Develop a high-performance tool for mass verification of email address existence considering email provider restrictions.
Email syntax validation according to RFC standard.
Validation via SMTP (without sending emails, only the
RCPT TOcommand).Support for multithreaded processing to speed up verification.
Generation of email addresses within a specified range (format:
XXXXX@yyyy).Logging of results:
Valid addresses.
Invalid addresses (syntax/SMTP rejection).
Connection errors.
Limiting request frequency to a single SMTP server to prevent blocking.
24/7 mode with automatic restart in case of failures.
Running on a server/VPS with a white IP.
Additionally, this tool should be used to verify approximately 1 million addresses.
It can be made simpler through a web input on a page in the browser.
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7 days490 USD
682 6 0 7 days490 USD
An interesting task that is quite conveniently solved with Python
Stack Django + Celery + Redis + Postgres
You can create a web interface for forming checklists, viewing task statuses, and results
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7 days601 USD
95878 1272 1 10 7 days601 USD
Hello. I have extensive experience with React/Node.js. Ready to collaborate
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15 days557 USD
13013 67 0 15 days557 USD
Hello! I will complete your task quickly and efficiently.
My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Write to me, I will start working today. I will be glad to cooperate with you!
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2 days278 USD
406 2 0 2 days278 USD
I am ready to implement the entire tool in Python with the following features:
• Validation by RFC (syntax) and SMTP validation (RCPT TO without sending emails)
• Asynchronous/multithreaded processing based on asyncio and aiohttp for maximum speed
• Rate limiting for each SMTP server to avoid blocking
• Generation of addresses based on the pattern XXXXX@domain
• Logging in CSV/JSON:
• valid
• invalid (syntax/SMTP rejection)
• connection errors
… • Running as a daemon (systemd) with automatic restart on crashes
Development time: ~2 - 3 days
Cost: $300
Ready to start immediately after clarifying domains and server access.
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