MailChimp - MailChimp is the best way to design, send, and share email newsletters.

Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.

Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.

Criteo - Build, scale, and activate first-party audiences with The Commerce Media Platform.

Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.

Mailjet - All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.