The new Yahoo 7 does not let me into mail account. I have tried all suggestions provided by Yahoo

try this & see if it works for you

How to change back to Yahoo
Log in to your yahoo mail account
In your web browser go to the yahoo mail home page sign in to your account using your yahoo ID and password, then click the yellow sign in button. Once you've successfully logged in you'll see your email folders on the left and the what's new and inbox tabs in the middle.
Choose the mail classic option
On the upper right side of the page there are three links -- Mobile, Options, and Help. Click Options, and when the drop down menu appears, choose mail classic
Confirm that you want to switch back
A dialog box will pop up with two choices -- switch to yahoo mail classic and cancel. If you're sure you want to switch, click the first option; otherwise, choose cancel to keep the new yahoo mail.

Depending on your computer's speed and your internet connection, the switch may take several seconds. When it's completed, you'll be looking at the old familiar yahoo mail classic interface.

Log in to your Yahoo! Mail account

In your web browser, go to the Yahoo! Mail home page (http://mail.yahoo.com). Sign in to your account using your Yahoo! ID and password, then click the yellow Sign In button. Once you've successfully logged in, you'll see your email folders on the left and the What's New and Inbox tabs in the middle.

Step 2

Choose the Mail Classic option

On the upper right side of the page, there are three links -- Mobile, Options, and Help. Click Options, and when the drop down menu appears, choose "Mail Classic..."

Step 3

Confirm that you want to switch back

A dialog box will pop up with two choices -- Switch to Yahoo! Mail Classic and Cancel. If you're sure you want to switch, click the first option; otherwise, choose Cancel to keep the New Yahoo! Mail. (If you wish to provide feedback about Yahoo! Mail, you can click the feedback link in the dialog box, which will open up a new window.)

Depending on your computer's speed and your Internet connection, the switch may take several seconds. When it's completed, you

If you're using the new Yahoo Mail, this is a problem for many people.

If you are using it, a simple fix of returning to Classic Mail is an option.

When you sign into your account, click options on the right hand side. Click Switch to Mail Classic and that will solve the problem that way.

Until they fix the issues with the new Yahoo Mail, this is a good fix for anyone facing this issue.

Yahoo! has recently made over its email client, Yahoo! Mail. The old standard Yahoo! Mail Classic look has been replaced with New Yahoo! Mail, which offers most of the same features but looks different and is organized differently. Yahoo! Mail users who don't like New Yahoo! Mail, or who simply like Yahoo! Mail Classic better, can switch back to the classic view easily.
Step 1. Log in to your Yahoo! Mail account
In your web browser, go to the Yahoo! Mail home page (http://mail.yahoo.com). Sign in to your account using your Yahoo! ID and password, then click the yellow Sign In button. Once you've successfully logged in, you'll see your email folders on the left and the What's New and Inbox tabs in the middle.
Step 2. Choose the Mail Classic option
On the upper right side of the page, there are three links -- Mobile, Options, and Help. Click Options, and when the drop down menu appears, choose "Mail Classic..."
Step 3.Confirm that you want to switch back
A dialog box will pop up with two choices -- Switch to Yahoo! Mail Classic and Cancel. If you're sure you want to switch, click the first option; otherwise, choose Cancel to keep the New Yahoo! Mail. (If you wish to provide feedback about Yahoo! Mail, you can click the feedback link in the dialog box, which will open up a new window.)
Depending on your computer's speed and your Internet connection, the switch may take several seconds. When it's completed, you'll be looking at the old familiar Yahoo! Mail Classic interface.
I hope you're satisfy with my answer.
Have a good day! : )

Yahoo! has recently made over its email client, Yahoo! Mail. The old standard Yahoo! Mail Classic look has been replaced with New Yahoo! Mail, which offers most of the same features but looks different and is organized differently. Yahoo! Mail users who don't like New Yahoo! Mail, or who simply like Yahoo! Mail Classic better, can switch back to the classic view easily.
Step 1. Log in to your Yahoo! Mail account
In your web browser, go to the Yahoo! Mail home page (http://mail.yahoo.com). Sign in to your account using your Yahoo! ID and password, then click the yellow Sign In button. Once you've successfully logged in, you'll see your email folders on the left and the What's New and Inbox tabs in the middle.
Step 2. Choose the Mail Classic option
On the upper right side of the page, there are three links -- Mobile, Options, and Help. Click Options, and when the drop down menu appears, choose "Mail Classic..."
Step 3.Confirm that you want to switch back
A dialog box will pop up with two choices -- Switch to Yahoo! Mail Classic and Cancel. If you're sure you want to switch, click the first option; otherwise, choose Cancel to keep the New Yahoo! Mail. (If you wish to provide feedback about Yahoo! Mail, you can click the feedback link in the dialog box, which will open up a new window.)
Depending on your computer's speed and your Internet connection, the switch may take several seconds. When it's completed, you'll be looking at the old familiar Yahoo! Mail Classic interface.

