Unable to send emails from my yahoo mail.

https://www.wikihow.com/Recover-a-Hacked-Yahoo-Account

The inability to send, reply, or forward emails could be from a program that was installed on your computer that is now preventing the Yahoo! Mail Rich Text toolbar from launching properly. Try switching from "Rich Text" compose mode to "Plain Text" as a work around:

1. Sign in to your Yahoo! Mail account.
2. Click the New button to start a new email.
3. To the far right of the "Subject" line click the "Plain Text link.
4. Compose and send your email.

To make "Plain Text" your default when replying or forwarding, do this:

1. Sign in to your Yahoo! Mail account.
2. Click "Options," then select "More Options" from the pull down arrow in the upper right corner of your Mail page.
3. Select "General" from the list of options on the left side of the page.
4. Check the box next to; When replying & forwarding Mark original message with > (plain text only).
5. Click the "Save Changes" button in the upper left corner.

Hi,

If you are not connected to the internet, you can only work offline, and for example, if you write an email it will not send until you do connect to the internet.

You can configure Outlook 2007 to work with Yahoo.

If you want to "POP" your Yahoo! Mail into your Outlook 2007 application, here's how:

1. From the Tools menu, select "Account Settings." If you do not see "Account Settings," place your cursor over the two arrows at the bottom of the list to display more choices.
2. On the Email tab, click New.
3. Check the box next to the first option, "Microsoft Exchange, POP3, IMAP, or HTTP" and click Next.
4. In the Your Name box, type your name as you'd like it to appear when you send a message.
5. In the Email Address box, enter your Yahoo! Mail address (for example, "[email protected]").
6. Check the box for "Manually configure server settings or additional server types" and click Next.
7. Check the box next to the first option "Internet E-mail" and click Next.
8. In the Server Information area, under "Account Type" select POP 3 from the pull-down menu.
9. In the Incoming mail server field, enter: pop.mail.yahoo.com.sg
10. In the Outgoing mail server (SMTP) field, enter: smtp.mail.yahoo.com.sg
11. In the Login Information area, in the User Name field, enter your Yahoo! ID (your email address without the "@yahoo.com").
12. In the Password box, enter your Yahoo! Mail password.
13. Check "Remember Password" if you don't want Outlook to prompt you for your password each time you check your mail. Handy!
14. Do not check the box labeled "Log on using Secure Password Authentication (SPA)."
15. Click on the More Settings button.
16. Click on the Outgoing Server tab and check the box next to "My outgoing server (SMTP) requires authentication."
17. Click on the Advanced tab.
18. Under "Incoming Server (POP3)", check the box next to "This server requires an encrypted connection (SSL)". The port number in the "Incoming Server (POP3)" field should automatically change from 110 to 995. If it doesn't, make sure the port number is set to 995.
19. Under "Outgoing Server (SMTP)", check the box next to "This server requires an encrypted connection (SSL)". Enter port number "465" in the "Outgoing Server (SMTP)" field.
20. If you'd like to keep a copy of your email messages on the Yahoo! Mail server, check the box next to "Leave a copy of messages on the server." If you want to delete your messages from the Yahoo! Mail server after viewing them in Outlook, don't check the box.
21. Click the OK button.
22. Click the Next button on the Email Account Wizard, then click Finished.
23. Would you like your Yahoo! Mail inbox to be your primary inbox in Outlook 7? If so, click the Tools menu and select "Account Settings." If you don't see "Account Settings," place your cursor over the two arrows at the bottom of the list to display more choices.
24. From the list, select the pop.yahoo account you've just added and click the Set as Default button.
25. Click the Close button. You're done!

Troubleshooting instructions
If you followed the above configuration steps, you should be all set. However, if you cannot send or receive mail with your email client, try the following tips.
The Yahoo! Mail SMTP server requires authentication. Make sure you have enabled SMTP authentication. To turn this setting on, follow these steps:

1. From the Tools menu, choose "Account Settings."
2. Select the "E-mail" tab.
3. Select your Yahoo! Mail account and click Change.
4. Click on the "Outgoing Server" tab.
5. Check the box next to "My Server Requires Authentication."
6. Please make sure that "Log on using" is not checked.
7. Click OK.

