WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Gmail Mail Merge - Send personalized emails with attachments
NEWOLDSTAMP - Email signature generator
Tropical.io - Connect your CRM and other sources (Mailchimp, Unbounce, GoToWebinar, Uservoice, and more) and we tell you which leads are hot
Sigstr - Email signature marketing
Nova Inbox - Personalize emails in seconds, right from your inbox