Signature on email address

Hey there haresh147, 

To customize your signature, you would follow Change email settings in Mail on iPhone   

"You can customize the email signature that appears automatically at the bottom of every email you send.

1. Go to Settings  > Mail, then tap Signature (below Composing).
2. Tap the text field, then edit your signature.
3. You can only use text in your Mail signatures.

Tip: If you have more than one email account, tap Per Account to set a different signature for each account."

As you'll see, there is a text field present for adding your signature. You would not be able ot add custom images and links.

Have a good one!

Hello haresh147,

Understood. As mentioned previously, the option to add a custom image or link isn't available when creating an email signature on your iPhone.

If you'd like to leave feedback about this, please do so here: Feedback - Mail - Apple

Cheers.

Good afternoon haresh147,

Welcome to the Apple Support Communities!

It sounds like you are trying to add icons to your signature, and we'd like to help. Are you using the Mail app on your iPhone 12, or a specific app from Yahoo for their email account? Unless they have something specific in their mail app, you would have to paste a photo showing these icons after your signature. Or, you could create a photo that includes your signature, company logo, and these social media icons. You would need to do this in a photo editing app.

Take care.