DeBounce accepts TXT and CSV files. The maximum file size is 20MB and the maximum allowed emails per file are 200,000.
If you are going to upload a TXT file, this file must include only emails, only one email per line with no extra characters such as white spaces or , and ; sings.
If you are going to upload a CSV file, your CSV files must include the email column and the email addresses must be on the same column. It can include other columns such as Names, etc. Our tool keeps the extra columns and will be available again in the validation report.