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Connect with Oxygen ERP

Register in Oxygen and setup


Before connecting Hosthub with Oxygen ERP, you need to create one or more accounts in Oxygen.

If all your rentals are managed by a single VAT number then only one Oxygen account is needed.

If you want to connect multiple managers with separate VATs with Hosthub, then you need to register each VAT with its own account in Oxygen.


In Oxygen you need to setup the following:

  • Your business details.
  • Your branches
  • Your connectivity with MyDATA and the submission mode (manual or automatic).
  • Your email invoice notifications


After the account creation and setup are concluded, you ask from Oxygen support team to provide you an API key to connect on Hosthub. Only the account owner can request the API key from Oxygen support.


To activate the connection, contact Hosthub support and provide the following two details:

  • Your Oxygen API key (this is different from the subscription key; the API key contains dashes, e.g. a06ffbd9-2d56-454b-b7aa-75b0df8c0c0b)
  • The username (email) you use to log in to your Oxygen account


Hosthub does not need your Oxygen password. Once these details are provided, Hosthub will activate the integration and you can map your rentals.


Oxygen support contact details:


Multiple accounts: If you manage properties under different VAT numbers, register a separate Oxygen account for each VAT and provide the API key and email of each account. Additional Oxygen accounts can be added without limit.


Pro plan discount: Pro plan users can register through the Hosthub link (https://app.pelatologio.gr/register.php?pcode=phosthub&bn=pcp) for a special reduced price. After paying for the Oxygen package, send Hosthub the Oxygen transaction receipt and the amount is covered via a discount on the Pro plan.


Oxygen billing options: Oxygen is subscribed directly through Oxygen (Pelatologio). To subscribe for a shorter period such as 6 months instead of a full year, choose the monthly billing cycle and pay per month, rather than switching to the annual plan.


How the discount is applied: The Oxygen cost is refunded through a discount on the Pro plan only (not the Standard plan), and appears on the Pro invoice. The Pro invoice is issued at the start of each month (1st or 2nd) based on the previous month's check-outs, so the percentage-based charge can be calculated. The Oxygen discount is calculated on an annual basis and spread equally across the 12 months (e.g. a €74 Oxygen payment is divided by 12 and deducted gradually from each monthly Pro charge). For months without bookings, part of the amount may be returned via credit or refund.

Connect rentals to Oxygen Accounts and Branches

After the Oxygen API keys are set up you can see all your Oxygen accounts in the integration page.

From there you can select to Map rentals to the activated Oxygen accounts. For each rental you need to select the Oxygen account that it should be invoiced from. After the account selection, you will also need to provide the branch that is associated with this Rental (if you are using branches as a business).


In the branch selector you will only see branches that have already been created in Oxygen environment. If no branches have been created there then the list will be empty.




After an Oxygen account and a branch is linked with a rental, all receipts/invoices that are created for each rental booking, when manually or automatically sent, they will be submitted to the linked Oxygen account and for the linked branch. Then they will be uploaded to MyDATA from Oxygen manually or automatically (based on your preferences there).


Mapping steps


To map your rentals, go to Integrations > Oxygen > Map rentals, select the Oxygen account for each rental you want, and click Link. You do not have to map all rentals—only the ones you choose. If you want a rental to be invoiced from a specific Oxygen branch/account (for example, only the branch relevant to a location), select that account so other accounting systems are not affected.


Before sending documents


Before you can issue and send invoices/receipts:

  • In Oxygen, set the VAT rates to 13% and 0% in the settings.
  • In Hosthub, configure the required tax settings per rental (Setup > Rentals > click the rental name > Tax settings > Edit > save). This must be done for every rental for amounts to be calculated correctly.


Automatic MyDATA submission


If you want automatic submission to MyDATA as soon as a document is issued from Hosthub, contact Oxygen and request that they enable this for your account.


Who can activate the connection and map rentals


The Oxygen integration can only be activated and rentals can only be mapped from the main (Admin) account. Invited team members cannot map rentals to Oxygen, even if they have permission to view and edit taxes.


Once the Admin has mapped the rentals to Oxygen, invited members who have been granted the document-issuing permission will see the option to issue documents in their own account. If an invited member sees the AADE options but the Oxygen options are empty (no buttons), it means the rentals have not yet been mapped to Oxygen by the Admin.

Updated on: 29/07/2026

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