SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Recurrr - Send recurring emails
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.
FollowUpThen - The simplest way to schedule an email reminder
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.