Is there any way to add HTML markup signature in Gmail settings? I mean, insert some HTML markup without using rich editor, just inserting HTML?
No, you're constrained to use the Rich Text editor.
After nearly giving up, I finally figured out how. I used the Chrome Developer Tools, but you should be able to use any Dev WYSIWYG editor.
On the settings page where you have the option to use the Rich Text Editor for your signature, use the Dev Tools to inspect the text area. Now you can simply edit the HTML within the signature directly!
To get my work done even more quickly, I used the built-in signature tools to upload some images and insert some hyperlinks. I just used the Dev Tools to polish everything to pixel perfection.
It is indeed possible, though not, as far as I can see, by using the Gmail signature editor directly.
You can create the signature you want using a different tool (I use WiseStamp with Firefox which supports a 'better' HTML editor) then once defined, simply copy the result from the 'normal' view, not the HTML view, and paste it into the Gmail sig edit box.
You could, of course, use an addon such as WiseStamp to provide the Sig for you but I prefer not to use an addon where there is already a suitable builtin facility.
Using this method I've even been able to embed an image without having a URL to it, though it can fail because the Sig gets too big!
I just found an incredible easy way here: http://myhtmlsignature.com/how-to-install-an-email-signature-in-gmail/
- Create an html file like signature.html and type your html code inside
- Open the file signature.html with your Internet Browser
- Copy the output and paste into the signature section of Gmail
I've made a chrome extension to help do exactly this. It overlays an HTML code editor on top of Gmail and injects your HTML email directly into the gmail compose window. You can even save your snippets and reuse them as you'd like!
Give it a shot here: Google Chrome Web Store - HTML Inserter For Gmail