[brejesh4318]

Description

Adds a read-only handler for Brevo (formerly Sendinblue) using the v3 REST API. No new dependencies.

Tables: contacts, lists, campaigns (delivery stats summed across lists) and contact_events (opens, clicks, and so on).

• Pages through all results using the API's total count.
• Sends email, list_id, campaign_id and event_type equality filters to Brevo instead of filtering locally.
• Retries on HTTP 429, honouring Retry-After.
• check_connection passes Brevo's own error text through, because a 401 is often the IP allowlist rather than a bad key.
• contact_events makes one API call per contact unless filtered by email, since Brevo has no bulk events endpoint. This is documented in the README.

Not included: write support (INSERT into contacts).

Type of change

• ⚡ New feature (non-breaking change which adds functionality)

Verification Process

To ensure the changes are working as expected:

• Test Location: mindsdb/integrations/handlers/brevo_handler/tests/test_brevo_handler.py
• Verification Steps:
  1. Run python -m unittest mindsdb.integrations.handlers.brevo_handler.tests.test_brevo_handler -v (14 tests).
  2. With a Brevo API key, run:

     CREATE DATABASE brevo_src WITH ENGINE = 'brevo', PARAMETERS = {"api_key": "xkeysib-..."};
     SELECT * FROM brevo_src.contacts LIMIT 10;
     SELECT campaign_name, sent, delivered, open_rate FROM brevo_src.campaigns;

  I ran all four tables, with filters and LIMIT, directly against a real Brevo account. I have not yet run them through the MindsDB SQL layer.

Additional Media:

• I have attached a screenshot showcasing the new functionality or change.

Checklist:

• My code follows the style guidelines(PEP 8) of MindsDB.
• I have appropriately commented on my code, especially in complex areas.
• Necessary documentation updates are either made or tracked in issues.
• Relevant unit and integration tests are updated or added.

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[brejesh4318]

I have read the CLA Document and I hereby sign the CLA