IMAP (Internet Message Access Protocol) normally leaves a copy of all messages on the server allowing you to synchronise your different devices with folders and sent items appearing across locations where your account is setup. The advantage of this is that your emails are stored centrally and not impacted if your device breaks or is lost. Storing emails centrally however may mean that your account space grows in size overtime (unless you regularly delete emails), meaning you require an increasing amount of space.
POP3 (Post Office Protocol) is where email is delivered to the device(s). Once delivered the email is normally removed from the server, often after a period of time, for example after 14 days (depending on the settings in your email software). Emails and folders are not synchronised with the server. The advantage of this is that minimal server space is required. The downside is that if your device breaks, you may only have a copy of the most recent messages stored on our server. If reliant on your emails you should make sure that these are backed up in some other way.
Historically customers tended to use POP3, but in more recent years, with cheaper hosting costs and the popularity of smart phones, IMAP has become the preferred standard. If you would like further advice, please contact us.
Simply create a new forwarder for each person you want the message to be sent to. So if email@example.com needs to go to firstname.lastname@example.org and email@example.com, setup a new forwarder for each:
firstname.lastname@example.org > email@example.com
firstname.lastname@example.org > email@example.com
Forwarders can be setup without an actual email address existing.
If you setup an account as well be aware this will also capture a copy of the forwarded mail and will build in size overtime. This can sometimes be useful, providing a copy of forwarded messages, but can also unintentionally use account space if the email address is not in regular use.