 | Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years. Thanks, CNET Support |
Discussion is locked
Next up, use an email client like Thunderbird. As to contacting Yahoo, that's on the web. Beware those fake 888 and 800 numbers out there. There are no Yahoo people here so do not expect help with that except advice on using better email software.
Hopper ( or is it buggi? 
) ...
It's a tough one to find an answer to. I did find a site which indicated Yahoo used to offer an option, which allowed you to choose how you wanted the social icons to appear. Above or next to each other. The option has seen been removed. 
I can't vouch for the below site, or for the information included in her blog post. It's just something I found as a result of a search. But she does show the icons next to each other. Make sure you follow/ed the same steps suggested in her "Yahoo Email Custom Signature Tutorial".
http://www.cakedvintage.com/2012/08/design-confessions-yahoo-email-custom.html
If you have no luck here or at Yahoo Answers, I would suggest getting in touch with Yahoo directly. ( See: https://help.yahoo.com/kb/helpcentral ) It's the best I know to tell you.
Best of luck!
Carol
Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic