Scale Cold Email Deliverability Infrastructure

Hi,

I’m Mihailo, founder of Spona (sponasales.com), a fully agentic B2B sales data and lead-generation SaaS. Users can get value immediately, without onboarding.

We’ve seen traction with cold signup campaigns that bring prospects to our homepage, using free qualified sales leads as the incentive to register.

However, after sending approximately 100,000 emails through Klaviyo, our campaigns started landing in spam. We need an experienced partner to diagnose the problem and help us build and operate the infrastructure for a one-time signup campaign targeting 7 million sales professionals. If successful, we’d expand to millions of business owners.

We already have domains, budget, 21 email variants ready to share, and the prospect data required, with a bounce rate below 1%. Our main needs are infrastructure, deliverability expertise and reliable execution. This is a major growth priority for us.

I’m interested in **all engagement options**: paid infrastructure setup, deliverability-only consulting, ongoing technical management, fully managed campaigns, affiliate partnerships or a hybrid.

For an affiliate arrangement, we provide the email copy, your affiliate link and free prospect data. You receive **30% of every dollar referred customers spend—a recurring commission with no expiry**.

I’d like to use our call to understand your experience with comparable volumes, your recommended approach, realistic inbox-placement expectations, timeline and costs.

Thank you,
Mihailo
Founder, Spona