Simple-Email-Validator

Introduction

No API's, no limits.

This Python script checks the validity of email addresses in a CSV file. The validation process includes syntax checking, domain validation, SMTP validation, SMTP server status checking, and catch-all checking.

The results, including a score and confidence level for each email address, are written to a new CSV file.

Prerequisites

This script requires Python 3.7 or higher, and the following Python libraries:

• re
• dns.resolver
• smtplib
• pandas
• tqdm
• email.utils
• time
• sys

Installation

You can install the required libraries using pip within the same directory:

pip install -r requirements.txt

Usage

Run the script from the command line, passing the path to the CSV file as a parameter:

python simple.py /path/to/file.csv

The script will validate the email addresses in the file and write the results to a new CSV file in the same location as the input file. The new file will have the same name as the input file, but with "results" and a timestamp appended to the name.

Output

The output CSV file includes the following columns:

• Email: The email address
• Syntax: Whether the syntax of the email address is valid
• Domain: Whether the domain of the email address is valid
• SMTP: Whether the SMTP check passed
• SMTP Server Status: Whether the SMTP server is up
• Catch-All: Whether the email address is set to catch-all
• Score: A score between 0 and 1 indicating the likelihood that the email address is valid
• Validation Time (s): The time taken to validate the email address
• Confidence: A confidence level (Low, Slight, Moderate, High, Excellent, Perfect) based on the score

Note

This script includes a small delay between SMTP verifications to avoid being blocked by the SMTP server.