I accidentally deleted all the pictures from my DICM folder

It is often possible to recover deleted files, including pictures, from a computer or camera. However, the success of the recovery process depends on a number of factors, including how the files were deleted and whether they have been overwritten by new data.
To recover the deleted pictures from your computer, you can try using a file recovery software program. There are many options available, both free and paid, that can scan your hard drive for deleted files and attempt to recover them. Some popular options include Recuva, Disk Drill, and PhotoRec.
To recover the deleted pictures from your camera, you can try using a digital image recovery software program. These programs are designed specifically to recover deleted images from digital cameras, memory cards, and other storage devices. Some popular options include CardRecovery and Digital Photo Recovery.
It is important to note that recovery software may not be able to recover all deleted files, and the chances of successful recovery decrease as more data is written to the storage device. If you are unable to recover the deleted pictures using software, you may need to consult a data recovery professional for assistance. They will have the tools and expertise to attempt a more thorough recovery of the lost data.

In Yahoo Mail:

1. Click Trash.
   - Your Trash folder's contents appear to the right.
2. Select any messages you would like to save.
3. Click Move.
   - A pop-up with your folder list displays.
4. Click the folder you want to move the messages to.

Your selected emails move to the folder you indicated.

Not seeing emails in your Trash? Yahoo Mail regularly empties the Trash folder. Once it's been emptied, they're permanently deleted from the Yahoo Mail servers.

Learn the options for recovering emails in our restoring permanently deleted emails and IMs help article.

Recover lost or deleted emails and IMs

1.Connect the iPad to the computer and launch iTunes.
2.Click on the iPad name on the left side under devices.
3.Click on the Photos Tab on the right.
4.Uncheck all of the albums or folders that you want to remove from the iPad under the Sync Photos from heading.
5.If you want to remove all of the photos - uncheck the Sync Photos From heading
6.Click on Apply in the lower right corner of iTunes
More info: How to delete a photo on an iPad

The messages that you delete go into your trash folder.

1. Simply go into your trash folder in your email.
2. Click on the boxes of the messages you want to undelete. This will place check marks in the boxes.
3. Then click on Move and select Inbox. The messages will be moved to your inbox.

Losing important emails or accidentally deleting emailsthat you still need can be frustrating. Good news is that Yahoo! Mail providesways to retrieve deleted messages. In fact, whenever you delete a message fromyour inbox, it is automatically transferred to a "Trash" folder incase you need it again in the future. In case your "Trash" folder isemptied, you can still recover deleted messages using Yahoo's"Restore" feature ? Log in to your Yahoo! Mail account.Navigate to the "Trash" folder located at the left portion of thescreen, and then check if the deleted message is there. ? Open the message and select the"Move" option in the Yahoo! mail toolbar. Select "Inbox" orany other existing folder into which you want to transfer the message. It willthen be immediately transferred to your chosen folder. ? Use the "Search" option atthe upper portion of the window if you do not want to browse through severaldeleted emails. Type the email address of the sender or other keywords relatedto the email message and click on "Search." ? Use the "Yahoo! MailRestore" feature to recover mails that have been deleted in the past 24hours. This is if your trash folder is empty and your deleted emails are nolonger available. Click on the "Help" button at the upper portion ofthe screen and then select "Help" once again from the options thatappear. ? Select "Emailing: TheBasics" from the list of "Help topics." Click on "Deletingand Recovering Mails," then choose "Restore Lost or DeletedEmails." ? Read the instructions on how torecover emails that were deleted within the last 24 hours. Complete the requiredform and hit "Submit." You will be prompted once emails are restored.

Photos can be successfully retrieved from a memory card - however there is a catch. When you delete a photo, you really just tell the camera/computer to act like it isn't there. The actual bits in memory aren't changed to delete it (there is software you can get to actually delete them, but its usually completely unnecessary).
To get back your lost picture files try to use flash file recovery software. http://www.panterasoft.com/file-recovery/index.html

If you accidentally deleted an email and it now resides in your "trash" folder you can move it a folder of your choosing.First click the box next to the email, then go to the drop down menus above the email and select "move". Choose what folder you want it in and you are done.

If you emptied your trash than you can not recover the email. You could try calling Yahoo and see if they still have a copy of it on their server backups, I doubt they would do it for free.

Go into your camera like you would your hard drive. Go to my computer then, look for your camera listed. Then there is usually a folder listed DCIM. Just look throught those folders. You will find the pictures. Then select them all by clicking and holding shift and delete.

What model is your camera? 8.1 refers to the pixel count.

Probably you just deleted it into oblivion. On floppy disks in Windows, if you delete something, it's really gone - there's usually no trash can on a floppy disk. Probably it works the same on a CF card, which is also regarded as a kind of removable disk by Windows. Or was the file already on your hard disk?