The program is designed to work with the following platforms:
- Windows Mobile 2003/SE and Windows Mobile 2005
- For Email Sync between Outlook/Outlook Express and your PDA, you need a PC with at least Windows 98SE and above with Outlook/Outlook Express installed.

The program is designed to work with the following Email protocols and ISPs:
- POP3
- IMAP
- H o t m a i l/M S N
- A O L
- Y a h o o
You can get all your Emails from multiple Email accounts in a single program.

It is designed to be a replacement for Pocket Inbox on Pocket PCs. The program can perform periodic automatic download of Emails.

Gopher King Push Email Client Feature Summary
- Designed for both Pocket PC platforms - Designed for WM 2003/2003SE and WM 2005.
- Get All Emails on your PDA - for all your email from all your accounts (including office, home and mobile device) as well as corporate Email systems.
- Handles Y a h o o, M S N, H o t m a i l and A O L - Gopher King is the only one to handle these special type of Email accounts, even the free web-based Y a h o o Email.
- Supports "push" mail with compatible IMAP servers.
- Supports "auto fill" and "find" function.
- Supports POP/IMAP/SSL-POP/SSL-IMAP/SMTP/SSL-SMTP standard protocols - the user can customize the port used by the remote Email system.
- Choose where your Emails will be stored - you can choose to store your received and sent Emails in the PDA's main memory, or any external storage (e.g., CF, SD cards)
- Synchronize with Outlook or Outlook Express on your PC - you can perform bi-directional synchronization of Emails. Gopher King is the only client that supports synchronization with Outlook Express - download free from https://www.gopherking.com/download/
- Write offline and send all at once - you can receive or synchronize Emails before you go on a trip, reply to them, or write new Emails offline. Then send them out all at once when you are connected
- Automatic send/receive even when the PDA is turned off - you can tell the program to automatically send/receive Emails at your defined intervals even when the device is in sleep mode or has been turned off
- Send attachment support - you can attach files to any outgoing Email on all supported platforms
- Receive attachment support - the program can open your received attachments with the appropriate program directly or save them to your PDA
- Choose your address - reply or send using your primary address - or any address you have
- Multiple signatures support - you can pre-define multiple signatures and select one for any outgoing Email
- Integration with built-in address book - you can look up and add new entries to the built-in address book on your PDA directly within the program
- Outgoing SMTP Relay service provided by Gopher King (extra monthly charge) - you can send outgoing Emails through our SMTP Relay server (service paid separately as a subscription), if your ISP does not allow SMTP relay.
- Standard desktop Email features included - make as read/unread, reply, reply to all, forward, sort; customizable columns in the Email listing; collapsible fields to save screen space, etc.