To create a signature under Opera Mail, follow the below procedure:
Open Opera Mail.
Click Compose button
In the Compose Message window, click on the small Settings button (small wrench icon) > Edit Signature.
The signature editor shall open, you can either choose to create a signature using HTML formatting or as Plain Text
Click on the Insert button, to add hyperlinks, images or line breaks to your signature.
Check "Apply current signature for all acounts" and Save.
CCM is a leading international tech website. Our content is written in collaboration with IT experts, under the direction of Jeff Pillou, founder of CCM.net. CCM reaches more than 50 million unique visitors per month and is available in 11 languages.