Terms and Conditions
Last updated: August 2026
Please note — non-binding translation. This English text is a convenience translation of the German “Allgemeine Geschäftsbedingungen”. Only the German version is legally binding. In the event of any discrepancy or dispute between the two versions, the German version shall prevail.
§ 1 Scope & provider
These Terms and Conditions govern the use of the web application Astreo, provided by becom Systemhaus GmbH & Co. KG, Am Feldkreuz 16a, 35578 Wetzlar, Germany (the “Provider”). Any deviating terms of the customer are hereby rejected unless their validity has been expressly agreed to.
Astreo is offered exclusively to entrepreneurs within the meaning of Section 14 of the German Civil Code (BGB), legal entities under public law and special funds under public law. Contracts with consumers within the meaning of Section 13 BGB are excluded. By registering, the customer warrants that they use the service in the exercise of their commercial or self-employed professional activity; they expressly confirm this when setting up the account. Should it emerge that the customer acted as a consumer, the Provider is entitled to terminate the contract for good cause and to suspend the account.
§ 2 Description of services
Astreo is a web-based email client with features for teams (including shared mailbox, assignment, internal notes) as well as optional AI-assisted functions. Astreo connects existing mailboxes (Microsoft 365/Outlook, IMAP/SMTP) and is not an email provider; the mailboxes remain with the customer's respective provider. The specific scope of functions results from the edition selected in each case.
§ 3 Registration & account
Use of the service requires an account. Several sign-in methods are available: single sign-on via Google or Microsoft, a magic link by email (a one-time sign-in link), and email and password with mandatory two-factor authentication (TOTP). The customer is responsible for keeping their credentials and second factor confidential and for any actions carried out under their account.
§ 4 Conclusion of contract & trial period
The contract comes into effect upon activation of the account or upon booking a paid plan. Any free trial or introductory period ends automatically and does not oblige the customer to continue.
A contract requires the customer's confirmation that they are acting as an entrepreneur (§ 1) as well as complete billing details (company, address, country of establishment). Customers established in another member state of the European Union must additionally provide a valid VAT identification number; without it, no contract is concluded.
§ 5 Prices & payment
The prices stated at the time of booking apply. Paid plans are billed as a package price per team size. Billing is handled via the payment provider Stripe, either monthly or annually in advance.
All prices are net prices and are exclusive of any value-added tax owed by law. VAT treatment depends on the customer's place of establishment:
- Germany: German VAT is charged at the statutory rate (currently 19%).
- Rest of the EU: Where a valid VAT identification number is provided, no German VAT is charged and the tax liability shifts to the customer (reverse charge, Section 13b UStG / Art. 196 of the EU VAT Directive). Without a valid VAT identification number, no purchase is possible.
- Non-EU countries: The service is not taxable in Germany and no German VAT is charged. Any tax obligations in the customer's country of residence are borne by the customer.
The customer must keep their billing details and VAT identification number up to date and notify any changes without delay. If a VAT identification number provided turns out to be invalid, the Provider is entitled to charge the statutory VAT retroactively.
§ 6 Term & termination
The contract runs for an indefinite period and may be terminated with effect from the end of the respective booked billing period. The right to extraordinary termination for good cause remains unaffected.
§ 7 Customer obligations
- lawful use of the service; no abusive use, no sending of impermissible bulk email (spam);
- compliance with the terms of the connected providers (e.g. Google, Microsoft) and of any AI providers used;
- ensuring that the customer is authorised to process the mailboxes and content integrated into Astreo.
§ 8 AI features
AI features are optional and use a provider chosen by the customer with the customer's own key. AI output is always an editable draft and is never sent automatically. The Provider gives no warranty as to the accuracy or suitability of AI output; responsibility for the content sent lies with the customer.
§ 9 Data protection & data security
Details on the processing of personal data are set out in the privacy policy. Credentials are stored encrypted at rest.
§ 10 Availability & maintenance
The Provider endeavours to achieve high availability. No specific availability rate is warranted without a separate agreement. Maintenance work as well as disruptions at third-party services (e.g. mail providers, AI providers) may temporarily restrict use.
§ 11 Liability
The Provider is liable without limitation in cases of intent and gross negligence as well as for injury to life, body or health. In cases of ordinary negligence, the Provider is liable only for the breach of a material contractual obligation and limited in amount to the damage typical for this type of contract and foreseeable at the time. Liability is otherwise excluded.
§ 12 Open core & licence
The core client of Astreo is open source (AGPL) and can be self-hosted. The team features are a commercial module hosted by the Provider. The respective licence terms apply to self-hosted use.
§ 13 Changes to these Terms
The Provider may amend these Terms with effect for the future insofar as this is necessary and does not unreasonably disadvantage the customer. Changes will be communicated in an appropriate manner.
§ 14 Final provisions
The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods. If the customer is a merchant, a legal entity under public law or a special fund under public law, the place of jurisdiction is the Provider's registered office. As the offer is directed exclusively at entrepreneurs (§ 1), no consumer rights apply, in particular no right of withdrawal under Sections 312g, 355 BGB. Should any provision be invalid, the validity of the remaining provisions remains unaffected. These Terms were drawn up in German; the German version is authoritative, and this English text serves solely for information purposes.