Hi @Pranav Vatsavai (TATA CONSULTANCY SERVICES LTD) ,
Welcome to our forum!
Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client and we know little about Cosmic. If you want to recall an email in Outlook desktop client, it's suggested that you could refer to this official article and try the steps: Recall or replace a sent email.
If it is not your case and you want to recall an email in Cosmic, it's suggested that you could contact the support of Cosmic for more professional suggestions. Thanks for your kindly understanding and support!
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