Built a tool to track the 0.30% Gmail/Yahoo spam threshold across multiple Klaviyo accounts — feedback from agencies wanted
Hey folks,
I manage way too many Klaviyo accounts to check spam complaint rates one by one, so a few months ago I started building a small side tool to do it for me — and it's grown into something I think other agencies might find useful.
The problem: since Feb 2024, Gmail and Yahoo auto-block or throttle campaigns once spam complaints cross 0.30%. If you're only managing one account, that's easy to eyeball. If you're managing 10+ client accounts, catching one that's drifting close to the line before it actually blocks a client's sends is a lot harder — and by the time you notice manually, it's often too late.
What I ended up building (InboxGuard):
- A multi-account dashboard sorted by risk, so the accounts closest to the threshold surface first instead of digging through each one
- Automatic email alerts before an account actually crosses 0.30% — the whole point is catching it before your client does
- New this weekend: a 1-click shareable client report — a secure, read-only link you can send a client showing their deliverability is being watched, with zero API keys or sensitive data exposed
Stack-wise, for anyone curious: Next.js 16, Clerk, Drizzle, API keys encrypted AES-256 at rest.
I'm looking for 3-4 agencies or CRM consultants managing multiple Klaviyo accounts to try it for free and tell me honestly if it's solving a real problem or if I'm missing something obvious. Happy to answer any technical questions here too.