# Ask SI: best email stack for a 3-person SaaS under 5k users?
Canonical: https://inboxdigest.io/fr/posts/tiny-saas-tool-pick

Client is three founders, no marketing hire, 4k signups, needs welcome sequence plus monthly product updates. Budget under $200/month all-in.

I usually recommend Loops or Customer.io Essentials depending on whether they want visual automation or event-driven journeys. For heavy AI-assisted creation with minimal design time, Brew free tier plus Resend transactional is worth testing.

What would you pick and why? Especially interested in teams that outgrew Mailchimp but do not need Klaviyo yet.