2. Disable animation. Go to File>Advanced>Under Display check "Disable hardware graphics acceleration" and uncheck "Use animation when expanding conversations and groups"

3. Disable Outlook Add-ins. File>Options>Add-Ins>Select COM Add-Ins then Go

Disable unnecessary Add-Ins.

Below is a recommended list of add-ins to disable, depending on preference you can disable more.

Acrobat PDFMaker Office COM Addin - Convert to PDF

BCSAddin.Connect - disable

Business.Connectivity.Services Add-In - disable

Cch.Pfx.OfficeAddin.Core.Outlook - Pfx Document

Conversation History Add-in for Microsoft Office 2013 - disable

DYMO LabelWriter Add-In - disable

GoToMeeting Outlook COM Addin - Go To Meeting

Micrsoft Exchange Add-In - disable

Microsoft SharePoint Server Colleague Import Add-In - disable

Microsoft VBA for Outlook Addin - disable

OneNote Notes about Outlook items - disable

Outlook Social Connector - disable

Redemption Helper Outlook Extention - disable

ShoreTel CAS Connection Add-In - ShoreTel

ShoreTel Contacts Upload Add-In - ShoreTel Contacts

ShoreTel Voice Mail Intergration Add-In - ShoreTel Voice mails

Skype Meeting Add-In for Microsoft Office 2013 - disable

Windows Search Email Indexer - disable

WP Outlook AddIn - Engagement

4. Bold unread messages. Click on the View Ribbon>Change view>Manage View...

Under current view settings click modify

In the Advanced View Settings window click Conditional Formatting...

Select unread messages then Font...

Select a bold font then hit OK then OK for the other windows you opened.