To control deletion of messages from the Yahoo! Mail server:

1. From the Tools menu, select "Account Settings."
2. Click on the "Email" tab.
3. Select your Yahoo! Mail account and click Change.
4. Click on the "Advanced" tab.
5. Check "Leave a copy of messages on server" if you want to save your Yahoo! Mail messages on the Yahoo! Mail server as well as on your local computer. Please note that setting your email client to remove messages from the server will cause your messages to be deleted from the server. Once the messages are deleted, we are unable to retrieve them.
6. Click OK.
7. Close Microsoft Outlook and restart.

We strongly recommend that you enable SSL for both POP and SMTP, as detailed in the above instructions. This will ensure that your Yahoo! ID, password and email messages are transmitted securely between your mail client and the Yahoo! servers. However, if you choose to not use SSL for SMTP, your email client will likely default the SMTP port to 25. If your ISP blocks port 25 or if you're unable to send email, then you will need to use port 587 when sending via Yahoo!'s SMTP server. To make this change, please follow the directions below:

1. From the "Tools" menu, select "Account Settings"
2. Select your Yahoo! POP account and click on Change.
3. Click on the "Advanced" tab.
4. Click OK and Close.

Unable to send Yahoo Mail Solution to Fix Unable to Send Emails From My Yahoo Account gmail and...
https://answers.yahoo.com/question/index?qid=20141011061055AAGVf23

Just check the mail address full and then try to send the mails
or else change the Browser and try and use Mozilla Firefox to get fast browsing

I unable to send emails .

Check your browser compatibility and net speed and make sure of click of only once of "send" and do try to click another time while first click operation is going on.

Please make sure that you've entered your Yahoo! Mail address as the "From" address in your email client. You won't be able to send mail if you've entered another address.

If you have the Norton AntiVirus email feature enabled, you might have to do additional configuration to use Outlook or Outlook Express. For more information, please visit the Symantec web site.

If you've tried the above steps and continue to have problems, your ISP might not allow its users to send messages with other companies' SMTP outgoing mail servers.

If you're unable to send email, try using port 587 when sending via Yahoo!'s SMTP server. Here's how to make this change in Outlook:

1.From the "Tools" menu, select "Accounts."
2.Select your Yahoo! POP account and click the "Properties" button.
3.Click the "Advanced" tab.
4.Next to "Outgoing server (SMTP"), change port 25 to 587.
5.Click "Apply." Then click "OK" and "Close." Source(s): http://help.yahoo.com/l/us/yahoo/mail/ya…

Hello laurenloscia

alot of the times, just going into internet options and setting everything to default, and clearing the cookies and files works about 50% of the time.

This is possibly a yahoo issue. If you use yahoo thru ATT, you can call ATT for support and they will escalate any valid issues to yahoo for you.

Their phone number is 1-877-722-3755

ask for tech support at the prompt

they can remote on your computer to see if it is a java issue or whatever

if they can replicate it on their computer also, they will create a yahoo trouble ticket and give you thier member service number. Yahoo resolves 85% of these within 48 hrs.

If they cant replicate it, then they will consider it a pc issue and refer you to connect tech or to best buy's geek squad.

Personally, I would also try sending emails in safemode, If you can do it in safemode, and not in reg mode, it is definately PC related.

To get to safemode, turn your computer off and when you turn it back on, tap the F8 button until you get an advanced screen. Pick safemode with networking with the arrow keys. Log in, click yes when it tells you you're running in safemode, and then when your on your desktop, which will look alot differnt, black background with big icons, click on internet explorer and go to mail.yahoo.com and see if it works now, if it does, like i said, its pc related. If it still cant, call ATT's support if you have thier DSL or U-Verse

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Yahoo Mail has 2 modes: 1.Classic mode and 2.Standard mode I guess you're in standard mode,I suggest you switch to classic mode, I hope it could help you
Good luck