SendPulse is an integrated service to manage email, text and webpush campaigns.

Campaign Monitor makes it easy for you to create, send, and optimize your email marketing campaigns.

UserEngage is a Real-Time Customer and User Engagement Tool for Big and for Small Businesses, designed for maximizing the conversion.

MailerLite is an email marketing service provider with focus on simplicity, excellent customer support and beautiful email designs.

Vtiger CRM is online customer relationship management software that helps you track and nurture customers across marketing, sales, and customer service.