I make HTML-template (or signature only) for email (mobile-frendly) from:
• PSD,
• PDF,
• other HTML.
It maybe used with:
• Thunderbird(Stationery) ,
• Mailchimp ,
• Campaing Monitor,
• Constant Contact ,
• Stampready.
I test my work in :
• MSOutlook2007/2010/2011/2013/2016,
• Live Mail,
• Mac (OSX),
• outlook / livemail (include Office365 and Outlook Email)
• aol,
• yahoo,
• Android (Nexus7, Nexus6 and Nexus5),
• iPad,
• iPhone 5/6/6+ (native mail and Gmail_app).
100% hand code , purely and carefully.