Mollie offers an easy-to-use platform for accepting online payments within the Blesta Billing system
From £11.99 - View Pricing
What Mollie gives you
Bill and take payment in any of 29 currencies, including EUR, GBP, USD, AUD, CAD, CHF, JPY and SEK.
Configure it independently for each brand on a multi-company install, so every company runs with its own settings.
Every staff and client label ships in editable language files, ready to translate into any language or reword to match your brand.
Paste a live or test Mollie API key and the settings page tells you which one you have saved, so you always know whether real money is moving.
A built-in demo mode runs the whole extension from bundled sample data, so you can trial every screen and action before you have an account or API key.
Your API key is verified against Mollie the moment you save the settings, so a typo is caught immediately instead of on a client's first payment attempt.
The Mollie checkout page opens in the language the client uses in your client area whenever Mollie supports it, so the payment step never breaks the flow.
What it sends and what comes back is recorded in Blesta's own log, with credentials never written to it, so you can see exactly what happened without leaving your admin area.
Every incoming payment notification is verified and re-confirmed with the payment provider before anything is applied, so an invoice is only ever marked paid on a payment the provider itself confirms.
Clients are sent to Mollie's hosted checkout and pay with whichever methods you have enabled in your Mollie account, from iDEAL and Bancontact to cards and bank transfer, with no extra setup in Blesta.
A refund issued in the provider's dashboard, or a dispute raised against a payment, is picked up automatically and applied to the matching Blesta transaction, so your records stay in step without manual reconciliation.
Issue a refund straight from the transaction in your admin area and it is sent to Mollie for you, with no need to open their dashboard. Blesta's admin refunds the transaction's full amount; for a partial refund, issue it from your Mollie dashboard instead - it syncs back and marks the whole transaction refunded either way.

Welcome, and thank you for choosing the Mollie Gateway! We're delighted to have you as a customer and are committed to ensuring you have a seamless experience. This guide aims to walk you through the installation and configuration of your new gateway. If you're new to Blesta or encounter any issues, please don't hesitate to reach out for support.
The Mollie Gateway connects Blesta to Mollie's hosted checkout (Payments API v2). Clients paying an invoice are redirected to Mollie, where they can pay with any payment method you have enabled in your Mollie dashboard (iDEAL, cards, Bancontact, and more). Mollie's webhook reports the payment back to Blesta, which records the transaction and applies it to the right invoices automatically. Staff can also issue refunds directly from Blesta's transaction management.
Download the Gateway:
Upload to Blesta:
/var/www/html/blesta/components/gateways/nonmerchant/mollie/Install the Gateway:
Manage the Gateway:
/admin/settings/company/gateways/installed/).Test the Gateway:
test_...) instead of your live key - Mollie decides live vs. test by the token itself; there is no separate mode switch in Blesta.Login to Mollie:
API Keys:
live_...) for production, or the "Test API Key" (test_...) for testing.Configure the Token in Blesta:
Transaction Failures:
live_... key for real transactions. Check Tools > Logs > Gateway in Blesta for the request/response of each Mollie call.Currency Mismatch:
If you encounter any issues or have suggestions for improving the gateway, please get in touch with us. We are committed to providing robust updates and welcome customer feedback.
Installing and updating extensions can now be done automatically through the Blesta Club Subscription Manager - this is the recommended way going forward.

Welcome, and thank you for purchasing the Mollie Gateway! We're delighted to have you as a customer and are committed to ensuring you have a seamless experience. This README aims to guide you through the installation of your new gateway. If you're new to Blesta or encounter any issues, please don't hesitate to reach out for support.
For detailed instructions on how to install the Mollie Gateway, please ensure you have the extension manager installed for leased extensions and follow these steps:
Obtain the Gateway:
Upload to Blesta:
/var/www/html/blesta/components/gateways/nonmerchant/mollie/Install the Gateway:
Configure the Gateway:
/admin/settings/company/gateways/installed/).Enable the Currencies:
You're now done with the installation! Proceed to configure the gateway as needed by following the usage guide.
If you encounter any issues or have suggestions for improving the gateway, please get in touch with us. We are committed to providing robust updates and welcome customer feedback.
Installing and updating extensions can now be done automatically through the Blesta Club Subscription Manager - this is the recommended way going forward.

