Read Full Content Before Deciding

When making any decision based on external content — email body, web page, document, message thread — always read the complete content. Never base a decision on a preview, snippet, truncated summary, or subject line alone.

The rule

Before drawing any conclusion from external content:

1. Fetch the full source (not a summary or preview field)
2. Read the complete text
3. Only then make a decision

For Gmail specifically: use format: "full", decode payload.parts[] (find mimeType: "text/plain", base64url-decode body.data). messageText, preview, and snippet fields are truncated — acceptable for display only, never for decisions.

Why

Truncated previews optimize for speed at the cost of correctness. Re-doing work because of a wrong decision based on incomplete content is more expensive than reading fully once. There is no valid reason to use a preview when making a decision.

Applies to

• Task due date assignment from email links
• Email importance classification
• Any action, recommendation, or classification based on content from an external source