Complete setup for Apple iCloud Mail (@icloud.com / @me.com / @mac.com) — first enable two-factor authentication (2FA), then generate a 16-char App-Specific Password (xxxx-xxxx-xxxx-xxxx format) at the Apple ID site. Paste it into the Laifaxin password field (not your Apple ID main password).
Complete configuration flow for Google Workspace — uses standard Gmail servers, requires the admin to first authorize the feature in the console, then the user enables 2-Step Verification and generates a 16-digit app-specific password. When binding, fill in the app password, not the Google main account password. The top choice for foreign trade outreach.
Mail.ru (Russia's largest mailbox, under VK Group) complete setup — @mail.ru / @inbox.ru / @bk.ru / @list.ru share one backend, generate a 16-char App-Specific Password in Password & Security (2FA may be required on first use). Essential for China-Russia trade.
Complete configuration flow for Zoho Mail — note the Free plan does not support IMAP/SMTP; binding a third-party client requires a paid plan. Setup spans 2 sites: enable IMAP Access in Zoho Mail, and generate a 16-digit app-specific password in the Zoho Account Center. When binding, fill in the app password, not the main password.