I have thousands of mail I want to delete them all not 50 at a time but don't know how do delete all. can anyone help? thank you?

How To Delete Multiple Yahoo Email In One Time?

1) Sign In To Your Yahoo Mail.

2) On the top of right side, find Mail Option and click it.

3) Under General Tab, find messages/ result per page.

4) Change it to "Show 200 messages/ result on each page".

5) Save the preferences by clicking Save Changes at the left top corner.

I've had good success with deleting about 300-400 at a time. Here's what I do.

At the top left of the Yahoo Inbox, there's a checkbox and a down-pointing arrow. Click the arrow and it gives you various ways to select email: from All, None, Read, Unread, Starred, Unstarred. Since I want to keep the emails I've starred, first I sort by unstarred.

This puts a checkmark in front of the first 50 emails that are unstarred. Scroll down until only the last few checked emails show and click Unstarred again. You can do this anywhere from three to six times, checking several hundred emails. Usually it messes up and unchecks the ones you already checked somewhere after 400 and you have to start over. (I think the most I ever deleted at one time was just under 700.)

Once you’ve checked a whole lot, at least a couple hundred, you delete them. At the top center, you click Delete and it hovers at 5% completed for so long you wonder if it's going to work, then all of a sudden it finishes.

If you do this while you're semi-busy at another window or tab, you can delete thousands without it being a big deal. It's easy to do this while using Yahoo Answers or social media.

I cleared 19,000 emails from the account that had the most, for the record. I could easily have done it in a single morning, while I was doing other things.

Only the Trash and Spam folders have an icon to delete everything. Hover over the folder and click the trash can that appears.

FULL FEATURED EMAIL

Delete a single email from your message list.

1. Select the checkbox next to the message.

2. Click Delete.

or

1. Click the email to view it.

2. Click Delete.

Deleting multiple emails in a list

1. Select the checkbox next to the emails you want to delete.

2. Click Delete.

Deleting a range of emails in a list

1. Select the checkbox next to the first email you want to delete.

2. Shift select the checkbox next to the last email you want to delete.

3. Click Delete.

Deleting all email in a list

1. Click the down arrow next to the top checkbox and select "all".

2. Click "delete"

3. Deleting a huge amount of email can take some time. It might be better to start with a small range and keep trying larger chunks just to make sure it works and is not hung up. The limit is 10,000 emails at one time.

BASIC EMAIL

Delete a single message

1. Open an email or select its checkbox.

2. Click Delete.

3. You can also click the Trash icon at the far right of the message to delete it.

Delete multiple emails in a list

1. Select the check boxes of the emails you want to delete.

2. Click Delete.

You can delete up to 100 emails at a time, or in groups. Put a check in the box at the top left of the message list to select all and then hit Delete: https://help.yahoo.com/kb/SLN16015.html