You are here

Communication

Communication

FBK offers a fast, high-storage, safe e-mail system, with centralized and customizable antivirus and antispam services, accessible from any device (PCs, tablets, smartphones), from any client, and any network. The system also provides management of calendars, contacts, meetings, activities, mailing lists, both personal and shared. It offers as well a number of audio and video conferencing systems based on IP protocols.

Should I use IMAPS or POPS?

-------- IMAP ADVANTAGES OVER POP --------------------------------------------

.... Connected and disconnected modes of operation

When using POP, clients typically connect to the e-mail server briefly, only
as long as it takes to download new messages. When using IMAP4, clients often
stay connected as long as the user interface is active and download message
content on demand. For users with many or large messages, this IMAP4 usage
pattern can result in faster response times.

.... Multiple clients simultaneously connected to the same mailbox

The POP protocol requires the currently connected client to be the only
client connected to the mailbox. In contrast, the IMAP protocol specifically
allows simultaneous access by multiple clients and provides mechanisms for
clients to detect changes made to the mailbox by other, concurrently
connected, clients.

.... Access to MIME message parts and partial fetch

Usually all Internet e-mail is transmitted in MIME format, allowing messages
to have a tree structure where the leaf nodes are any of a variety of single
part content types and the non-leaf nodes are any of a variety of multipart
types. The IMAP4 protocol allows clients to separately retrieve any of the
individual MIME parts and also to retrieve portions of either individual
parts or the entire message. These mechanisms allow clients to retrieve the
text portion of a message without retrieving attached files or to stream
content as it is being fetched.

.... Message state information

Through the use of flags defined in the IMAP4 protocol, clients can keep
track of message state; for example, whether or not the message has been
read, replied to, or deleted. These flags are stored on the server, so
different clients accessing the same mailbox at different times can detect
state changes made by other clients. POP provides no mechanism for clients to
store such state information on the server so if a single user accesses a
mailbox with two different POP clients, state information—such as whether a
message has been accessed—cannot be synchronized between the clients. The
IMAP4 protocol supports both pre-defined system flags and client defined
keywords. System flags indicate state information such as whether a message
has been read. Keywords, which are not supported by all IMAP servers, allow
messages to be given one or more tags whose meaning is up to the client.
Adding user created tags to messages is an operation supported by some
web-based email services, such as Gmail.

.... Multiple mailboxes on the server

IMAP4 clients can create, rename, and/or delete mailboxes (usually presented
to the user as folders) on the server, and move messages between mailboxes.
Multiple mailbox support also allows servers to provide access to shared and
public folders.

.... Server-side searches

IMAP4 provides a mechanism for a client to ask the server to search for
messages meeting a variety of criteria. This mechanism avoids requiring
clients to download every message in the mailbox in order to perform these
searches.

.... Built-in extension mechanism

Reflecting the experience of earlier Internet protocols, IMAP4 defines an
explicit mechanism by which it may be extended. Many extensions to the base
protocol have been proposed and are in common use. IMAP2bis did not have an
extension mechanism, and POP now has one defined by RFC 2449.

Pages