Fast webmail. Session-only. Your inbox, this device.
You’ll leave Lightning Mail, finish 2FA or captcha on Google/Microsoft, then come straight back.
Lightning Mail cannot invent Google or Microsoft login pages. You create a free OAuth app once, paste the IDs here, then Sign in with Google/Microsoft works with full 2FA.
OAuth tokens stay in this server session. App IDs are stored under /data so you don’t re-paste them after a restart.