The articles listed below contain VBA code samples. Additional code samples are listed at Developer Samples
Set a default 'Do not Deliver before' time
Microsoft Outlook's "Do not deliver before" time defaults to 5 PM and the default cannot be changed. If you always use a different deferral time, you can use a macro to open a new message and set the "Do not deliver before" time automatically.
Bulk Change Contact's FileAs Format to Match Outlook's Default Setting
Use VBA to get the default FileAs format from the registry (and change it, if desired) then update the FileAs format of the contacts in the default contacts folder to match the default format set in Contact Options.
Create Individual Contacts from a Distribution List
How to convert contact groups to individual contacts using Import or a VBA macro.
Forward Messages that were not Replied To
Use a macro to forward Outlook email messages that are waiting for a reply after a number of days.
Import Messages from File System into Outlook Folders
This macro uses the OpenSharedItem method to import messages, appointments, or contacts stored in the Windows File System back into Outlook folders.
Change Item Count on All Folders in a Data File
Use a macro to change the Outlook option to show either the number of unread messages or the total number of messages in a folder.
Apply a View to a Folder using a Macro
How to use an Outlook macro to apply a frequently used view to a folder instead of using the Change View command.
Paste clipboard contents using VBA
Although Outlook VBA doesn't include a paste from clipboard function directly, you can use the MSForms dataobject to transfer the clipboard contents to a string which is then called from VBA.
Use a macro to create a rule to move messages
How to run macros triggers by reminders, update rules using macros, and more.
Run Rules Now using a Macro
How to use a macro to run Outlook's rules on demand or triggered by a reminder.
Script to remove all PST files from a profile
Use a simple VBScript to remove PST files from the default profile when Outlook is closed. Use the script when Outlook is open to remove the PST files from the current profile.
Paste Formatted Text Using VBA
Use Microsoft Word’s ‘use source formatting’ paste command to paste formatted text into an Outlook item body.
Copy Outlook Journal Entries to OneNote
How to use VBA to send Outlook Journal entries to OneNote. For Outlook 2010 and OneNote 2010 only. Use this to convert Journal entries to OneNote.
Outlook VBA: Work with Open Item or Selected Item
How to use Outlook VBA with items that are open in an Inspector window or selected in an Explorer window.
Use VBA to initiate a Send/Receive for a specific account
Is it possible to create a toolbar button that would execute Send/Receive on one specific mail account only? I have send/receive groups, and the pull-down button for all accounts from the toolbar, but that involves some menu-wading. You can use Outlook's SyncObjects property in a macro to trigger a send and receive for a specific Send/Receive Group or Account.