Gmail (@gmail.com) · 2-Step Verification + App Password
Gmail = Google's personal mailbox (@gmail.com). Binding it to Laifaxin requires 2 mandatory steps:
| Step | Content | Required |
|---|---|---|
| 1️⃣ Enable 2-Step Verification | Turn on 2FA in Gmail backend, bind phone number | ✅ Required |
| 2️⃣ Generate App-Specific Password | 16-digit standalone password for Laifaxin | ✅ Required |
→ Fill the password field with the 16-digit app password (NOT your Gmail login password), otherwise it fails 100% of the time.
Since 2022, Gmail mandates app-specific passwords for third-party client login. Filling the login password directly → 535 Authentication failed error.
The only alternative is enabling "Less secure app access", which Google has been progressively disabling and is not recommended (high security risk).
1. Server Parameters
| Type | Server Address | SSL Port |
|---|---|---|
| 📥 IMAP (Receive) | imap.gmail.com | 993 |
| 📤 SMTP (Send) | smtp.gmail.com | 465 |
Encryption: SSL / TLS
2. Enable 2-Step Verification
1. Open Google Security Settings
Go directly to Google Security Settings. Once logged in, find 2-Step Verification and click in.
2. Get Started
Click Get started → enter Google login password to verify identity.
3. Enter Phone Number
Enter the phone number to receive verification codes:
Select SMS as the receiving method:
4. Enter Code + Enable
Enter the SMS code → Next → after verification, click Turn on → 2-Step Verification activated.
3. Generate App-Specific Password
Without 2-Step Verification → "App passwords" entry simply doesn't appear. Complete § 2 above first, then come here.
1. Open App Passwords Page
Go directly to Google App Passwords page.
You can also use the search bar at the top of Security settings — search "app passwords":
2. Create Password
Enter app name (e.g. Laifaxin) → click Create:
3. Copy and Save Immediately
Google generates a 16-digit app-specific password (4 groups, each 4 chars, e.g. abcd efgh ijkl mnop).
Once you close the popup, you can never see this password again. Immediately copy and save to a password manager (1Password / Bitwarden) or a text file.
If lost, your only option is to generate a new password — the original is invalidated.
4. Bind in Laifaxin
Go to Laifaxin Email Account and add Gmail:
| Field | Fill With |
|---|---|
| Email address | your@gmail.com |
| Password | ⚠️ Paste the 16-digit app password (remove spaces, NOT the login password!) |
| IMAP server | imap.gmail.com · port 993 · SSL |
| SMTP server | smtp.gmail.com · port 465 · SSL |
After binding succeeds, enable email sync + notifications (see Check New Emails).
📋 Pit-Avoidance Summary
| Pit | Consequence | How to Avoid |
|---|---|---|
| 🔴 Bind with Gmail login password | 535 Authentication failed | Must use 16-digit app-specific password |
| 🔴 Look for App Passwords without 2-Step Verification | "App passwords" entry doesn't appear | Must enable 2-Step Verification first before generating app password |
| 🔴 Forget to save the generated app password | Closed popup, can never see again | Immediately copy to password manager |
| 🟡 Paste app password with spaces | May fail to recognize | Gmail shows the password in 4 groups with spaces — remove spaces before pasting |
| 🟡 IMAP protocol not enabled | IMAP not enabled error | Go to Gmail Settings → Forwarding and POP/IMAP and enable IMAP |
| 🟡 Bulk-send via Gmail | Account suspended / throttled within 24h | Personal mailboxes are for 1-on-1 only; for bulk, use a Quality Channel |
| 🟡 Changed Gmail password / deleted app password | Laifaxin uses stale creds, send fails | Regenerate app password, then re-sync in Laifaxin |
❓ FAQ
Q1 · Got "IMAP not enabled" — what do I do?
Gmail's IMAP protocol is enabled by default, but some accounts require manual enabling. Steps:
| Step | Action |
|---|---|
| 1️⃣ | Go to Gmail Settings → Forwarding and POP/IMAP |
| 2️⃣ | Under "IMAP access" select Enable IMAP |
| 3️⃣ | Click Save Changes |
Q2 · Can I skip the app password and just use my Gmail login password?
❌ Strongly discouraged. Even if technically possible via "Less secure app access" (which Google has been progressively disabling), it's not recommended:
| Dimension | App-specific Password | Login Password |
|---|---|---|
| Security | ✅ Compromise doesn't affect main account | ⚠️ Compromise = main account at risk |
| Invalidation control | ✅ Laifaxin's password can be invalidated alone | ⚠️ Change main password = all apps need reconnection |
| Google policy | ✅ Officially recommended | ⚠️ Deprecated |
Q3 · Can the 16-digit app password be reused?
Yes. The same app password can be bound to multiple clients (e.g. Laifaxin + Foxmail). But we recommend generating one per client:
- Higher security (a compromise of one client doesn't affect others)
- Laifaxin's password leaked → delete it alone on the App Passwords page, other clients unaffected
Q4 · Do I need a VPN to send/receive Gmail?
❌ No. Laifaxin has built-in overseas email nodes — Gmail send/receive goes through Laifaxin's servers, no VPN needed for users.
Q5 · How many emails can Gmail send per day?
⚠️ Gmail's official cap is 500/day, but we strongly discourage hitting the cap — sudden high volume triggers Google's anti-spam system, easily leading to temporary suspension (24-48h) or permanent restriction.
