How do you send messages to cell phones from Yahoo mail?

All e-mail messages (SMS) that I send to cell phones are returned with a failure notification. These had been working previously, They are now being returned from AT&T, Verizon and ...show more

When I entered a phone number all I get is this error message: There was a problem: Either there is a syntax error in one of your address fields, or you have used a nickname which is not in your Address Book. Please enter a valid e-mail address (e.g...

I have one of the recent version of Yahoo Messenger and can't seem to figure out how to do this. It used to be really easy. Thanks for your help in advance.

In Yahoo mail I can sign into chat and send SMS messages. When I'm not signed into chat in Yahoo mail I can't send SMS messages using Yahoo Messenger. I keep getting an error saying "Yahoo! Messenger cannot send SMS messages to this mobile number...

Those I'm sending messages to can all receive SMS text messages and one even sent herself an SMS message from YM, but my messages don't go through. I get no errors, even after sending more than 3 messages without a reply. They've reset their phones as...

I receive messages, but cannot send. I changed the settings based on what I read here to. plus.pop.mail.yahoo.com and plus.smpt.mail.yahoo and it still will not send. I get the following message. Send test e-mail message: Outlook cannot connect to your...

30 in BCC. Now yahoo will not let me do this. I am running a reunion and have been for several months. I have been able to send out 90 at once and now when I put 30 in each catagory and hit send it tell me: we have run across a problem and cannot send...

I need to e-mail some pictures from my cell phone and I don't know if the the recipient is signed up with Yahoo. So I thought I would send the pics from my phone to my e-mail address, then e-mail them from there................. How do I send the pics...

My wife has an e mail account with. yahoo. I have tried to send her pictures from my cell phone and they do not come through. They do show sent from my phone but do not show up on her e mail. What seems to be the problem. I have sent the same pictures...