A checker is needed for bulk verification of e-mail addresses
101 USD Hello.
I need a checker that will verify email address validity — by list.
What I need:
Upload a list of email addresses (txt or csv)
The script/program checks:
Does the mailbox exist
Does it accept emails (is it valid)
Is there an MX record (optional)
Export: valid / invalid (with separation)
Preferably:
Without the need to send emails (check via SMTP ping, not spam)
Can be without interface — script or command-line tool
If needed — I work with proxies (can provide)
Large volumes (tens of thousands of emails)
Technologies:
Doesn't matter: Python, Node.js, whichever is more convenient. Main thing — stability.
Payment:
Open to suggestions. Payment upon completion.
If you have experience — write, we will discuss details.
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2 days101 USD
2 days101 USD
Hello. I am ready to help create a checker to verify the validity of e-mail addresses. I have experience in developing similar tools, and I can create a script that will check the existence of mailboxes and validity without sending emails.
I can use Python or Node.js depending on your preferences. The script will be able to handle large volumes, as you specified, and will provide an export of valid and invalid addresses. I also know how to work with proxies if necessary.
Let's discuss the details and your requirements. I am confident I can complete the task and offer a stable solution.
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5 days99 USD
386 2 0 5 days99 USD
Hello. I have extensive experience in script development. Ready to cooperate
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2 days101 USD
950 11 0 2 days101 USD
Hello
I think your order is very attractive, and I want to offer my services as an experienced programmer.
I will be glad to discuss the details of your project and get started.
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1 day101 USD
3540 49 5 1 day101 USD
🔹 Ready to complete your task qualitatively and within the agreed deadlines.
🔹 Have experience in similar projects, confirmed in my portfolio.
🔹 Guarantee a responsible approach, attention to detail, and effective communication.
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7 days241 USD
1168 5 0 7 days241 USD
Good day.
Ready to take on your project.
I can assemble automation for email validation for you, using no-code/low-code tools.
Write to me privately, we will discuss all the details and find the right solution for you.
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3 days101 USD
760 6 0 3 days101 USD
I can implement in Python, a console application or with GUI, it is not crucial.
Availability check can be done via SMTP, but disconnect before sending the email, so the user will not receive anything.
You can also try to attach a proxy, but I am not sure if any will work except SOCKS5.
And the output (txt, excel) I will implement according to your preference.
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1 day101 USD
1042 30 1 3 1 day101 USD
Hello Alexey, I will write a checker (console) without sending emails.
Extensive experience in developing software in Python. Write to discuss how you want to save the result. I can add multithreading, proxies.
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2 days101 USD
1980 46 2 2 days101 USD
Good day! My name is Oleksandr, I am a .NET developer with 4 years of commercial experience. I have experience working with large volumes of data, creating console tools for verification, processing, and automation, as well as configuring network requests and working through proxies.
Your task is clear — I can implement an email address checker that will work with lists in TXT or CSV format, verify the existence of the mailbox via SMTP (without sending emails), and check for MX records. Results will be divided into valid and invalid. If needed, proxy support and optimization for large volumes can be provided.
I can implement the solution in C# or Python — depending on what is more convenient for you. I am ready to discuss details and cost. If this collaboration format suits you — write, I will be happy to join the project.
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8 days362 USD
447 8 days362 USD
Did a warming-up service for SMTP servers so they don't end up in spam, and emails are successfully delivered. In general, I am familiar with the nuances of mail server operation. I will complete the order for 15,000 UAH. 4,000 is too little. If you're interested - let's cooperate. I will create a good tool for you with the possibility of quick deployment and custom settings to make it convenient to work.
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1 day101 USD
667 10 0 1 day101 USD
Hello, I developed this email validity checker for myself a couple of months ago, I can tell you the details of this check in private and give it to you
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3 days101 USD
6359 86 0 3 days101 USD
Hello.
I am a NodeJS developer. Ready to take on the project. Write to me, let's discuss.
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Подобные программы есть в сети в открытом доступе. Но такие технологии валидации почтовики давно научились обманывать.
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