Cannot receive BT Mail emails in Outlook 2013

[Pelican]

I USE W 8.1 - YAHOO - OULOOK 2013.

YAHOO IS CONTINUALLY RECEIVING DELAY AND NON DELIVERY MESSAGES FROM THE HOTMAIL POSTMASTER. 

THEY REFER TO EMAILS THAT I HAVE SENT AND ARE NOT SPAM NOR HAVE THE ADDRESSEES RECEIVED THEM. 

THESE DELAY AND NON DELIVERY MESSAGES DO NOT COME IN TO MY OUTLOOK 'IN' BOX?

IN ADDITION A BT MAIL ICON HAS APPEARED ON MY START SCREEN WHOSE CONTENTS ARE A MIRROR IMAGE OF MY YAHOO EMAILS BOTH IN AND OUT - WHY?

MANY SEEM TO THINK W 8.1 AND OUTLOOK 2013 DO NOT WORK WELL TOGETHER AND ITS BETTER TO USE WLM?

ANY ADVICE AND GUIDANCE WOULD BE MOST WELCOME.

THANK YOU.

[licquorice]

It is quite easy to set up WLM and just try it and see if there is any improvement. You needn't delete anything from Outlook 2013.

PS You seem to have hit the Caps Lock key.

[Pelican]

Thank you for very quick reply, was'nt meaning to 'shout' but makes it easier for me and maybe others to read, will await other replies and if necessary switch to WLM.

[licquorice]

You don't need to 'switch', you can run the 2 in parallel if you wish.