Why switch

They send email. Sendarix controls delivery.

Sendarix is the email delivery control plane with the relay infrastructure behind it — where you define routing policy, isolate tenant blast radius, monitor every event, and recover before users notice.

Shared reputation pool

no control plane
t01
t02
t03
t04
t05
t06
t07
t08

One abusive tenant poisons the pool — every customer degrades.

Isolated with Sendarix

blast radius contained
t01
t02
t03
t04
t05
t06
t07
t08

The bad tenant is quarantined to its own pool — everyone else stays healthy.

Category shift

A new layer, not another sender

Classic ESPs optimize for sending volume. Sendarix optimizes for infrastructure control — the operations your platform team needs when email is the product.

Sending → Infrastructure control → Classic ESPs Legacy relay Sendarix
architecture · native delivery stack
Your application SENDARIX CONTROL PLANE Routing policy + failover Isolation tenant + pool Monitor events + health Recover reroute EU relay US relay Dedicated IPs Tenant pools Inbox providers · Gmail · Microsoft 365 · Yahoo

Representative product UI — illustrative data, not live customer metrics.

Operator views

See the control plane, not a black box

Routing rules, tenant isolation, live events, and relay health in one operator console — representative views shown with illustrative data.

routing · rule builder
WHEN message_type = otp AND route_health(eu_pool) < 95%
ROUTE → us-relay POOL transactional-critical
ELSE → eu-relay POOL shared-default
rule active · evaluated per message

Representative product UI — illustrative data, not live customer metrics.

isolation · tenants
TenantPOOLSignalStatus
acme-corpdedicated-ip-12Clean sendshealthy
northwindshared-eu-3Stablehealthy
tenant_8842quarantine-1Complaints risingisolated
globexshared-us-1Stablehealthy

Representative product UI — illustrative data, not live customer metrics.

events · message lifecycle · msg_01HF2K…
03:14:02 accepted api · idempotency_key=otp_8842
03:14:02 queued pool=transactional-critical
03:14:03 sent relay=eu-primary
03:14:051 deferred 421 throttled · eu-primary
03:14:06 rerouted policy=failover → us-relay
03:14:07 delivered inbox

Representative product UI — illustrative data, not live customer metrics.

Evaluate & migrate

Compare before you commit

Side-by-side guides for teams moving critical streams without a big-bang migration.

Move one critical stream this week

Keep everything else where it is. Prove the control plane on OTPs, password resets, or billing alerts first.