HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Vendasta Technologies - Vendasta is an agency in a box with white label platform, marketing automation and more. Details in here: https://www.vendasta.com/pricing
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.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Salesforce - CRM software solutions and enterprise cloud computing from salesforce.com, the leader in CRM and platform as a service.