It does not work for me, and other two N900 device Ive tested:

Follow this instruction to set up your Yahoo! Mail imap 4 account on your N900:

Email - Menu - New account

Next

Region: select your country or leave it on default

Service Provider: Yahoo! Mail (not Yahoo UK and Yahoo Plus!!!)

Next

Username: your account name at mail.yahoo.co.uk

Password: your password

Email address: youraccount@yahoo.co.uk

Finish


After this I always receive IMAP4 account settings window with incorrect username/password

Am not stupid and idiot, I use daily my yahoo account. IMAP4 setting is works on other devices except on N900.

It was tested on 3 different N900 device with 3 different Yahoo Mai account! It does not work. :-(

And I wont use a payware nokia messaging service, so do not offer that to me, thanks! ;-)

Please, help me to debug this error. Thank you!

Would someone try this for me?

If you dont have any yahoo email address, please register for one here:

http://mail.yahoo.co.uk

Thanks!

works fine for me using nokia messaging, bit busy to explain but do a quick searc on here for nokia messaging. effectively turns imap yahoo into push email for free

I try Nokia messenger and it works but it's kind of slow. I am not sure if Yahoo mail support IMAP. IT's more like POP but you have to pay for Yahoo Plus to use POP i heard.

Yahoo Mail has imap4 for ages.

imap.mail.yahoo.com
Port: 143
Security: None

for me nokia messenger is isntant. worth a go

The fact is that the default email client sets your yahoo mail correctly, but it does not synchronizes, you always receive incorrect username/password message!

Please, try to set up in normal way that i showed you in the first post, and write here your result (working/nonworkin), because Ive already reported this to maemo bug, but they say its my fault, not a bug of modest email client.

I found the mail server definition file under
/usr/share/modest/provider-date/
modest-provider-data.keyfile

It contains invalid server definition for IMAP Yahoo!Mail

[yahoo.com]
Name=Yahoo! Mail
MCC=0
Domain=yahoo.com
OutgoingMailServer=smtp.mobile.mail.yahoo.com
SecureSmtp=2
IncomingMailServer=imap.n.mail.yahoo.com
IncomingSecurity=0
MailboxType=imap
***********************
SecureSmtp must be 0 !!! (no security, port:25)

Now, sending is working, only imap accessing is still problematic.

Finally, maemo was removed IMAP Yahoo! Mail service from its system. Cheers!
Have fun with pop3...

Not sure what the problem is.
I'm using UK yahoo with @yahoo.co.uk and mine work great.
I got free IMAP (i'm not Yahoo Plus!) and can receive and send email perfectly.