Nova Inbox - Personalize emails in seconds, right from your inbox
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
Mailcastr - Create email signature that tells when your email is read.✉️
InboxSDK - First usable API to write Gmail Apps for 1B active users
MySignature - MySignature is FREE Email Signature Generator that helps to create Professional Signatures for major email clients such as Outlook, Gmail...