Webinar invite

Write a Halden marketing email inviting developers who opted in to Halden webinar updates to a live online session. Cover the facts below.

The session is called Getting more from Sage Code. It runs live online on Thursday, October 8, 2026 at 9:00 AM PT (12:00 PM ET) and lasts 45 minutes including Q&A. The joining link is sent after registration.

The premise: the same completed task can cost two very different amounts depending on how Sage Code is used. The session covers which dials to turn.

The session covers five topics:

• The right model and effort level: a simple rule for each dial.
• Cheaper long sessions: when to /clear, /fold, and /rewind.
• Getting more from prompt caching: what breaks it, and when that is fine.
• Leaner context: quiet noisy commands and hand big jobs to subagents.
• Less startup overhead: a quick /context audit of SAGE.md and tool servers.

Two speakers present. Mara Lindqvist, Developer Relations Lead at Halden. Portrait: assets.illustrations.speakerMaraLindqvist. Tomas Okafor, Solutions Engineer at Halden. Portrait: assets.illustrations.speakerTomasOkafor.

Registration is at https://halden-email.s3.amazonaws.com/webinars/sage-code-cost/register and is the one action the email asks for. The event page is at https://halden-email.s3.amazonaws.com/webinars/sage-code-cost

The footer states that the reader is receiving the email because they opted in to updates from Halden, gives the postal address, and links to https://halden-email.s3.amazonaws.com/unsubscribe and https://halden-email.s3.amazonaws.com/preferences

Dark mode should be supported.

Use /world/halden-email for brand chrome and CSS; the marketing family fits. Use the absolute HTTPS URLs from tokens.json; do not use /world/ paths as image src.

Leave the HTML in output/email.html, a plain-text version in output/email.txt, and the subject in output/meta.json as {"subject": "..."}. Don't include From, To, or Date headers.