Postmark for reliability. Mailers.io for orchestration.
Attach Postmark as a sending server, enforce quotas, fail over to other providers, and keep a unified view across transactional and marketing sends.
- Native
- APINative
- Per-tag isolation
- ServerPer-tag isolation
- To any provider
- FailoverTo any provider
- Reporting
- UnifiedReporting
Postmark for the sends that must land. Everything else, routed.
Postmark is known for strong transactional deliverability and clean, simple APIs. Many teams keep it dedicated to transactional traffic and use another provider for marketing or cold — at which point the question becomes how to operate both without splitting the team's attention.
Mailers.io brings Postmark into the same control plane as every other provider. Transactional stays on Postmark, marketing on another provider, reporting stays unified, and routing stays quota-aware.
Postmark stays Postmark. The workflow gets smarter.
- Step 1
Attach Postmark server token
Add your Postmark server token as a sending server. Multiple servers or tags can attach as independent routes.
- Step 2
Caps & priority
Set hourly and daily limits per server. Pin transactional pools to high priority, keep marketing on secondary routes.
- Step 3
Observe every event
Delivery, bounces, spam complaints, and opens/clicks surface in unified reporting with provider attribution.
What routing Postmark through Mailers.io unlocks.
Per-server / per-tag isolation
Treat each Postmark server as its own sending source. Keep reputation and quotas clean per message stream.
Quota-aware routing
Platform caps on top of Postmark plan limits keep bursts predictable.
Fall through on failure
If Postmark returns an error, pooled providers (SES, Mailgun, SMTP) take the send automatically.
Unified templates & suppression
Platform-level templates and suppression apply across Postmark and other providers together.
Authentication verification
Continuous SPF/DKIM/DMARC verification against Postmark-managed records for your domains.
Transactional + marketing view
See Postmark transactional next to marketing traffic on other providers. One picture, not two.
- You run Postmark for transactional and want redundancy
- You want Postmark alongside marketing providers in one dashboard
- You need per-server quota control and clean isolation
- You want provider-attributed reporting across your stack
- Postmark is transactional-focused — we respect that and keep it out of pools where that matters
- Reputation accrues per Postmark server — we do not pool or move it
- Postmark-native features (message streams, broadcasts) stay within Postmark
Questions answered clearly.
Keep Postmark for what it does best. Give the rest a real routing layer.
Attach Postmark to your pool, keep transactional tight, and run marketing and cold through other providers — all from one dashboard.