I am missing the sizing buttons and pull down menus in Mail. It is a full window of the Mail screen and the wallpaper does not show.
How do I get back the regular view?
I’m missing buttons and pull down menus in Mail
emailmail.app
Related Solutions
You have to customise the toolbar and add the format button.
Drag the format button to the bar:
And when you compose a new message, you can click on the format icon:
And the bar will appear.
Open the Contacts app, select your own email address in the list of contacts. In the menu on top of the screen, go to "Card" -> "Make this my card". Reload calendar. Then it should work, you will get a notification popup with accept/decline buttons. (I just had the same problem, on a Mac running Yosemite) Source
Best Answer
I'm going to assume you're talking about Mail on a Mac.
Since you haven't included a screenshot of the actual window you're talking about, I'll refer you to the fact that you can customise the toolbars in various windows within Mail.
To do this: go to View > Customize Toolbar...
This menu option relates to whatever window type you have active at the time.
For example, if you've got a New Message window active (commandN) and then go to View > Customize Toolbar... you'll be able to customise the toolbar within the New Message window.
Likewise, if you have the Viewer Window active (i.e. the main default window that Mail launches with) and then go to View > Customize Toolbar... you'll be able to customise that toolbar.