Docs
ZeroBounce accepts the most common file delimiters/separators, including commas, colons, or pipes. However, there may be instances where your uploaded file uses an unsupported file delimiter type. These are referred to as “custom delimiters/separators.”
If you experience an error with your file delimiter, or if your file delimiter does not match any listed in our dropdown, please update your file with one of the supported file delimiter types.
When uploading your list, you must use one of the following file delimiters:
If you attempt to separate your file data with a different file delimiter, the email verifier will regard it as a single-column file.
Alternatively, using spreadsheet software such as Microsoft Excel or Google Sheets, you can select a new separator using these instructions:


This will automatically split your file data into their respective columns using the correct file delimiter.
Please reattempt your upload after you update your file with one of the supported file delimiters.
If you continue to experience errors with your file delimiter while uploading, please contact ZeroBounce support. The team is available 24/7/365 and can swiftly help you resolve file upload issues.
To contact support via live chat, click the "Chat" button in the bottom-right corner of any ZeroBounce website page.
Alternatively, you can email support@zerobounce.net to notify the team of any outstanding issues with your experience.
What file formats does ZeroBounce accept?
Why did I receive the “too many invalid emails found” error?