- SPECIAL-USE - Used to list mailboxes with special-use attributes.
- UIDPLUS - Checked when determining if the server supports the MOVE command with UIDs.
- MOVE - Used to check if the server supports the MOVE command directly.
- IDLE - Allows the server to notify the client of new messages or changes in real-time without the need for the client to poll the server.
- LITERAL+ - Allows the use of literals in commands without requiring the client to wait for the server's continuation response.
- COMPRESS=DEFLATE - Enables compression of data sent between the client and server to reduce bandwidth usage.
- QUOTA - Provides support for managing and querying storage quotas on the server.
- NAMESPACE - Allows the client to discover the namespaces available on the server, which can be useful for clients that need to manage multiple mailboxes.
- ACL - Provides support for Access Control Lists, allowing clients to manage permissions on mailboxes.
- SORT - Allows the client to request that the server sort messages based on various criteria, such as date, subject, or sender.
- THREAD - Allows the client to request that the server return messages in a threaded format, which can be useful for displaying conversations.
- X-GM-EXT-1 - A Google-specific extension that provides additional capabilities for interacting with Gmail, such as accessing labels and message IDs.
- CAPABILITY - Fetch server capabilities.
- LOGIN - Login to the IMAP server.
- LOGOUT - Logout from the IMAP server.
- SELECT - Select a mailbox.
- CLOSE - Close the currently selected mailbox.
- LIST - List mailboxes.
- LIST (SPECIAL-USE) - List mailboxes with special-use attributes.
- COPY - Copy messages to another mailbox.
- MOVE - Move messages to another mailbox.
- EXPUNGE - Expunge deleted messages from the selected mailbox.
- UNSELECT - Allows the client to unselect the current mailbox without selecting a new one.
- FETCH - Fetch headers for messages.
- FETCH (HEADERS) - Fetch headers for messages.
- FETCH (PART) - Fetch a specific part of a message.
- FETCH (STRUCTURE) - Fetch the structure of a message.
- STORE - Store flags on messages.
- STORE (ADD) - Add flags to messages.
- STORE (REMOVE) - Remove flags from messages.
- SEARCH - Allows the client to search for messages based on various criteria.
- ESEARCH - Extended search command that provides additional search capabilities.
- STARTTLS - Start TLS encryption (used internally in the
startTLS
function).
- ENABLE - Allows the client to enable server-side extensions.
- ID - Allows the client to identify itself to the server.
- CONDSTORE - Provides support for conditional STORE operations.
- QRESYNC - Provides support for quick resynchronization of the mailbox.
- METADATA - Allows the client to retrieve and store metadata associated with mailboxes.
- LIST-EXTENDED - Extended LIST command that provides additional listing capabilities.
- AUTH PLAIN - Used for PLAIN authentication.
- AUTH LOGIN - Used for LOGIN authentication.
- STARTTLS - Used to initiate TLS encryption.
- EHLO - Extended Hello command to fetch server capabilities.
- DSN - Delivery Status Notification, allows the client to request delivery status notifications for sent emails.
- ENHANCEDSTATUSCODES - Provides enhanced status codes for more detailed error reporting.
- BINARYMIME - Allows the transmission of binary MIME messages without the need for encoding.
- SIZE - Allows the client to specify the size of the message.
- PIPELINING - Allows the client to send multiple commands without waiting for a response.
- 8BITMIME - Allows the transmission of 8-bit MIME messages.
- CHUNKING - Allows the client to send large messages in chunks.
- AUTH CRAM-MD5 - Allows the client to authenticate using the CRAM-MD5 method.
- AUTH DIGEST-MD5 - Allows the client to authenticate using the DIGEST-MD5 method.
- EHLO - Fetch server capabilities.
- STARTTLS - Start TLS encryption.
- AUTH PLAIN - Authenticate using PLAIN method.
- AUTH LOGIN - Authenticate using LOGIN method.
- QUIT - Disconnect from the server.
- MAIL FROM - Specify the sender's email address.
- RCPT TO - Specify the recipient's email address.
- DATA - Initiate the transfer of the email data.
- SEND CONTENT - Send the actual email content.