Grafana Cloud vs Postmark
Fully-managed observability — Prometheus + Loki + Tempo + Grafana
vs. Reliable transactional email with fast delivery
Pricing tiers
Grafana Cloud
Free
Always free. 10k metrics series + 50 GB logs/traces/profiles + 3 users + 14-day retention.
Free
Self-Hosted (OSS)
Apache 2.0 / AGPL. Run Grafana + Mimir + Loki + Tempo yourself.
$0 base (usage-based)
Pro
$19/mo platform fee + usage-based overages. 10k metrics series + 50 GB included. 13-month metrics retention.
$19/mo
Enterprise
$25,000/year minimum. Custom retention, premium support, BYOC (Bring Your Own Cloud) option.
$25000/mo
Postmark
Free
100 emails/month forever. No credit card. Side projects and testing.
Free
Basic — 10k
10,000 emails/month. Overage $1.80/1k. Unlimited emails/day.
$15/mo
Pro — 10k
10,000 emails/month. Overage $1.30/1k. Inbound email + message streams.
$17/mo
Platform — 10k
10,000 emails/month. Overage $1.20/1k. Team collab, more domains.
$18/mo
Enterprise (>1.5M)
Custom for senders exceeding 1.5M/month.
Custom
Free-tier quotas head-to-head
Comparing free on Grafana Cloud vs free on Postmark.
| Metric | Grafana Cloud | Postmark |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Grafana Cloud · 16 features
- Alloy (OTel agent) — Distribution of OpenTelemetry Collector with Grafana additions.
- Application Platform — Infrastructure + k8s + frontend + cloud provider integrations.
- Beyla (eBPF auto-instrumentation) — Zero-code auto-instrumentation via eBPF for any language.
- Faro (RUM) — Frontend observability — traces, logs, Core Web Vitals.
- Grafana in Azure Marketplace — "Azure Managed Grafana" — Azure-native deployment.
- Grafana Incident — Incident management with Slack-native flows.
- Grafana OnCall — On-call scheduling + incident response (powered by Amixr).
- Grafana SLO — Service level objective tracking + error budget visualization.
- Grafana (visualization) — Dashboards, variables, alerting, annotations over any datasource.
- k6 (synthetic + load testing) — Load testing + synthetic monitoring. JavaScript-based scripts.
- Loki (logs) — Prometheus-inspired log aggregation with LogQL.
- Mimir (metrics) — Horizontally-scalable Prometheus-compatible TSDB.
- Pyroscope (profiling) — Continuous profiling (CPU, memory, etc.).
- Self-Host Option — Full OSS stack deployable in your infra.
- Tempo (traces) — High-scale distributed tracing with TraceQL.
- Unified Alerting — Grafana-native alerting across metrics, logs, traces.
Postmark · 12 features
- Activity Search — Full-text search over sent messages for 45-365 days.
- Bounce Handling — Automatic hard/soft bounce detection + suppression management.
- Broadcast Messages — Via separate Broadcast Message Stream. Bulk sends with throttling.
- DKIM + SPF — One-click verification + auto-renewal of DKIM keys.
- Inbound Email — Route inbound emails to your webhook. Parse attachments, threads.
- Message Streams — Isolate transactional from marketing for separate deliverability reputation.
- Open + Click Tracking — Configurable at template or send level.
- Raw API Access — 100+ endpoints for bounces, servers, tags, templates, stats.
- Servers — Multi-tenant isolation: each "server" has its own API token + reputation.
- Templates — Mustachio template language with variables, alias + versioning.
- Transactional Send — Reliable API for password resets, receipts, notifications. Sub-10s delivery.
- Webhook Events — Delivery, bounce, spam complaint, open, click, subscription change.
Developer interfaces
| Kind | Grafana Cloud | Postmark |
|---|---|---|
| CLI | Grafana Alloy (agent), grafana-cli | — |
| SDK | Faro Web SDK (RUM) | postmark-dotnet, postmarker (Python), postmark-go, postmark (Node), postmark-php, postmark-rails |
| REST | Grafana HTTP API, Loki Push API | Postmark REST API |
| OTHER | Prometheus Remote Write, Tempo OTLP | Inbound Email, SMTP Relay, Webhooks |
Staxly is an independent catalog of developer platforms. Outbound links to Grafana Cloud and Postmark are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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