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.

Key Requirements:
- Set up on ZOHO
- Fully automate email sequence
- Use existing email templates
- Highly personalized content based on leads' information

Ideal Skills and Experience:
- Proficiency in ZOHO
- Experience in automating email marketing campaigns
- Strong personalization capabilities
- Familiarity with email marketing best practices