Email Platform with Built-in Reputation Protection
Transactional and promotional email infrastructure with reputation management built in. Domain health scoring, graduated protection, and smart warmup at every layer.
Transactional Email
REST API and SDKs for password resets, order confirmations, OTPs, and application notifications. Goes through a priority queue, completely isolated from marketing traffic.
- Priority delivery queue
- Live event tracking
- SPF/DKIM/DMARC authentication
- Sub-second processing
- REST API & SDKs
- Detailed delivery logs
Marketing Email
Campaign management with Reputation Shield protection. Activity-level isolation ensures one campaign never damages your domain health.
- Visual template builder (Advanced+)
- Audience segmentation
- A/B testing
- Campaign Autopilot scheduling
- Engagement tracking
- Reputation-aware sending
Integrate with Your Existing Systems
- RESTful API
- Multiple SDKs
- Webhook support
- Developer tools
REST API
Simple HTTP requests
SDKs
Multiple languages
Webhooks
Live event callbacks
Templates
HTML & visual editor
Reputation Management, Built In
The system tracks bounce rates, block signals, and ISP complaints across your domains. When something looks off, sending speed adjusts on its own.
Domain Health Score
A 0-100 score for each domain, updated continuously. Blends ISP signals, engagement data, and historical performance into a single number.
Graduated Protection
Five levels from monitoring to full pause. The response matches the severity: a small bounce spike gets a slowdown, not a shutdown.
Per-Activity Isolation
Reputation is tracked per campaign, per domain, and per account. A bad campaign gets throttled on its own without dragging down the rest.
Gradual Recovery
After a freeze, sending resumes at 25% and ramps up in stages. Each step requires clean metrics before capacity increases.
Customer Reply Management, Built In
When customers reply to your emails, Smart Inbox captures and organizes the conversation. Threaded views, custom labels, and full reply/forward.
- Threaded conversations with full history
- Custom labels and color-coded organization
- Reply, reply-all, and forward from dashboard
- Attachment handling and file management
- Unread tracking with live notifications
- Reply analytics and response metrics
Thanks for the quick response! The integration is working perfectly now...
Re: Welcome to sendmsg.io — Looking forward to trying the Campaign Autopilot!
Campaign Scheduling on Autopilot
Define your campaign rules once. Autopilot picks the contacts, respects your domain limits, and rotates templates based on what's actually getting opens.
Sequential Journeys
Enroll contacts in multi-step email sequences. Configure intervals, engagement conditions, and exit rules. Contacts move through on their own.
- Multi-step sequences with configurable intervals
- Automatic progression based on engagement
- Exit on bounce or complaint conditions
- Daily contact enrollment
- Per-step retry mechanics
Smart Rotate
Run campaigns continuously with template rotation. The system tracks engagement and shifts weight toward your best-performing content over time.
- Template performance optimization
- Weighted random or equal distribution
- Engagement-based template selection
- Automatic domain limit allocation
- Reputation-aware scheduling
Everything for Reliable Email at Scale
Security, deliverability, and transactional priority across every plan.
Email Security
Authentication and access controls on every plan
- SPF/DKIM/DMARC
- TLS encryption
- API token security
- WAF protection (Advanced+)
Transactional Priority
Time-critical emails are never throttled
- Priority delivery queue
- Never throttled by reputation
- Isolated from promotional
- Sub-second processing
Deliverability
Tools that keep your emails landing in the inbox
- Smart domain warmup
- Bounce handling
- Suppression lists
- ISP feedback loops
Ready to Integrate?
REST API, SDKs for 4 languages, SMTP relay, and webhooks. Reputation protection is part of the sending layer, not a bolt-on.