OutboxBuddy
OutboxBuddy is a companion software for Pocket Outlook. Features: Automatic insertion of a signature for outgoing mail. You can define a different signature for each mail account, including the ActiveSync Outbox. Automatic addition of a default recipient. For example, you can BCC to yourself a copy of every email sent with the PocketPC or Smartphone.

SMTP Manager
SMTP Manager allows you to switch between your outgoing email addresses quickly and easily. If you are on the road or move between ISP's often, SMTP Manager is the program for you. Just choose the Pocket Inbox account and the SMTP server you want to use. You can also apply this address to all your Pocket Inbox accounts. SMTP Manager allows you to change from the default port 25 if needed.