We have a database in a CSV file comma separated, there are 6 columns in this database, the email addresses are in the 3rd column, this database file size is 100MB, sometimes more sometimes less.
We need to know if these email addresses are valid or not.
We need someone to develop an easy user friendly tool for us that run on a Linux server, preferably in PHP which connects and verifies the existence of these email addresses.
The records that have invalid email addresses are records we don't need.
Please explain how much you will charge for developing this tool for us, and explain in detail how this tool will work or how it will be designed and how fast it will verify the email addresses.
Please ask if you have any questions.