MailChimp - MailChimp is the best way to design, send, and share email newsletters.
SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.
Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.
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.
ZeroSpam - Cloud email security & anti-spam solution