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How do I add address sidebar when writting new mail?

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My address book side bars disappears when I switch from in mail to write. How do I get it back?

My address book side bars disappears when I switch from in mail to write. How do I get it back?

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I don't understand "when I switch from in mail to write".

Are you saying that you can see the address book in the main window? You may have an add-on in place to do this. Or are you starting a message from inside the Address Book? (ugh!)

In the composition window F9 should toggle the Contacts Sidebar on and off.

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Chosen Solution

I don't understand "when I switch from in mail to write".

Are you saying that you can see the address book in the main window? You may have an add-on in place to do this. Or are you starting a message from inside the Address Book? (ugh!)

In the composition window F9 should toggle the Contacts Sidebar on and off.

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Solved thanks