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Privacy Policy

Last update: 27 April 2026

01. Overview

Argonstack ("Argonstack", "we", "our") respects your privacy and is committed to protecting it in accordance with this Privacy Policy ("Policy").

This Policy explains how we collect, use and protect your personal data when you visit our website argonstack.gr or use our platform and related services.

By accessing or using the Platform, you accept the practices described in this Policy. If you do not agree, please do not use our services.

02. Data We Collect

Argonstack collects the following categories of data:

a. Data you provide to us: Such as full name, email address, phone number, company name, billing information.

b. Data collected automatically: Such as IP address, browser type, device identifiers and platform usage patterns. This data is also personal data where it allows you to be identified directly or indirectly: IP addresses in particular are treated as personal data and are protected by the same safeguards described in this Policy.

The data are collected:

  • Directly from you when you create an account, fill in forms, subscribe to updates or contact support.
  • Automatically, through cookies, analytics tools and similar technologies.
  • From third-party providers, such as analytics or marketing services, to the extent permitted by law.

03. Legal Basis for Processing

The processing of personal data takes place under one or more of the following legal bases of the GDPR:

  • Performing a contract with you or your organisation.
  • Compliance with legal obligations.
  • Legitimate business interests, such as service improvement, communication and security.
  • Consent, where this is explicitly provided (e.g. newsletter subscription).

04. Use of Data

We use your data exclusively for:

  • The operation, maintenance and improvement of the platform and services.
  • Providing support and managing payments.
  • The personalisation of the user experience.
  • Sending updates or newsletters, only with consent.
  • Compliance with legal or regulatory obligations.

We do not sell or lease personal data to third parties.

For Google user data the additional restrictions of section 14 apply: it is not used for advertising, nor to build, train or improve any artificial intelligence or machine-learning model.

05. Access to Customer Data and Restrictions

Although Argonstack may technically have access to data stored on the platform by customers (e.g. contacts, messages), it has no right to use or process them except upon explicit request of the customer for technical support purposes.

Restricted Access Clause
Access to data is strictly limited to support or maintenance cases requested by the customer.
Liability clause
Any unauthorized access or misuse of data by Argonstack personnel entails full individual liability of the data subject in accordance with GDPR and Greek Law.

The clause above concerns access by Argonstack personnel. It does not restrict the automated processing carried out by the platform itself and by the processors acting on its behalf in order to provide the features the customer has enabled, as described in sections 4 and 14. Staff access is also possible where it is strictly necessary for the security of the service or to comply with a legal obligation.

06. Data Retention

Personal data is kept only for as long as required for the purposes of this Policy or as required by law.

Customer data stored on the platform will be deleted or anonymised within 90 days of the account expiry, unless otherwise requested.

Google user data specifically is deleted within 30 days of the closure of the organisation's account, that is, earlier than the period above (see section 14).

07. Sub-Performers and Third Party Providers

Argonstack uses selected infrastructure and service providers within and outside the EU. All providers are bound by Data Processing Contracts and, where required, Standard Contractual Clauses (SCCs), ensuring an equivalent level of protection.

The providers that process Google user data are named in section 14.

08. Security measures

We apply strict technical and organisational measures, such as:

  • Data encryption during transport and storage.
  • Access control and logging of administrator actions.
  • Multi-factor authentication.
  • Backups and regular security checks.

09. Rights of Subjects

You have the following rights:

  • Access to your data.
  • Correction of inaccurate data.
  • Data deletion.
  • Restriction or objection to processing.
  • Data portability.
  • Withdrawal of your consent at any time, where processing is based on it (for example, newsletter sign-up, analytics and marketing cookies). Withdrawal applies for the future and does not affect the lawfulness of processing carried out beforehand.
  • Lodging a complaint with the competent supervisory authority. In Greece this is the Hellenic Data Protection Authority (www.dpa.gr).

Requests shall be submitted to [email protected].

10–12. Other provisions

International Transfers: Data may be processed outside the EEA. In any case, appropriate safeguards are applied in accordance with Chapter V of the GDPR.

Cookies: We use cookies in accordance with the separate Cookies Policy.

Updates: The Policy may be revised for legal or technical reasons.

13. Contact

  • Company nameARGN L.P.
  • Websitehttps://argonstack.gr
  • Email[email protected]
  • Phone+30 210 710 6163
  • Reg. No. (GEMI)184296303000
  • Tax ID (ΑΦΜ)802869201
  • AddressVaktrianis 114, 15772 Zografou, Athens, Greece

14. Google user data in ArgonCRM

What we access. If you connect a Google account, ArgonCRM requests only these permissions:

  • Gmail, read (gmail.readonly): new messages from the day you connect onward, including headers, body, and the names and sizes of attachments. Attachment contents are not downloaded.
  • Gmail, send (gmail.send): to send the emails, replies and campaign messages that you write or approve in ArgonCRM, from your own address.
  • Google Calendar events (calendar.events) and calendar list (calendar.calendarlist.readonly): to write the appointments you book in ArgonCRM to the calendar you choose, and to read events from the calendars you switch on so that your busy time is shown.
  • Your email address (userinfo.email): to identify which account you connected.

How we use it. Only to provide features you see in ArgonCRM: filing your emails on the matching customer record, replying from your own address, sending the campaigns you launch, keeping your appointments and calendar in agreement, and showing your availability. If your organisation enables the AI assistant, it can read this data when you ask it a question (see below). We do not sell Google user data, use it for advertising, or use it to build, train or improve any AI or machine-learning model.

Who it is shared with. We share Google user data only with the service providers that process it for us to run these features:

  • Amazon Web Services EMEA SARL: hosting and database, in the AWS Frankfurt region (eu-central-1), Germany.
  • Anthropic, PBC (United States): only if your organisation enables the AI assistant, and only the content needed to answer a request you make. Anthropic's commercial terms prohibit it from training models on this data. It deletes API inputs and outputs within 30 days, and the transfer is covered by Anthropic's Data Processing Addendum, which incorporates the EU Standard Contractual Clauses.

No other third party receives Google user data. This includes our SMS/Viber provider and any analytics or advertising service. We may disclose data if required by law, to protect the security of the service, or as part of a merger or acquisition, in which case we will ask for your consent first.

Human access. Our staff do not read your Google user data unless you ask us to for support, or unless it is necessary for security or to comply with the law.

Storage and security. Data is encrypted in transit (TLS). OAuth access tokens are additionally encrypted before they are stored.

Retention and deletion. Emails and calendar entries stay part of the customer records of your organisation until you or your organisation delete them, or until 30 days after your organisation's account is closed. If you disconnect a mailbox or calendar in ArgonCRM, we delete its access token immediately and stop reading. You can also remove ArgonCRM's access at any time at https://myaccount.google.com/connections. To request deletion, write to [email protected].

Limited Use.

ArgonCRM's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.