Based on the description you’re facing issue sending email from the Excel 2013.
Are you able to work with other features and functions in Excel and are you able to send emails from other Office applications?
Refer the suggestions in the following KB article to troubleshoot Excel Crash and check if it helps you in resolving this issue:
Reply to us with the results to help you better.
Was this reply helpful?
Sorry this didn't help.
Great! Thanks for your feedback.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.
Thanks for your feedback.