I hope you're satisfy with my answer.

Have a good day! : )

Yahoo! has recently made over its email client, Yahoo! Mail.  The old standard Yahoo! Mail Classic look has been replaced with New Yahoo! Mail, which offers most of the same features but looks different and is organized differently.  Yahoo! Mail users who don't like New Yahoo! Mail, or who simply like Yahoo! Mail Classic better, can switch back to the classic view easily.

Step 1. Log in to your Yahoo! Mail account
In your web browser, go to the Yahoo! Mail home page (http://mail.yahoo.com).  Sign in to your account using your Yahoo! ID and password, then click the yellow Sign In button.  Once you've successfully logged in, you'll see your email folders on the left and the What's New and Inbox tabs in the middle.

Step 2. Choose the Mail Classic option
On the upper right side of the page, there are three links -- Mobile, Options, and Help.  Click Options, and when the drop down menu appears, choose "Mail Classic..."

Step 3.Confirm that you want to switch back
A dialog box will pop up with two choices -- Switch to Yahoo! Mail Classic and Cancel.  If you're sure you want to switch, click the first option; otherwise, choose Cancel to keep the New Yahoo! Mail.  (If you wish to provide feedback about Yahoo! Mail, you can click the feedback link in the dialog box, which will open up a new window.)

Depending on your computer's speed and your Internet connection, the switch may take several seconds.  When it's completed, you'll be looking at the old familiar Yahoo! Mail Classic interface.

I hope you're satisfy with my answer.

Have a good day! : )

Log in to your Yahoo! Mail account In your web browser, go to the Yahoo! Mail home page (http://mail.yahoo.com). Sign in to your account using your Yahoo! ID and password, then click the yellow Sign In button. Once you've successfully logged in, you'll see your email folders on the left and the What's New and Inbox tabs in the middle.

Step 2 Choose the Mail Classic option On the upper right side of the page, there are three links -- Mobile, Options, and Help. Click Options, and when the drop down menu appears, choose "Mail Classic..."

Step 3 Confirm that you want to switch back A dialog box will pop up with two choices -- Switch to Yahoo! Mail Classic and Cancel. If you're sure you want to switch, click the first option; otherwise, choose Cancel to keep the New Yahoo! Mail. (If you wish to provide feedback about Yahoo! Mail, you can click the feedback link in the dialog box, which will open up a new window.)
Depending on your computer's speed and your Internet connection, the switch may take several seconds. When it's completed, you'll be looking at the old familiar Yahoo! Mail Classic interface.

Instructions
Log in to your
Yahoo! Mail account In your web browser, go to
the Yahoo! Mail home page
(http://mail.yahoo.com ). Sign in to your account using your
Yahoo! ID and password, then
click the yellow Sign In button. Once you've
successfully logged in, you'll
see your email folders on the
left and the What's New and
Inbox tabs in the middle. Choose the Mail
Classic option On the upper right side of the
page, there are three links --
Mobile, Options, and Help.
Click Options , and when the drop down menu appears,
choose "Mail Classic..." Confirm that you
want to switch back A dialog box will pop up with
two choices -- Switch to
Yahoo! Mail Classic and Cancel.
If you're sure you want to
switch, click the first option;
otherwise, choose Cancel to keep the New Yahoo! Mail. (If
you wish to provide feedback
about Yahoo! Mail, you can
click the feedback link in the
dialog box, which will open
up a new window.) Depending on your
computer's speed and your
Internet connection, the
switch may take several
seconds. When it's completed,
you'll be looking at the old familiar Yahoo! Mail Classic
interface.
rate dis if its helpful

Hi,

You can switch to the older version of Yahoo Mail (Yahoo Mail Classic) .To switch to Yahoo! Mail Classic (Old Yahoo), on your Yahoo Mail page click the Options link in the upper right corner between Help and Mobile, then click the Switch to Yahoo! Mail Classic link. A dialog box might appear asking for feedback. If it does, click Switch to Yahoo! Mail Classic.
Thank you!

Hi,

To switch to Yahoo! Mail Classic (Old Yahoo), on you Yahoo Mail page click the Options link in the upper right corner between Help and Mobile, then click the Switch to Yahoo! Mail Classic link.

Hope this solves your problem. For more details, click on this link Thanks.