To ensure you’re always using the latest version of the Mollie Gateway, follow these steps to update the gateway in your Blesta installation.
/var/www/html/blesta/components/gateways/nonmerchant/mollie/Updating to 2.0.0: re-saving the settings is required, not optional, unless you have already re-saved them since 1.1.0. The gateway stores your Mollie API Token encrypted, and a token saved by 1.0.3 or earlier is still stored as plain text. Until you re-save, Mollie rejects every call with an authentication error: clients cannot start a payment, and incoming payment notifications are discarded, so paid invoices are not marked paid.
Open the gateway's settings, paste your API Token in again and click Update. The save checks the token with Mollie before accepting it, so a clean save confirms the gateway is working. If any payments were made while the token was unusable, re-send the payment notification for them from your Mollie dashboard once the settings are saved.
Test Mode:
Transaction Testing:
Missing or Incorrect Files:
API Key Issues:
Compatibility Issues:
If you encounter any issues during the update process or have suggestions for improving the gateway, please reach out to us. We are dedicated to providing continuous updates and value your feedback.

Welcome, and thank you for purchasing the Mollie Gateway! This guide aims to walk you through the proper usage of the Mollie Gateway in your Blesta installation. If you're new to Blesta or encounter any issues, please don't hesitate to reach out for support.
Once installed and configured, the Mollie Gateway lets your clients pay through Mollie's hosted checkout with whichever payment methods you have enabled in your Mollie dashboard.
Gateway Settings:
/admin/settings/company/gateways/installed/) and click "Manage" on Mollie.Refunds:
Logs:
Test Mode:
test_...) as the API Token. Mollie decides live vs. test by the token itself; there is no separate mode switch in Blesta.Demo Without a Mollie Account:
Switch to Live Mode:
live_...) and untick Mock API for real transactions.live_... key for real payments) and review Tools > Logs > Gateway for Mollie's response to the failing call.If you encounter any issues or have suggestions for improving the gateway, please don't hesitate to reach out. We are committed to providing continuous updates and welcome your feedback.
v2.0.0 - 2026-09-11
PHP 7.2 - 7.4, 8.1 - 8.4 · Blesta 5.x
IMPORTANT: after updating, open the gateway's settings and click Update once to re-save your API Token - it is now stored encrypted, and payments will fail until you do (see the update guide)
Refunds and chargebacks issued from the Mollie dashboard now sync back to Blesta automatically
The API token is now verified against Mollie when the settings are saved, so typos fail immediately
The settings page now indicates whether the saved API key is a live or test key
The hosted checkout now opens in the paying client's language when Mollie supports it
Fixed a blank error message when Mollie cannot be reached: the admin refund screen now reports the actual connection problem, while the checkout shows clients a plain retry message and the full cause is written to Tools > Logs > Gateway
Failed responses that carry no Mollie error body, such as a proxy or firewall error page, are no longer treated as successful
Fixed payments and refunds of 1,000 or more being rejected by Mollie, and amounts being sent with the wrong number of decimal places in currencies configured for more than two
Fixed the checkout showing a page with no payment button and no message when Mollie returned a reply Blesta could not read
Fixed the success page showing only "Your payment is being processed" with no Amount, Currency or Invoices listed below it
v1.0.3 - 2025-10-27
PHP 7.2 - 7.3, 8.1 - 8.4 · Blesta 5.x
IMPORTANT: Fixed a bug allowing unprocessed transactions to be added and credited in Blesta
v1.0.2 - 2025-05-03
PHP 7.2 - 7.3, 8.1 - 8.4 · Blesta 5.x
Added Dutch translations - Provided by: Arthur Kerkmeester, www.rhodyon.eu
v1.0.1 - 2025-04-27
PHP 7.2 - 7.3, 8.1 - 8.4 · Blesta 5.x
Fixed payments not being assigned to invoices automatically
v1.0.0 - 2024-09-22
PHP 7.2 - 7.3, 8.1 - 8.4 · Blesta 5.x
Blesta Club release
Get exactly what you need and want.
Requires PHP 7.2 - 7.4, 8.1 - 8.4 · Blesta 5.x
Value: £42.3
Not sure whether to lease or own? Our FAQ explains how the licence types differ.
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