Question 1

What is Smart Email Verifier?

Accepted Answer

Smart Email Verifier is a professional tool that helps you clean your email lists. It finds valid, invalid, and temporary email addresses so your emails actually reach your customers.

Question 2

Who should use Smart Email Verifier?

Accepted Answer

• Email Marketers - Clean lists before campaigns
• Businesses - Validate customer/lead emails
• Developers - Integrate email verification into applications
• Agencies - Offer email verification services to clients
• E-commerce - Validate customer email addresses

Question 3

What makes Smart Email Verifier different from other solutions?

Accepted Answer

• Self-hosted - Complete control over your data and infrastructure
• Multi-layer verification - Uses 4+ verification methods for accuracy
• Real-time processing - Background workers for large lists
• Advanced detection - Identifies disposable, role-based, and business accounts
• Enterprise security - Token authentication and rate limiting
• Modern UI - React-based dashboard with real-time updates

Question 4

How much does Smart Email Verifier cost?

Accepted Answer

Smart Email Verifier is a one-time purchase with no recurring fees. You own the software and can use it indefinitely on your server.

Question 5

What's included in the purchase?

Accepted Answer

• Complete source code
• Lifetime updates and bug fixes
• Installation support
• Documentation and guides
• No usage limits or restrictions

Question 6

Do I need to pay for hosting?

Accepted Answer

Yes, you'll need to host the application on your own server or VPS. We recommend providers that allow port 25 access (see server requirements below).

Question 7

Can I use it on multiple domains?

Accepted Answer

Each license is valid for one domain/IP combination. For multiple domains, you'll need separate licenses.

Question 8

What are the server requirements?

Accepted Answer

• Node.js 18 or higher
• MariaDB 10.5 or higher (MySQL 8.0+ also supported)
• Port 25 Access - Critical for SMTP verification
• 2GB+ RAM (4GB recommended for large lists)
• 10GB+ Storage (depends on email list sizes)
• Linux/Unix operating system

Question 9

Which hosting providers do you recommend?

Accepted Answer

✅ Recommended (Port 25 Allowed):
• Vsys.host
• OVH.com
• Private-hosting.eu
• Contabo.com
• DigitalOcean (with port 25 request)
• Linode (with port 25 request)

❌ Avoid (Port 25 Restricted):
• AWS (Amazon Web Services)
• Google Cloud Platform
• Microsoft Azure
• Most shared hosting providers

Question 10

Why is port 25 access important?

Accepted Answer

Port 25 is essential for SMTP verification - the core method used to check if email addresses exist. Without port 25 access, the verification accuracy drops significantly.

Question 11

Can I run it on shared hosting?

Accepted Answer

No, shared hosting typically doesn't allow port 25 access or Node.js applications. You need a VPS or dedicated server.

Question 12

How difficult is the installation?

Accepted Answer

The installation is straightforward with our step-by-step guide:
1. Upload files to your server
2. Run installation command
3. Configure database
4. Set up license
5. Configure SMTP settings

Question 13

Do I need technical knowledge?

Accepted Answer

Basic server administration knowledge is helpful, but our detailed guides make it accessible for most users.

Question 14

How long does installation take?

Accepted Answer

Typically 1-5 minutes for a complete setup.

Question 15

What if I need help with installation?

Accepted Answer

We provide comprehensive documentation and installation support to help you get started.

Question 16

Why do I need to configure SMTP settings?

Accepted Answer

SMTP configuration is recommended for optimal email verification. The system needs to:
• Connect to email servers to verify addresses
• Send test emails for IMAP verification
• Establish proper authentication with mail servers

Note: While basic SMTP settings are sufficient to get started, proper configuration will significantly improve verification accuracy and reliability.

Question 17

What SMTP settings do I need to configure?

Accepted Answer

1. Basic SMTP Settings:
• SMTP Host: Your email server (e.g., smtp.gmail.com, smtp.yourdomain.com)
• SMTP Port: Usually 587 (TLS) or 465 (SSL)
• Username: Your email address
• Password: Your email password or app password
• Secure: Enable SSL/TLS encryption

2. EHLO/HELO Configuration:
• HELO Domain: Your server's hostname (e.g., verify.yourdomain.com)
• SMTP Command: Choose between EHLO or HELO

3. Email Scanner Settings:
• Scan From Email: The email address used as sender during verification
• SMTP Port: Usually 25 for direct server connections
• Timeout: Connection timeout (default: 15 seconds)
• Batch Size: Number of emails processed per batch (default: 50)

Question 18

How do I get SMTP credentials?

Accepted Answer

⚠️ Important: Free SMTP Providers Are Not Recommended
Free SMTP providers (Gmail, Yahoo, Outlook, etc.) are NOT suitable for email verification because:
• Rate limits - Very low sending limits (100-500 emails/day)
• IP blacklisting risk - High chance of getting blocked
• Poor reputation - Shared IP addresses with other users
• Limited control - Cannot configure proper HELO/rDNS
• Unreliable - Frequent service interruptions

✅ Recommended: Self-Hosted SMTP Solution
For professional email verification, you need self-hosted SMTP:

Option 1: Your Own Domain SMTP
1. Contact your hosting provider for SMTP credentials
2. Use your domain's SMTP settings (e.g., smtp.yourdomain.com)
3. Ensure port 25 is accessible for outbound connections
4. Request PTR record setup from your provider

Option 2: Dedicated SMTP Service
• Amazon SES - Professional SMTP service
• SendGrid - Enterprise email delivery
• Mailgun - Developer-friendly SMTP
• Postmark - Transactional email service

Option 3: VPS with Mail Server
• Install Postfix on your VPS
• Configure proper DNS records (SPF, DKIM, DMARC, PTR)
• Set up professional HELO and authentication
• Monitor reputation and maintain clean IP

Question 19

What verification methods does it use?

Accepted Answer

1. SMTP Probing
• Direct connection to email servers
• Tests if email addresses exist
• Most accurate method for verification

2. DNS MX Record Check
• Validates domain has mail servers
• Quick initial screening
• Identifies non-existent domains

3. IMAP Verification
• Advanced verification for complex cases
• Tests actual email delivery
• Higher accuracy for business emails

4. Provider-Specific APIs
• Microsoft Outlook/365
• Gmail/Google Workspace
• Yahoo Business
• AOL Business
• Mail.ru

5. Catch-all Detection
• Identifies domains that accept all emails
• Prevents false positives
• Business domain analysis

Question 20

What types of emails can it detect?

Accepted Answer

Email Status Types:
• ✅ Valid - Email exists and can receive messages
• ❌ Invalid - Email doesn't exist
• ⚠️ Catch All - Domain accepts all emails
• 🗑️ Disposable - Temporary email address
• 👤 Role Account - info@, support@, admin@, etc.
• 🏢 Business Account - Professional email
• ⏭️ Skipped - Email verification skipped
• ❓ Unknown - Unable to determine status

Account Types:
• Free Account - Gmail, Yahoo, Hotmail, etc.
• Business Account - Company email addresses
• Role Account - Generic business emails
• Disposable Account - Temporary emails

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