1. One or more processor-accessible storage media comprising processor-executable instructions that, when executed, cause a computing device to perform acts comprising: creating an email document by an actionable email documents module, the email document comprising a body, a data collection form, and a linkage identifier, the data collection form comprising at least one block for data population that is associated with a field identifier, the field identifier corresponding to a field of metadata, wherein the linkage identifier maps to the metadata, and the data collection form is in the body of the email document; setting one or more reply email processing options for reply email documents, wherein the one or more reply email processing options comprise a limit to a selectable maximum number of reply email documents eligible for processing; processing a reply email document that comprises the at least one block that is associated with the field identifier, the at least one block populated by data, the data entered by a recipient of the email document into the data collection form; and effectuating an action using the data populating the block of the reply email document and responsive to both the field identifier and the linkage identifier, wherein the action comprises inserting, by the actionable email documents module, the data populating the block into the field, of the metadata, the field corresponding to the field identifier and the field belonging to a database corresponding to the linkage identifier.