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Fiverr Pro
English
$
USD
I will build an enterprise email validation cli tool
Valentyn S
About this gig
Boost email campaign success and protect sender reputation with high-precision validation! This service enables you to:
* Reduce bounce rates by verifying mailbox existence via SMTP without sending emails (anti-spam compliant)
* Ensure domain health with MX record checks and syntax validation (RFC 5322 standard)
* Process 10,000+ emails/hour using multithreading and proxy support
* Eliminate wasted resources by filtering role-based (e.g., support@) and disposable addresses
* Maintain compliance with GDPR/CCPA through secure data handling
Key advantages for your business:
* Prevent blacklisting with <1% bounce rates
* Save costs by removing invalid addresses before campaigns
* Resume large jobs mid-process to avoid rework
* Use your proxies to bypass IP blocks
* Receive clear reports (valid/invalid/catch-all) for confident list cleaning
Built with enterprise-grade Go technology for marketers and developers prioritizing deliverability and ROI.
Get to know Valentyn S
Valentyn S
Expert: Go, Java, low code, AI, Vibe Coding, Data, scalable solutions
- FromUkraine
- Member sinceMar 2025
Languages
English, Ukrainian
I build AI-powered and vibe-coded solutions that combine Go, Java, and low-code platforms to deliver clean, scalable apps and backends. I help you:
- Build fast MVPs with AI and low-code
- Develop robust APIs and microservices
- Automate workflows and integrate AI tools
- Optimize performance
- Design scalable, efficient databases
- Create clean, maintainable code with modern practices
- Deliver rapid prototypes and production-ready systems
- Web scraping, data extraction, data mining, data collection
- Data transformation and analysis
- Build desktop & mobile apps
My Portfolio
FAQ
Do I need technical knowledge to use these tools?
Some basic command-line familiarity is helpful, but I provide detailed documentation with step-by-step instructions to guide you.
Can I use my proxies?
Yes! Provide proxy details in a config file.
Can the tool handle large volumes of emails?
Yes, the tool is designed for large volumes (tens of thousands of emails) and supports concurrent processing and rate limiting for optimal performance.
Do I need to send actual emails for verification?
No, the tool performs email box existence checks via SMTP ping without sending actual emails, ensuring no spam is generated and your sender reputation is preserved.
Does the program comply with data protection laws?
Yes, the tool adheres to GDPR, CCPA, and LGPD by securely handling data and avoiding spam traps.
How accurate is the program validation?
The tool validation achieves over 95% accuracy through advanced SMTP verification, domain checks, and pattern analysis.
What file formats does the program accept?
The program accepts TXT or CSV files with email addresses. CSV files can include headers and additional columns (e.g., name, company).
Do you offer maintenance or updates after delivery?
Yes! You receive 7 days of free support for any questions about your instance of the program.
Can I run this tool on a schedule?
Yes, all packages include the program, which can be scheduled using standard scheduling tools, such as cron or the Windows Task Scheduler. The Premium package contains more robust scheduling features and integration support. I can also set up Docker containerization for easy deployment.
Will there be a graphical user interface (GUI)?
If I get enough requests for developing, I will make it.
