Email clients include smartphones and, less strictly, IMAP personal computer mail applications.
[citation needed] Apple's iPhone, iPad and iPod Touch support Hotmail push email.
[1] Apple's iCloud service offers support for push email, contacts, and calendars,[2] although as of the 24 February 2012, this has been temporarily disabled in Germany due to lawsuits.
In 2010 Hotmail, and its replacement, Outlook.com, have been made push configurable for Android smartphones through the default mail application.
[5] Microsoft began offering real-time email notification with Windows Mobile 2003 (sending SMS messages when new mail arrived), then replaced it with a simulated push experience (long polling) in 2007 with the release of Windows Mobile 5 AKU2[6] under the name "Direct Push Technology".
A phone device running Windows Mobile 5 is enabled to poll the Exchange Server every 30 minutes.
If new mail arrives in the polling interval, it is instantly pulled, using a subscriber's existing wireless phone account.
Some Nokia Symbian S60 models support basic IMAP IDLE functionality with its built-in client.
As a result of the success of BlackBerry, other manufacturers have developed push email systems for other handheld devices, such as Symbian- and Windows Mobile-based mobile phones.
With the release of the BlackBerry 10 operating system for its new generation of mobile device, BES is no longer available for non-corporate client email delivery.
Sony Ericsson Smartphones (M600, P990, W950, P1, W960, W995, G900, G700) as well as some Cybershot phones (K790, K800, K810, K850, C510, C905, J105i) feature push email using IMAP IDLE or with the built-in ActiveSync client (developed by Dataviz).
For a GSM system, install a SIM card appropriate for the location, have the correct APN settings and one's mail will be delivered at local rates.
IETF Lemonade is a set of extensions to IMAP and SMTP to make them more suited to the demands of mobile email.