| Horde_Mail_Autoconfig | Object to perform autodetermination of mail configuration parameters. |
| Horde_Mail_Autoconfig_Driver | Abstract class for implementing a mail configuration lookup driver. |
| Horde_Mail_Autoconfig_Driver_Guess | Do simplistic guessing of hosts by appending common server names to domain. |
| Horde_Mail_Autoconfig_Driver_Srv | Perform RFC 6186 DNS SRV record lookups to determine mail configuration. |
| Horde_Mail_Autoconfig_Driver_Thunderbird | Perform configuration lookups based on services provided by Mozilla/Thunderbird. |
| Horde_Mail_Autoconfig_Exception | Base exception object for the Horde_Mail_Autoconfig package. |
| Horde_Mail_Autoconfig_Server | Autoconfigured configuration details for a server. |
| Horde_Mail_Autoconfig_Server_Imap | Autoconfigured configuration details for an IMAP server (RFC 3501). |
| Horde_Mail_Autoconfig_Server_Msa | Autoconfigured configuration details for a message submission agent. |
| Horde_Mail_Autoconfig_Server_Pop3 | Autoconfigured configuration details for a POP3 server (RFC 1939/STD 53). |