Staxly

Postmark vs Grafana Cloud

Reliable transactional email with fast delivery
vs. Fully-managed observability — Prometheus + Loki + Tempo + Grafana

Postmark website ↗Grafana Cloud website ↗

Pricing tiers

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
Postmark website ↗

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
Grafana Cloud website ↗

Free-tier quotas head-to-head

Comparing free on Postmark vs free on Grafana Cloud.

MetricPostmarkGrafana Cloud
No overlapping quota metrics for these tiers.

Features

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.

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.

Developer interfaces

KindPostmarkGrafana Cloud
CLI—Grafana Alloy (agent), grafana-cli
SDKpostmark-dotnet, postmarker (Python), postmark-go, postmark (Node), postmark-php, postmark-railsFaro Web SDK (RUM)
RESTPostmark REST APIGrafana HTTP API, Loki Push API
OTHERInbound Email, SMTP Relay, WebhooksPrometheus Remote Write, Tempo OTLP
Staxly is an independent catalog of developer platforms. Some links to Postmark and Grafana Cloud may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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