Built for the people who run email.
Most platforms hide the ugly truth: bounces, blocklists, and queue depth. BlacklistGuard surfaces them — with the controls you need to act.
Operator-grade infrastructure
Multi-tenant SMTP queues, per-IP throttling, automatic VMTA pool warmup, RFC-compliant bounce parsing.
- Direct MX delivery
- DKIM key rotation
- MTA-STS + TLS-RPT
Visibility, not vibes
Real-time dashboards for queues, IPs, and reputation. DMARC aggregate reports parsed and humanized.
- Live throughput graphs
- DMARC aggregate viewer
- Per-domain reputation
Built like a developer tool
Webhooks, REST API, Terraform provider, and a CLI that actually works.
- Idempotent REST API
- Terraform + CLI
- Webhooks for everything
Everything in one place.
More than an MTA. BlacklistGuard is a full email platform — from list building and campaigns to validation, deliverability, and blacklist monitoring.
Less spreadsheet. More signal.
See queue depth, retries, deferrals, and reputation — across every tenant — in one view.
We replaced two SES gateways and a Mailgun account with BlacklistGuard. Bounce rate dropped 40% the first week — turns out we had no idea what was actually happening before.
An API that feels like infrastructure.
Idempotent sends, bulk endpoints, webhooks for every event, and a CLI you can pipe to.
- REST API + native libraries (Go, Node, Python, Ruby, Elixir)
- Webhooks signed with HMAC, replayable from the dashboard
- Terraform provider for domains, IPs, and routing rules
- CLI: blacklistguard logs --tail, queue inspect, dkim rotate
import { BlacklistGuard } from "blacklistguard";
const ef = new BlacklistGuard(process.env.BLACKLISTGUARD_KEY);
await ef.send({
to: "ada@example.com",
from: "ops@northwind.co",
subject: "Welcome aboard",
template: "tpl_welcome_v3",
variables: { firstName: "Ada" }
});