IPWorks OpenPGP 2020 macOS Edition

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PFileMailer Module

Properties   Methods   Events   Configuration Settings   Errors  

The PFileMailer component is used to send encrypted and/or signed plaintext-formatted emails, with any attachments, using OpenPGP.




The PFileMailer class offers an easy-to-use interface: you can send an OpenPGP signed and encrypted message using the PSMTP class by calling the Encrypt, Sign, and SignAndEncrypt methods. Additionally, it enables you to create messages bound for multiple recipients with different keys, simultaneously encrypt and compress with the most popular compression algorithms, and control other aspects such as the encrypting algorithm.

Construct the Message

To begin specify common email properties such as SendTo, Cc, BCc, Subject, and MessageText. Connection information is specified by setting MailServer and MailPort.


To sign a message specify a recipient key using the Key* properties. For instance:

PFileMailer1.KeyCount = 1
PFileMailer1.KeyKeyring(0) = "c:\my_keyring_dir"

PFileMailer1.KeyUserId(0) = "sender@nsoftware.com"
PFileMailer1.KeyPassphrase(0) = "password"
The specified private key will be used to sign the message when Sign is called.


To encrypt a message specify a recipient key using the RecipientKey* properties. For instance:

PFileMailer1.RecipientKeyCount = 1
PFileMailer1.RecipientKeyKeyring(0) = "c:\my_keyring_dir"
PFileMailer1.RecipientKeyUserId(0) = "recipient@nsoftware.com"
The specified public key will be used to encrypt the message when Encrypt is called.

Sign and Encrypt

To sign and encrypt a message in one step call SignAndEncrypt. The message will be signed with the private keys specified in the Key* properties and encrypted with the public keys defined in the RecipientKeys* properties.

Add Attachments

To add attachments simply call AddAttachment. The ProcessAttachments setting specifies whether attachments are also encrypted and signed.


Call the Send method once the necessary properties have been set for each recipient.

Property List

The following is the full list of the properties of the module with short descriptions. Click on the links for further details.

AttachmentsThe paths of files to attach to the message.
AuthMechanismUsed when connecting to the mail server.
BCcA comma separated list of addresses for blind carbon copies (optional).
CcA comma separated list of addresses for carbon copies (optional).
CommandUsed to send additional commands directly to the server.
CompressionMethodThe compression algorithm used.
ConnectedShows whether the component is connected.
DeliveryNotificationToEmail address to send to which to send a delivery notification.
EncryptingAlgorithmThe encryption algorithm used when encrypting.
FirewallA set of properties related to firewall access.
FromThe email address of the sender (required).
IdleThe current status of the component.
ImportanceImportance of the mail message (optional).
KeysA collection of keys used for cryptographic operations.
LastReplyThe last reply from the server.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
MailPortThe server port for SMTP (default 25).
MailServerThe name or address of a mail server (mail relay).
MessageDateDate of the mail message (optional).
MessageIdThe Message Identifier for the message.
MessageRecipientsThe collection of recipients of the message.
MessageTextThe full text of the message to send (without headers).
OtherHeadersAn RFC 822 compliant string consisting of extra headers.
PasswordA password for logon to the MailServer .
PriorityPriority of the mail message (optional).
ReadReceiptToEmail address to send a read receipt to.
RecipientKeysThe collection of keys belonging to the recipient of the message.
ReplyToA mail address to which to reply (optional).
SendToA comma separated list of addresses for destinations (required).
SensitivitySensitivity of the mail message (optional).
SigningAlgorithmThe signature hash algorithm used when signing.
SSLAcceptServerCertEncodedThe certificate (PEM/base64 encoded).
SSLCertEncodedThe certificate (PEM/base64 encoded).
SSLCertStoreThe name of the certificate store for the client certificate.
SSLCertStorePasswordIf the certificate store is of a type that requires a password, this property is used to specify that password in order to open the certificate store.
SSLCertStoreTypeThe type of certificate store for this certificate.
SSLCertSubjectThe subject of the certificate used for client authentication.
SSLEnabledWhether TLS/SSL is enabled.
SSLServerCertEncodedThe certificate (PEM/base64 encoded).
SSLStartModeDetermines how the component starts the SSL negotiation.
SubjectThe subject of the mail message (optional).
TimeoutA timeout for the component.
UserA user identifier to login as in the MailServer .

Method List

The following is the full list of the methods of the module with short descriptions. Click on the links for further details.

AddAttachmentAdds FileName as an attachment.
ConfigSets or retrieves a configuration setting.
ConnectConnects to the mail relay and sends the SMTP HELO command.
DisconnectDisconnects from the SMTP server.
DoEventsProcesses events from the internal message queue.
EncryptEncrypts the message.
InterruptInterrupt the current method.
ProcessQueueSends the messages which have previously been queued into QueueDir .
QueueQueues the message into QueueDir .
ResetHeadersResets all the message headers to empty.
SendSends the current message and MIME encoded attachment.
SignSigns the message.
SignAndEncryptSigns and encrypts the current message.

Event List

The following is the full list of the events fired by the module with short descriptions. Click on the links for further details.

ConnectionStatusFired to indicate changes in connection state.
EndTransferFired when the message text completes transferring.
ErrorInformation about errors during data delivery.
KeyPassphraseFired if the passphrase of current key is incorrect or empty.
PITrailTraces the commands sent to the mail server, and the respective replies.
ProgressFired as progress is made.
SSLServerAuthenticationFired after the server presents its certificate to the client.
SSLStatusShows the progress of the secure connection.
StartTransferFired when the message text starts transferring.
StatusShows the progress of the operation.
TransferFired while the message text gets transferred to MailServer .

