Is there a bulk email service (like mailchimp) that lets you set up emails based on the date that the user signs up (like a weekly course) or based on a user-entered date (like a count-down to a birthday)??
Bulk email service that handles sending an email based on time since the user signed up
bulk email
The term you want is an email 'autoresponder'.  Most of the SaaS email programs have them.Mailchimp: http://www.mailchimp.com/features/autoresponders/Aweber: http://www.aweber.com/autoresponders.htmGetResponse: http://www.getresponse.com/features#followUpMessagesConstant Contact: http://www.constantcontact.com/email-marketing/features/index.jspFeatures will differ from provider to provider. The right choice for you depends on your particular needs.