Automate Email Campaign for 250K Leads

I need an email marketing program set up and fully automated for a database of 250,000 leads on ZOHO. The trigger for these emails will be truck insurance renewal dates, followed by a series of six highly personalized emails sent 90, 60, 30, and 14 days before renewal... (Budget: $250 - $750 USD, Jobs: Data Management, Email Handling, Email Marketing, Internet Marketing, Lead Generation, Leads, Marketing Strategy, Zoho)