectly, to:

Generate or distribute content that violates applicable law in your jurisdiction or in the jurisdiction of the recipients — including unsolicited commercial email at scale that breaches CAN-SPAM, GDPR, CASL, PECR, or equivalent anti-spam regimes.
Generate sexually explicit content, content sexualising minors, content depicting non-consensual acts, or content promoting violence, self-harm, or terrorism.
Generate content that infringes copyright, trademark, trade secret, or other intellectual-property rights of third parties.
Generate deepfake imagery, voice clones, face-swaps, or other synthetic media impersonating real persons without their documented consent.
Generate misleading medical, legal, or financial advice presented as professional opinion; generate content for pseudo-scientific or fraudulent claims.
Generate content for pyramid schemes, multi-level marketing, fake reviews, fake testimonials, or other deceptive marketing.
Probe, reverse-engineer, scrape, or attempt to extract training data, model weights, or system prompts from the Service or from its underlying model providers.
Resell or sublicense the Service to third parties as a standalone API, or wrap it in a competing product offered to the public.
Use Service deliverables (premium plugins, custom-developed code, support artefacts) outside the AcelleMail installation tied to the subscription.
Operate the Service in industries or for purposes prohibited by the upstream LLM provider's usage policies or by applicable law.

We may suspend or terminate your access to the Service without refund if we determine, in good faith, that you have materially violated this acceptable use policy. For ambiguous cases we will reach out before suspending where the situation allows.

Data, privacy, and confidentiality

Support tickets, prompts you submit to the AI features of the Service, and the outputs returned are processed by us and by the underlying model providers solely to deliver and improve the Service. We do not sell prompts, outputs, or support content to third parties, and we do not use customer prompts to train our own models. Where Service data contains personal data of your subscribers, you are the data controller and we are the data processor within the meaning of applicable data-protection law; full handling, retention, the sub-processor list, and cross-border-transfer detail are documented in our Privacy Policy.

Service availability and warranties

The Service is provided on a commercially reasonable best-effort basis without an explicit service-level agreement. AI outputs are statistical and unverified; you must independently review AI-generated content before relying on it for business decisions or sending it to subscribers. To the maximum extent permitted by law, the Service is provided "as-is" without warranty of any kind. Our maximum aggregate liability for any claim arising out of the Service or the AcelleMail application license in any rolling 12-month period is capped at the amount you actually paid us in that period.

Suspension, termination, and changes

Either party may terminate the relationship at any time: you by cancelling your subscription and not purchasing further credits, us by giving you written notice via the email address on your account. We may suspend access immediately for material breach of acceptable use, for non-payment after a 7-day grace period, or where required by law. On termination, unused credit-pack balances remain refundable only within the 7-day window set out in the Refund Policy. Your perpetual AcelleMail application license, once purchased, is not affected by termination of the subscription.

We may change these terms — for instance to add a new model, change tier pricing, or update acceptable use to reflect upstream provider policy. Material changes will be announced by email to the address on your account at least 30 days before they take effect; you may cancel and request a pro-rata refund of the unused portion of any prepaid subscription if you do not agree to a material change.

Complaints and dispute resolution

Send complaints to [email protected]. We answer and resolve them within the times set out in the Complaint Resolution Policy. Disputes that cannot be resolved between us are governed by the laws of Hong Kong and subject to the jurisdiction of its competent courts, without prejudice to mandatory consumer-protection rights you may have under the laws of your country of habitual residence.

Contact

Application license, subscription billing, support, refunds, AI credits, premium plugins, and custom development: [email protected].