Configuration Settings

The following is a list of configuration settings for the module with short descriptions. Click on the links for further details.

ClearSignatureSpecifies whether or not to create a cleartext signature.
CommentThe OpenPGP message comment.
CompressionLevelThe level of compression used.
EnsureValidDSASignatureHashAlgorithmWhether or not to select a suitable signature hash algorithm automatically.
LogLevelSpecifies the level of detail that is logged.
ProcessAttachmentsWhether or not to process attachments.
SymmetricPassphraseThe password used for symmetric encryption or decryption.
VersionHeaderThe Version header value in the ASCII armored OpenPGP message.
AttachmentEncoding[index]Content-Transfer-Encoding for attached file (at index).
AttachmentText[index]Add the text into the attachment at the specified index.
AttachmentType[index]Content-type for attached file (at index).
CharsetWhen set, the charset Content-Type attribute will be added using the specified value.
MessageTextEncodingWhen set, the MessageText value will be encoded using the specified encoding.
OverrideFilenameIf set to true, the AttachmentName property value will be used to set the MIME part Filename attribute.
TempFilePathIf set, the temporary files created during message creation will be put in the path specified.
UseTempFileIf set, the component uses temporary files when generating messages.
AllowEmptyToIf set to True, then the SendTo property is not required.
AuthorizationIdentityThe value to use as the authorization identity when SASL authentication is used.
CharsetWhen set, the message headers will be encoded using the specified Charset.
HelloThe argument for HELO (herald) command to the server (defaults to local host name).
KeepQueueIf set to True, queued files are not deleted after a successful send.
MaxHeaderLengthMaximum length for headers to avoid line folding (default 80).
MessageHeadersStringString representation of RFC822-encoded headers of the message.
MessageIdAlgorithmDetermines the algorithm used to hash the random MessageId.
OtherHeadersAn RFC 822 compliant string consisting of extra headers.
ReturnPathSets the Return-Path to be used for sending email.
SendRSETWhether to send RSET command.
StopOnBccErrorsInstructs the component to stop sending the message if the server does not acknowledge any of the BCCs.
StopOnCcErrorsInstructs the component to stop sending the message if the server does not acknowledge any of the CCs.
StopOnToErrorsInstructs the component to stop sending the message if the server does not acknowledge any of the TOs.
TransferTextThe current portion of the message being sent.
ConnectionTimeoutSets a separate timeout value for establishing a connection.
FirewallAutoDetectTells the component whether or not to automatically detect and use firewall system settings, if available.
FirewallHostName or IP address of firewall (optional).
FirewallPasswordPassword to be used if authentication is to be used when connecting through the firewall.
FirewallPortThe TCP port for the FirewallHost;.
FirewallTypeDetermines the type of firewall to connect through.
FirewallUserA user name if authentication is to be used connecting through a firewall.
KeepAliveIntervalThe retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveTimeThe inactivity time in milliseconds before a TCP keep-alive packet is sent.
LingerWhen set to True, connections are terminated gracefully.
LingerTimeTime in seconds to have the connection linger.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the component binds.
MaxLineLengthThe maximum amount of data to accumulate when no EOL is found.
MaxTransferRateThe transfer rate limit in bytes per second.
ProxyExceptionsListA semicolon separated list of hosts and IPs to bypass when using a proxy.
TCPKeepAliveDetermines whether or not the keep alive socket option is enabled.
TcpNoDelayWhether or not to delay when sending packets.
UseIPv6Whether to use IPv6.
LogSSLPacketsControls whether SSL packets are logged when using the internal security API.
OpenSSLCADirThe path to a directory containing CA certificates.
OpenSSLCAFileName of the file containing the list of CA's trusted by your application.
OpenSSLCipherListA string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedDataThe data to seed the pseudo random number generator (PRNG).
ReuseSSLSessionDetermines if the SSL session is reused.
SSLCACertsA newline separated list of CA certificate to use during SSL client authentication.
SSLCheckCRLWhether to check the Certificate Revocation List for the server certificate.
SSLCipherStrengthThe minimum cipher strength used for bulk encryption.
SSLEnabledCipherSuitesThe cipher suite to be used in an SSL negotiation.
SSLEnabledProtocolsUsed to enable/disable the supported security protocols.
SSLEnableRenegotiationWhether the renegotiation_info SSL extension is supported.
SSLIncludeCertChainWhether the entire certificate chain is included in the SSLServerAuthentication event.
SSLProviderThe name of the security provider to use.
SSLSecurityFlagsFlags that control certificate verification.
TLS12SignatureAlgorithmsDefines the allowed TLS 1.2 signature algorithms when UseInternalSecurityAPI is True.
TLS12SupportedGroupsThe supported groups for ECC.
TLS13KeyShareGroupsThe groups for which to pregenerate key shares.
TLS13SignatureAlgorithmsThe allowed certificate signature algorithms.
TLS13SupportedGroupsThe supported groups for (EC)DHE key exchange.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
UseInternalSecurityAPITells the component whether or not to use the system security libraries or an internal implementation.

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IPWorks OpenPGP 2020 macOS Edition - Version 20.0 [Build 7941]