ENTERPRISE-GRADE EMAIL, PLAINLY DELIVERED

Email infrastructure measured, not marketed.

Zeta is email on mailzeta.net infrastructure, built for organizations that judge a tool by its numbers, not its pitch.

Delivery success rate99.97%

Median delivery time0.8s

Platform uptime (12mo)99.99%

Measured and trusted by

Standard Ledger CoContinuum PartnersBaseline Systems

Every claim, backed by a number

Real uptime numbers, published publicly, always.

Per-message logs available on every plan, no upsell.

Independent security reviews published annually.

Real contractual guarantees, not marketing language.

"Our security team approved it in a single review. Everything was already documented."

Standard Ledger Co

"The published uptime numbers actually match what we observed."

Continuum Partners

Zeta Standard

One domain.

$7/mo

Zeta Business

Growing teams.

$13/user/mo

Zeta Enterprise

Larger organizations.

$22/user/mo

Is the status page really public? +

Yes — live uptime and incident history are published for anyone to check.

Is there an SLA on lower plans? +

Yes, every plan includes a contractual uptime guarantee.