Abstract: One or more techniques and/or systems are disclosed for providing additional content in an email. An email service can receive the email at an email server. Prior to the email being sent to an email client, metadata for a parameter used to retrieve the additional content is identified and collected. The collected metadata is sent to the email client used by the intended recipient of the email (e.g., on a smart phone). When the user attempts to access the email, the email server can respond by sending script code to the email client, which, in combination with locally stored metadata retrieved from the email, provides the additional content in the email. In this manner, an email regarding a package, for example, can include not only a tracking number but also a status of the delivery of the package, where the status may be different/updated each time the email is accessed.

Abstract: Items of an item set may be stored by an item server (e.g., mail messages comprising a mailbox stored by a mail server) that supports the application of actions, but only within a constraint (e.g., a maximum duration or computational resources consumed by the action). The application of complex actions to large item sets may exceed the constraint if performed in one request. Moreover, the request may be made by a user interface of a user device, but the user interface may stall while interoperating with the item server to perform the action. Instead, a background process may issue a sequence of requests applying the action to respective batches of items within the constraint. This architecture may enable the user interface to remain responsive to the user while the action is performed, and even to be terminated without jeopardizing the completion of the action upon the item set.

Abstract: Items of an item set may be stored by an item server (e.g., mail messages comprising a mailbox stored by a mail server) that supports the application of actions, but only within a constraint (e.g., a maximum duration or computational resources consumed by the action). The application of complex actions to large item sets may exceed the constraint if performed in one request. Moreover, the request may be made by a user interface of a user device, but the user interface may stall while interoperating with the item server to perform the action. Instead, a background process may issue a sequence of requests applying the action to respective batches of items within the constraint. This architecture may enable the user interface to remain responsive to the user while the action is performed, and even to be terminated without jeopardizing the completion of the action upon the item set.

Abstract: Items of an item set may be stored by an item server (e.g., mail messages comprising a mailbox stored by a mail server) that supports the application of actions, but only within a constraint (e.g., a maximum duration or computational resources consumed by the action). The application of complex actions to large item sets may exceed the constraint if performed in one request. Moreover, the request may be made by a user interface of a user device, but the user interface may stall while interoperating with the item server to perform the action. Instead, a background process may issue a sequence of requests applying the action to respective batches of items within the constraint. This architecture may enable the user interface to remain responsive to the user while the action is performed, and even to be terminated without jeopardizing the completion of the action upon the item set.

Abstract: Items of an item set may be stored by an item server (e.g., mail messages comprising a mailbox stored by a mail server) that supports the application of actions, but only within a constraint (e.g., a maximum duration or computational resources consumed by the action). The application of complex actions to large item sets may exceed the constraint if performed in one request. Moreover, the request may be made by a user interface of a user device, but the user interface may stall while interoperating with the item server to perform the action. Instead, a background process may issue a sequence of requests applying the action to respective batches of items within the constraint. This architecture may enable the user interface to remain responsive to the user while the action is performed, and even to be terminated without jeopardizing the completion of the action upon the item set.

Abstract: One or more techniques and/or systems are disclosed for providing additional content in an email. An email service can receive the email at an email server. Prior to the email being sent to an email client, metadata for a parameter used to retrieve the additional content is identified and collected. The collected metadata is sent to the email client used by the intended recipient of the email (e.g., on a smart phone). When the user attempts to access the email, the email server can respond by sending script code to the email client, which, in combination with locally stored metadata retrieved from the email, provides the additional content in the email. In this manner, an email regarding a package, for example, can include not only a tracking number but also a status of the delivery of the package, where the status may be different/updated each time the email is accessed.