SendGrid, without lock-in. Route, compare, and fail over.
Plug your SendGrid account into Mailers.io, apply quota-aware routing, and keep a clean escape path to other providers when you need it.
- Native
- APINative
- Supported
- SubusersSupported
- To any provider
- FailoverTo any provider
- Reporting
- UnifiedReporting
SendGrid that plays well with other providers.
SendGrid is often the first ESP a team adopts, then later the one they need an exit strategy from — whether for cost, reputation, regional coverage, or vendor concentration. Rebuilding the app layer around a new provider is expensive.
Mailers.io makes SendGrid one provider of many in your pool. Keep the parts of SendGrid that work. Route around the parts that do not. No code rewrites when priorities shift.
SendGrid in your routing layer.
- Step 1
Attach SendGrid API key
Provide a scoped SendGrid API key. Subuser keys are fully supported as separate sending servers.
- Step 2
Set quotas & priority
Define per-hour and per-day caps. Prioritise SendGrid for specific mail types, or pool it with others.
- Step 3
Observe via unified reporting
Delivered, bounced, deferred, and spam report events flow into one timeline across every provider.
Keep SendGrid working. Add what it is missing.
Subuser & key isolation
Attach multiple SendGrid subusers or keys as separate servers with independent quotas and reporting.
Quota-aware routing
Respect SendGrid plan limits while enforcing your own internal caps on top.
Failover to any provider
When SendGrid errors, pooled providers like SES, Mailgun, or SMTP take over automatically.
Platform templates & suppression
Unified templates and suppression enforced across SendGrid and every other provider.
Auth verification
Continuous SPF, DKIM, and DMARC verification against your SendGrid-managed records.
Provider-attributed reporting
See at a glance which SendGrid key or subuser sent a given event. Compare against other providers.
- You want a provider exit strategy without rewriting application code
- You run SendGrid and want redundancy across other providers
- You operate multiple SendGrid subusers and want unified control
- You need quota enforcement that SendGrid plans do not expose directly
- Some SendGrid features (Marketing Campaigns, stats UI) remain inside SendGrid — we orchestrate the send path
- Reputation accrues to SendGrid per IP/domain — Mailers.io does not override that
- Sub-processor constraints are yours to review on SendGrid side
Questions answered clearly.
Make SendGrid work harder. And stop being your only option.
Attach SendGrid to your routing pool, enforce quotas, and open a clean path to providers like SES, Mailgun, or SMTP.