Month in Review: September 2025
We’re rolling out a new Python‑based Mailkit connector, session revocation in MCP, workspace revert support, a new Shoptet dashboard template, and more.
Mailkit: New Python Components, Java Version Deprecated
The Mailkit data source and Mailkit data destination components have been rewritten in Python, replacing the old Java versions. Mailkit is an advanced email marketing platform for managing campaigns, recipient lists, and detailed delivery statistics. The old components will remain available (but deprecated), so any new configurations must be created with the new Python versions.

MCP Server
- MCP OAuth Session Revocation: Users can now view and revoke their MCP server sessions from the /admin/account/sessions UI, giving greater control over active logins and session security.
- MCP Server v1.22.2: Improves Python Transformation reliability, output consistency, and tool prompting.
- ChatGPT Setup Instructions in MCP: Added guidance in the MCP settings for users with ChatGPT Plus or Pro accounts. Team and Enterprise accounts are not supported yet.
New Template Available: Shoptet Ads & Sales Dashboard
Quickly launch a dashboard connecting Shoptet, GA4, and Meta Ads, powered by Python transformations and visualized in a Streamlit Data App. Works on Snowflake and BigQuery.

Workspace Revert Support in UI
You can now revert workspace configurations in the UI. The only limitation: version 1 (without linked sandbox ID) is not supported for revert.

CLI
CLI v2.39.5: Adds --skip-workflows
to kbc init
, handles 0-row downloads, and updates encryption API.
Your Feedback Matters
These updates are already live and designed to improve your daily workflows. If you notice anything unusual or have ideas for what we should tackle next, don’t hesitate to get in touch—we’d love to hear from you.
PS: Did you notice these other September updates?
- Decompress Processor V2 — One Processor to Rule All Archive Types
- Ship Data Apps Seamlessly with MCP
- Deprecation of SSE Transport in MCP Server
- Keboola MCP Server is Now Generally Available
- Snowflake Workspaces and Authentication Changes Coming in 2025
- Experimental Iceberg Extractor and Writer Released
- Delta Tables Support via New Extractor and Writer