Option A: ChatGPT: designs from your space and mail types
Best when: You want ChatGPT designing from your space and mail types
What it does: Designs layout, labels, routine; you walk it through
Strong at: Each label carries its own rule
Limit: Fit to your space unproven; walk-through required
Free plan: Yes, limited (free tier limits images, voice, deep research, Codex)
Option B: You choose the categories; Claude designs around them
Best when: You want to choose the categories yourself
What it does: You sort; Claude designs around your categories
Strong at: Categories come from your real mail
Limit: Fit to your space unproven; check required
Free plan: Yes, limited (usage capped in 5-hour and weekly windows)
Option C: You design it; Gemini only challenges the routine
Best when: You want to design it yourself, Gemini only challenges
What it does: You design; Gemini flags failure risks
Strong at: Gemini changes nothing in your plan
Limit: Flags may miss practical snags; your judgement decides
Free plan: Yes, limited