Yahoo! Mail by Yahoo! Inc. (Signed)

Remove YMMAPI.dll


ymmapi.dll has 3 known versions, the most recent one is 2005, 1, 1, 13. It adds a context menu to the Window's shell named Yahoo! Mail. The average file size is about 251.36 KB. It is an authenticode code-signed executable issued to Yahoo! Inc. by the certification authority VeriSign. The programs Yahoo! Browser Services, Yahoo! Toolbar and Yahoo Toolbar have been observed as installing specific variations of ymmapi.dll.

What is ymmapi.dll?

Yahoo! Mail is a free e-mail service offered by Yahoo!.


File name:ymmapi.dll
Publisher:Yahoo! Inc.
Product name:Yahoo! Mail
Typical file path:C:\Program Files\yahoo!\common\ymmapi.dll
Issued to:Yahoo! Inc.
Authority (CA):VeriSign
Effective date:Thursday, August 10, 2006
Expiration date:Thursday, September 3, 2009

ResourcesPrograms installed in

(Note, the programs listed below are for all versions of Yahoo! Mail.)
AT&T Inc.
  67% remove
The att.net Toolbar puts everything at your fingertips with quick and easy access to your favorite online sites and applications with just one click! It's always available right from your browser wind...
AT&T Inc.
26% remove
Rogers Cable Communications Inc.
8% remove
25% remove
Yahoo! Inc.
18% remove
The most unique attribute of Yahoo! Browser Services is its ability to update and add new services on the fly without a browser restart or even reloading the page! As a user, this means no more instal...
Yahoo! Inc.
  51% remove
Yahoo! Toolbar is a toolbar that installs on the Internet Explorer and Firefox browsers, within the context of internet access functions. It allows access to several functions, including Yahoo! Search...
Yahoo! Inc.
20% remove
Yahoo Install Manager manages Yahoo program downloads and installations. The install manager keeps track of such programs and assists in the installations to put things in their proper places.
Yahoo! Inc.
7% remove
A Yahoo! Application (sometimes called an "app") is fun or useful software that can enhance your experience on Yahoo!. In many ways, you can think of an app as a website within Yahoo!'s website. What ...
Yahoo! Inc.
29% remove
This program notifies you when new messages arrive in your Yahoo mailbox.
Yahoo! Inc.
10% remove
Yahoo! Inc.
25% remove
Yahoo! Anti-Spy is the Yahoo! solution for detecting and removing spyware and adware on your computer. It scans your computer to find spyware and adware and lets you decide what to remove, what to qua...
Yahoo! Inc.
  54% remove
Get Facebook, email, news, weather and more - right from your toolbar. Yahoo Search Protection is offered as an additional service when you install Yahoo Toolbar for Internet Explorer. It allows you t...
7% remove


(Note, the behaviors below are for all versions of ymmapi.dll, select a unique version for details.)
Context menu handlers
Located in '*\shellex\ContextMenuHandlers'
  • Name: 'Yahoo! Mail'
Approved shell extensions
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
  • 'Yahoo! Mail' with CLSID {5464D816-CF16-4784-B9F3-75C0DB52B499}
Shell open commands
  • mailto

VersionsAll file variations of ymmapi.dll

MD5SHA-1File size
4af21656b2ca07a323105aae2604f482 7ebb23691544fa6e8ed16d986a37251451887033 278.77 KB
42d08a04bea63d24545c543583bc5d7a 00cf6350c495293dcf6dcf3e15e3569b23abc6b2 278.77 KB
1f5ab2484c761395ef6bcdbba8e0ece2 93204c3a77f32a7e8cf0320fc9c39aa810c21cd6 196.52 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 50.00%
Windows Vista Home Premium 14.81%
Windows 7 Home Premium 11.11%
Windows Vista Home Basic 9.26%
Windows 7 Professional 5.56%
Windows 8 Pro 5.56%
Windows 7 Ultimate 3.70%

Distribution by countryDistribution by country

United States installs about 88.89% of Yahoo! Mail.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 47.62%
Hewlett-Packard 23.81%
Toshiba 19.05%
Acer 9.52%
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