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Flow Insiders Letter No.2

This is the No.2 letter shared with Columns Flow builders.

In my last email, I shared the core concepts behind Columns Flow. If you have not seen it yet, you can read it here.

In that letter, I highlighted the opportunity created by AI maturity and our focus on Integration & Automation. I also shared this idea with a public community and received thoughtful comments and questions.

Overall, I see this as a positive validation signal. The discussion covered a wide range of topics, from AI behavior and product direction to pricing. If you are interested, you can join the discussion.

What Is New?​

Alerts​

A Flow defines how your data is transformed. An Alert helps you monitor outcomes so you can react quickly when something unexpected happens.

Adding an alert is simple. Type a sentence like: Notify me when total sales in Asia is less than 2000.

Alerts can be delivered to email, Slack, or your own system via webhook.

Flow Alert

Change Handling​

Another common question is: What happens if my source data changes? For example, what if a connected spreadsheet is deleted or a field is renamed?

Columns Flow checks schema compatibility on every sync. If a change breaks expected structure, the flow fails fast and notifies you.

You can then fix the source or update the flow to handle the change.

Integrations Revamp​

Google Sheets remains a critical integration for business users, while HTTP APIs are often the default for developers.

We made major improvements to both:

  • Google Sheets: connect any specific sheet tab via link, not only the first tab.
  • HTTP API: select any node in a JSON tree as your source payload.

JSON API example:

Flow

Connected once, Flow forever.