Malware?

I think I may have some malware on my iPhone. The only place it appears in on my Yahoo e-mail. Ads are at the top of my inbox. These ads don't appear on my Yahoo account on my iMac, just on my iPhone. Short of deleting my Yahoo account and going totally with Gmail, is there any way to get rid of this problem? Thank you in advance for any suggestions.

 

Well, I thought it was the Yahoo app too, so I deleted the app and went into my Yahoo mail through the regular Internet. The ads are still in my inbox.

 

They are at the top if my last legitimate email message as if I just received it. Everything from Progressive insurance ads to ads for dating sites. I'm not sure how to make a screen print in my iPhone. I know how with my iMac but the ads don't show up on the computer.

 

Yes, you stated it exactly right. Thanks for the instructions on making screen prints. I am attaching it here. I deleted all my emails but you can see where the ad is above where they were.

 

Yes, it just started yesterday with the mail app. I deleted the app because of it. But it remained on my regular Yahoo too. I just got another ad for dating women over 50. Is that Yahoo too? I guess I'm getting rid of Yahoo altogether. Thanks everyone.

 

Sorry to sound stupid, but I'm not following. Where do I find this IOS app?

 

Oh, okay. I'm starting to understand now. The Yahoo app I had before wasn't setup this way. I'll give it a try. Thanks so much.

 

It worked great! Thank you very much.