I have used a formula like below, means when there is sheetname soon after the ‘=’ sign then additional symbol ‘@’ comes it self while exporting the excel.
e.g:
string strFormula = "IFERROR(IF(MATCH(1,(D1=‘sheet name’!…... veera11693 January 6, 2024, 5:43am 7 Hi @John , Replying...8 KB) amjad.sahi January 6, 2024, 11:19am 8 @veera11693 , @Phalguna_Y...