MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Hunter - Find all the email addresses related to a domain
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.
Apollo.io - Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Icypeas - This email finder has the capacity to bypass catch-alls