A system for converting attachment information into an inline form of a body element in a communication to a mobile device, the system comprising: an inline generator; wherein the inline generator is operable to access an extractor data structure comprising one or more conversion conditions associated with one or more attachment element types, each of the conversion conditions defining a conversion criterion for an associated attachment element type; wherein the inline generator is operable to convert the attachment information into a body element of the communication upon the occurrence of an associated conversion condition associated with an attachment element type of an attachment element comprising the attachment information; wherein the inline generator is further operable to append conversion information to the communication, the conversion information detailing the conversion of the attachment element of an attachment element type into the body element upon the occurrence of an associated conversion condition; and wherein the communication is a Secure Multipurpose Internet Mail Extensions (S/MIME) message, and wherein the inline generator is adapted to: identify an S/MIME entity in the S/MIME message; determine if the S/MIME entity comprises cryptographic information; upon determining that the S/MIME entity comprises cryptographic information, access the extractor data structure to determine if an associated conversion condition has been met; and upon determining that an associated conversion condition has been met, change a content disposition of the S/MIME entity from an attachment type to an inline type to create an inline cryptographic entity. an inline generator; wherein the inline generator is operable to access an extractor data structure comprising one or more conversion conditions associated with one or more attachment element types, each of the conversion conditions defining a conversion criterion for an associated attachment element type; wherein the inline generator is operable to convert the attachment information into a body element of the communication upon the occurrence of an associated conversion condition associated with an attachment element type of an attachment element comprising the attachment information; wherein the inline generator is further operable to append conversion information to the communication, the conversion information detailing the conversion of the attachment element of an attachment element type into the body element upon the occurrence of an associated conversion condition; and wherein the communication is a Secure Multipurpose Internet Mail Extensions (S/MIME) message, and wherein the inline generator is adapted to: identify an S/MIME entity in the S/MIME message; determine if the S/MIME entity comprises cryptographic information; upon determining that the S/MIME entity comprises cryptographic information, access the extractor data structure to determine if an associated conversion condition has been met; and upon determining that an associated conversion condition has been met, change a content disposition of the S/MIME entity from an attachment type to an inline type to create an inline cryptographic entity. identify an S/MIME entity in the S/MIME message; determine if the S/MIME entity comprises cryptographic information; upon determining that the S/MIME entity comprises cryptographic information, access the extractor data structure to determine if an associated conversion condition has been met; and upon determining that an associated conversion condition has been met, change a content disposition of the S/MIME entity from an attachment type to an inline type to create an inline cryptographic entity.