MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Zonka Feedback - Top feedback app designed to collect customer feedback on iPad & Android tablets, Online Surveys on Website, Mobile, Email & SMS. Track NPS & Other Metrics.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
UniSender - Email Marketing Service Provider
piHappiness - A complete customer feedback app offering real-time feedback via emoticons. Our Custom feedback software captures core human insights in mere 30 seconds.