Comprehensive Email Verification SAAS

I'm looking to develop a robust SAAS platform for email verification and validation. This tool will help clients ensure the integrity of their email lists.

The platform should include the following verification services:
- Syntax check (valid email format)
- Domain check (valid domain name)
- Disposable email detection
- Mailbox existence check
- Catch-all server detection
- Spam trap and abuse detection

Additionally, I need the platform to offer:
- Detailed report generation
- API access
- User management
- List management
- Billing and payments

Ideal skills and experience:
- SAAS development expertise
- Strong knowledge in email verification technologies
- Experience in building detailed reporting systems
- API development skills
- User management and billing integration experience

Looking forward to your bids!