MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Litmus - litmus tests and tracks your email campaigns, so you can always put your best design forward.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Return Path - Inbox placement solutions from Return Path helps improve email deliverability and increases email marketing ROI.
AWeber - AWeber is an Email marketing software that's easy to use. Send email newsletters & autoresponders and deliver top notch emails.