Microsoft Excel cannot handle cell data that exceeds 32 KB. Excel will split any email that exceeds the data size limit into smaller chunks and spread them across several columns. As a result, columns will contain incorrect data in certain rows.
Note that Excel does not recognize CSV files using the UTF-8 text encoding unless the data is proceeded with a byte order mark (BOM) encoding signature. If you open a UTF-8 encoded CSV file that lacks a BOM in Excel, all special extended characters will be rendered incorrectly.
If you experience any issues, please don't hesitate to contact us by raising a ticket.