Every campaign,
intelligently protected
PostMTA Hosted gives your email program the infrastructure layer it needs: intelligent warmup, real-time deliverability guardrails, complaint suppression, and deep analytics — so your campaigns actually reach the inbox.
5-stage delivery pipeline
From identity setup to continuous optimization — every stage is monitored, automated, and actionable.
Set up sending identity
Add and verify your sending domains. Configure DKIM, SPF, and DMARC records using our guided DNS checklist. Assign IPs and warming policies.
Intelligent warmup
New IPs and domains enter the warmup ladder automatically. PostMTA gradually increases volume based on reputation signals from major inbox providers.
Pre-flight checks
Run predictive placement checks, spam score analysis, and list hygiene validation before launch. Block suppressions and fix authentication issues proactively.
Execute campaign
Inject via API or SMTP with full retry logic, rate shaping, and real-time event streaming. Tracking domains rotate automatically across the send.
Analyze and improve
Review delivery rates, placement scores, and engagement metrics. AI surfaces underperforming segments and recommends list hygiene and timing improvements.
Built for deliverability-first teams
Nine interlocking capabilities that work together to protect and grow your sender reputation.
Intelligent Warmup
AI-driven warmup ladders that automatically scale your sending reputation. New IPs and domains ramp from 100 emails/day, doubling every 2 days, reaching full volume safely.
Deliverability Guardrails
Real-time checks before every campaign: spam score thresholding, blackist monitoring, DKIM/SPF alignment verification, and volume anomaly detection.
Complaint Suppression
Automatically sync FBL (Feedback Loop) complaints from Gmail, Yahoo, and Outlook. Suppressed addresses are blocked at MTA-level before injection — never billed.
Predictive Placement Checks
Seed list–driven inbox placement forecasts across Gmail, Outlook, Yahoo, and Hotmail before you launch. Get a deliverability score and actionable recommendations.
Gmail Postmaster Tools
Native integration with Gmail Postmaster API. Track spam rate, domain reputation, and authentication results directly in your PostMTA dashboard — no manual scraping.
Variants + AI Assistance
Run A/B/X variant campaigns with automated winner detection. AI subject line scoring, send-time optimization, and content recommendations powered by your sending history.
Campaign Analytics
Full-funnel visibility: injection → delivery → open → click → bounce → complaint. Exportable CSVs, webhook delivery events, and retention up to 90 days.
Tracking Domain Rotation
Rotate across multiple tracking domains to prevent pixel blocking and preserve sender reputation. Automatic deprioritization of domains flagged by inbox providers.
Operational Alerts
PagerDuty, Slack, and webhook alerts for bounce spikes, complaint surges, credit low warnings, and delivery failures. Configure per-workspace thresholds and escalation chains.
Intelligent Warmup
Rather than a simple volume ramp, PostMTA's warmup engine monitors actual delivery feedback — bounce rates, FBL complaints, and Postmaster reputation — adjusting the ladder in real time.
- Automated 14-day ladder from 100 → full volume
- Reputation-aware acceleration or hold-back
- Separate IP and domain warmup tracks
- Pause and resume with state preserved
Complaint Suppression
Gmail, Yahoo, and Outlook FBL complaints are fetched and processed automatically every hour. Suppressed addresses are blocked at MTA injection time — zero cost, fully compliant.
- Gmail FBL via Gmail Postmaster API
- Yahoo + Outlook via standard FBL endpoints
- Suppression at SMTP layer (pre-injection)
- Audit log for every suppression event
Predictive Placement
Our seed list network spans Gmail, Outlook, Yahoo, and Hotmail. Run a pre-flight check and get an inbox placement score with per-provider breakdown and specific remediation steps.
- Placement scores across 4+ major providers
- Spam score simulation before send
- Authentication health check (DKIM/SPF/DMARC)
- List quality and hygiene recommendations
Full-funnel campaign analytics
From the moment an email is injected to the final engagement event — every step is tracked, stored, and queryable. Export raw event streams via webhook or download CSV summaries on demand.
Campaign Performance
Last 30 days
98.2%
Delivery rate
34.7%
Open rate
2.1%
Complaint rate
Your next campaign deserves better infrastructure
Start with a 7-day Growth Scale trial for $5. No credit card required.