Downloadable mobile applications for sending, receiving, and reading emails, organizing and prioritizing emails, screening, muting, and blocking unwanted email, customizing email features and data feeds featuring user-defined information, multi-lingual communication, providing customized electronic mail, managing electronic mail delivery and receipt, electronic management of emails, documents, images, data and computer files, delivery of messages by electronic transmission, electronic data interchange (edi), electronic store-and-forward messaging, wireless digital messaging, email access, virus scanning, spam protection, updating and syncing emails, contacts, calendars, and files, document delivery, storage of emails, documents, images, data and computer files, event scheduling, managing calendars, managing group calendars, task delegation and reporting, recording notes, reminder lists and notes, transferring data to and from data bases and to and from computer programs and computer files; Downloadable computer software for sending, receiving, and reading emails, organizing and prioritizing emails, screening, muting, and blocking unwanted email, customizing email features and data feeds featuring user-defined information, multi-lingual communication, providing customized electronic mail, managing electronic mail delivery and receipt, electronic management of emails, documents, images, data and computer files, delivery of messages by electronic transmission, electronic data interchange (edi), electronic store-and-forward messaging, wireless digital messaging, email access, virus scanning, spam protection, updating and syncing emails, contacts, calendars, and files, document delivery, storage of emails, documents, images, data and computer files, event scheduling, managing calendars, managing group calendars, task delegation and reporting, recording notes, reminder lists and notes, transferring data to and from data bases and to and from computer programs and computer files