Following are the steps to Validate the Email Address or multiple Email Addresses at the same time.
Using SysTools Email Address Checker
After, uploading the .csv file. You need to click on Validate Emails or Clear button if you want to reupload.
Here, you can preview the emails validation via Syntax, Domain, MailServer, and Deliverable. Also, Click on Export to CSV button to view the output in CSV format.
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