Thanks for that info and choosing the Apple Support Communities. Based on what you stated, it seems you are experiencing issues with the Mail app on your Mac. To help with this issue, please follow the steps in this resource, restart your Mac and test your issue again.
Thanks for replying, sirin_zarin, and that additional info, it really helps! If you need further help with this issue in the future, feel free to reply to this thread and we will be happy to help you further. Have a great day and thanks for using the Apple Support Communities!
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
mail | black window on mail app when select "by talking"
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.