## Summary
The billing guide omits Max and contradicts the pricing page about Gmail access. Add Max ($100/month with $130 in monthly credits), correct the plan feature matrix, list all six current coding plugins as available on Free with credit-consuming usage, and update both remaining Scale-only requirements on the Gmail connector page to Max or above.
Clarify that paid-plan automatic top-up limits cap automatic credit purchases, not the total invoice, and correct the documented auto-topup update endpoint from PATCH to POST.
Companion website changes: https://github.com/supermemoryai/landing-2/pull/32
## Validation
- Compared prices, credit inclusions, connector gates, and top-up behavior with the console and API source on main. Verified that all six coding plugins are on FREE_TIER_PLUGIN_IDS and the authentication route bypasses the generic Pro gate for them. Usage still consumes plan credits.
- Checked Markdown table column counts and required Max entries; `git diff --check` passed.
- Confirmed the Gmail introduction, prerequisite, and troubleshooting requirement consistently say Max or above.
- Documentation-only change. A full Mintlify build was not run.
Crawler-access verification, AI-search benchmarking, and analytics/measurement work are excluded from this PR.
