Hi, What has happened is in your Apple Contacts App on your Mac, there is now a Contact called "Evernote . . . ." 1. Launch Contacts 2. Search for "Evernote" 3. Delete the contact 4. Quit and Restart your computer. 5. Relaunch Mail * If your Contacts are synced with iCloud, then you have to turn off Syncing Contacts with iCloud before you delete the Contact. Then Restart your computer and turn iCloud Contacts back on. Hope that helps. On occasion this has happened to me where another word has taken over in my mail program in the "To' column. It's always a contact that has to be removed.