1. What Are SMTP Credentials?

SMTP credentials consist of:
✅ SMTP Server hosst name – The mail server responsible for sending emails. ( eg. relayxx.mysmtp.com)
✅ SMTP Port – The network port used for email transmission (e.g., 587, 25).
✅ SMTP Username – Usually the email address or an assigned username for authentication.
✅ SMTP Password – The password associated with the SMTP username, ensuring secure access.

These details are used by email clients, applications, or automated systems to send emails reliably.

2. How to Generate SMTP Credentials

Generating SMTP credentials depends on your email provider or SMTP relay service. Below are common steps for setting up SMTP credentials:

🔹 For Custom Domains (e.g., Your Own Mail Server)

1️⃣ Access Your Email Hosting Provider’s Dashboard

• Log into cPanel, Plesk, or any email control panel provided by your hosting service.

2️⃣ Find the SMTP Settings Section

• Look for "Mail Settings", "SMTP Configuration", or similar options.

3️⃣ Create a New Email Account or SMTP User

• If required, generate a new SMTP username and password.

4️⃣ Note Down the SMTP Server and Port Information

🔹 For Third-Party SMTP Providers (e.g., mySMTP)

1️⃣ Sign Up for an SMTP Relay Service

• Go to your chosen provider’s website and create an account.

2️⃣ Generate API Keys or SMTP Login Credentials

• Navigate to SMTP settings and create new credentials.

3️⃣ Verify Your Domain and Authentication Records

• Add SPF, DKIM, and DMARC records to your DNS settings for improved deliverability.
• Use test.smtp.ai to verify setup.

3. Testing Your SMTP Credentials

Before sending emails, test your SMTP setup to avoid errors.

🔹 Use test.smtp.ai to check:
✅ Authentication (SPF, DKIM, DMARC)
✅ SMTP connectivity and response time
✅ Blacklist status

4. Troubleshooting Common SMTP Issues

🚨 Incorrect Username/Password: Double-check credentials and reset if necessary.
🚨 Port Blocked by ISP: Try switching to 587 (TLS)
🚨 Authentication Failed: Ensure SMTP authentication is enabled in email settings.
🚨 Emails Going to Spam: Set up SPF, DKIM, and DMARC records correctly.