👉 Recommended pacing (warming strategy):
| Stage | Daily Volume | Pacing |
|---|---|---|
| 🐣 Week 1 (newly bound) | Start at 50 | 5-10 min between sends, mimic human behavior |
| 🐤 Weeks 2-4 | 100-200 | Adjust based on reply / bounce rate |
| 🦅 Stable phase (1 month+) | Max 300 | Not recommended to exceed, leave a safety margin |
→ Never "bulk send" at any stage! Bulk = same content sent en masse in short time = 100% triggers risk control.
🚀 For real bulk sending, use a Quality Channel:
- ✅ Doesn't bind your Gmail, no risk of suspension
- ✅ ¥0.007 per email, far cheaper than losing your Gmail main account
- ✅ System auto-throttles + random template variations + multi-account rotation, anti-spam systems can't catch it
Q6 · Lost my app password — what now?
You can't recover the original password (Google only displays it once). Steps:
| Step | Action |
|---|---|
| 1️⃣ | Go to App Passwords page delete old password |
| 2️⃣ | Generate new password |
| 3️⃣ | In Laifaxin Email Account update password + re-verify save |
💡 Learning Tips
| Stage | Tip |
|---|---|
| 🔐 Safeguard the app password | Use a password manager (1Password / Bitwarden); if lost, only regeneration works |
| 📋 One password per client | 1 for Laifaxin, 1 for Foxmail — delete a single one if leaked, others unaffected |
| 🔄 Quarterly review | Go to App Passwords page and delete apps you no longer use |
| ⚙️ Pair with Laifaxin advanced features | Once bound, play with Email Tracking / Templates / Smart Follow-up |
| 🚀 Bulk-send via Quality Channel | Heavy bulk via Gmail will get suspended — always use a Quality Channel (doesn't bind your mailbox) |
| 🆘 Check docs on error | Codes like 535 / IMAP not enabled — see email-account error-code troubleshooting |
📚 Related Features
| Topic | Link | Description |
|---|---|---|
| 📨 Email Account Configuration | email-account | Binding flow + error code troubleshooting table |
| 🏢 Google Business Mail | 201-guge-qiyeyouxiang-google-business-mail | Google Workspace (company domain) |
| 📮 Personal Mailboxes | 100-gerenyouxiang-personal-mailbox | 16 Major Mailboxes Quick Reference |
| 📬 Check New Emails | check-new-emails | After binding, enable sync + notifications |
| 🚀 Email Mass Sending | email-mass-sending | Bulk send via Quality Channel (doesn't bind Gmail) |
| 📊 Email Tracking | email-tracking | See whether Gmail-sent emails got opened |
Scroll to the bottom of this page, scan the support WeChat QR (in footer) for one-on-one help — immediate response during work hours, replies first thing next morning if after hours.
📖 About Gmail (@gmail.com)
What is Gmail?
Gmail is the free email service launched by Google in 2004. As of today, it has over 1.8 billion monthly active users globally — one of the most widely used mailboxes in the world. Gmail provides 15 GB free storage (shared with Google Drive), supports multi-device sync, powerful anti-spam filtering, smart categorization (Promotions / Social / Updates), and more.
Personal Gmail vs Google Workspace (Business)
| Dimension | 👤 Personal Gmail (@gmail.com) | 🏢 Google Workspace (company domain) |
|---|---|---|
| Email suffix | @gmail.com | @yourcompany.com |
| Price | Free | Paid (monthly per user) |
| Storage | 15 GB (shared with Drive) | 30 GB - 5 TB (by plan) |
| Professionalism | Personal-grade | Enterprise-grade, B2B foreign-trade recommended |
| Admin console | None | Yes (manage all employee mailboxes in domain) |
| Custom domain | ❌ | ✅ |
| Configuration | This article | See Google Business Mail |
Why does Gmail require app-specific passwords?
Google security policy evolution:
- 2014: Google introduced "Less secure app access" toggle — main password can log in third-party clients
- May 2022: Google officially disabled this toggle, mandating OAuth 2.0 or app-specific passwords for third-party clients
- Since 2024: all new accounts and most old accounts no longer support less secure apps
→ Now, binding Gmail to any third-party client (Laifaxin / Foxmail / Thunderbird, etc.) requires 2-Step Verification + an app-specific password.
Is Gmail suitable for foreign-trade development?
1-on-1 follow-up / inquiry replies ✅ Suitable (high international acceptance) Bulk cold emails ⚠️ High risk:
| Risk | Description |
|---|---|
| Send volume limits | Gmail's official cap is 500/day, but strongly discouraged from hitting cap: Week 1 start at 50 → gradually scale to max 300 in stable phase; bulk not recommended — high volume of identical content quickly gets suspended |
| Domain reputation | Heavy bulk → triggers anti-spam rules → domain on spam list |
| Account risk | High volume in short time → Google suspects compromise → temporary suspension |
Foreign-trade verdict:
- 🤝 Light precise follow-up → Gmail works
- 🚀 Heavy cold email → use a Quality Channel (doesn't bind Gmail, no risk of suspension)
Laifaxin's built-in overseas email nodes · Gmail access from China made easy
Due to network conditions, direct Gmail connections from China are often unstable. Laifaxin has built-in overseas email nodes:
- ✅ Gmail send/receive goes through Laifaxin servers
- ✅ No need for users to use VPN
- ✅ Receive latency < 1 minute (sync interval recommended 3-5 min)
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