From Tencent Enterprise Mail to Zoho Mail: Final Selection After a Failed Sending Test

🧭 1. Background: Why Rebuild the Corporate Email System

While preparing to apply for the Cloudflare Affiliate Program, I found that it requires:

Using a corporate domain email address (@shuijingwanwq.com)

Therefore, I decided to set up a corporate email system using my existing domain:

👉 shuijingwanwq.com

🧱 2. Initial Solution: Using Tencent Enterprise Email

My initial choice was:

👉 Tencent Enterprise Email

The reasons were simple:

• Stable for domestic use
• Simple configuration
• Natural compatibility with DNS (MX)

✔ DNS Configuration Status

MX records were configured:

mxbiz1.qq.commxbiz2.qq.com

mxbiz1.qq.commxbiz2.qq.com

And I completed:

• ✔ Domain verification (CNAME)
• ✔ Account creation (admin@shuijingwanwq.com)
• ✔ Normal email receiving

🧪 3. Key Issue Arises: Email Sending Failure

A critical issue emerged during testing:

❗ Test Results

📌 Sending Status Screenshot

🧠 4. Troubleshooting Process

Through troubleshooting, I confirmed:

✔ Ruled Out:

• Domain not verified ❌ (Already successful)
• MX configuration error ❌ (Receiving works normally)
• DNS not effective ❌

❗ Root Cause Identified:

❗ “Sending channel not fully enabled / Unstable international delivery”

🔍 5. Summary of Symptoms

Tencent Enterprise Email exhibited the following typical behavior:

• ✔ Domestic emails (163) normal
• ❌ Gmail emails failed
• ✔ Email receiving normal
• ❌ Outbound sending unstable

📉 6. Conclusion: Tencent Enterprise Email is Unsuitable for Current Goals

Although Tencent Enterprise Email is functional, it presents issues in the following scenarios:

• Overseas affiliate marketing
• Cloudflare / SaaS registrations
• Communication with outsourced clients

🚀 7. Final Solution: Switching to Zoho Mail

I ultimately decided to adopt:

👉 Zoho Mail

Reasons:

• Stable international email delivery
• High Gmail compatibility
• Better suited for overseas business ecosystems
• Easier to pass affiliate platform reviews

🧩 8. Final Email Architecture Design

The future email system will be structured as follows:

• contact@shuijingwanwq.com
• affiliate@shuijingwanwq.com
• cloudflare@shuijingwanwq.com

Separated by use case:

• External partnerships
• Affiliate marketing
• Platform registrations