EmailTray is a lightweight email client for the Microsoft Windows operating system. EmailTray was developed by Internet Promotion Agency S.A., a software development d.

EmailTray 2.0 was publicly released on October 7, 2010, as a free desktop email client. It supports multiple accounts using the standard POP3/SMTP or IMAP protocols, with or without SSL.

EmailTray combines features of a simple email client and an email notifier that alerts users to the new email messages that EmailTray considers important.

EmailTray originated as SenderOK, an email productivity plug-in for Microsoft Outlook. The main features of SenderOK were email sorting and desktop notification about new prioritized email messages.

Apart from email sorting, the SenderOK plug-in also offered a social feature: the photo business cards of email senders were displayed along with their email messages. The business card information was retrieved from a proprietary social network hosted at SenderOK.com. In case an email sender had no SenderOK profile filled in, the SenderOK plug-in used information from the LinkedIn and Facebook social networks.

In October 2010, SenderOK was released as a standalone email client and was rebranded as EmailTray.

EmailTray is an email program that runs in the taskbar area of a Windows PC. The program goes active when a user gets new email messages that EmailTray considers important. At any time the program can be opened and used as a fully functional email client.

Protocols and Webmail services supported by EmailTray are: POP3, IMAP and SMTP, Yahoo! Mail, Gmail, Windows Live Hotmail and AOL Mail accounts. All passwords from user's email accounts are stored locally.