Everything in Delivery Center,Plus the Heavy Hitters
When standard deliverability tools aren't enough: solve the strict 10 DNS lookup limit with Dynamic SPF Flattening, test inbox vs. spam placement before sending with Seed Testing, and hunt unauthorized spoofers with Threat Investigator.
Dynamic SPF Flattening
RFC 7208 strictly limits SPF records to 10 DNS lookups. If your domain uses Google, Zendesk, Salesforce, HubSpot, and SendGrid, your record quickly reaches 12–15 lookups, causing a fatal PermError that dumps emails straight into Spam.
- Automatically consolidates nested includes into clean CIDR IP subnets
- Continuously polls third-party SaaS vendors and auto-updates IPs every 15 mins
- Keeps DNS lookups at 1–2, ensuring 100% SPF pass rate at Gmail & Outlook
Test Your SPF Lookup Count
Enter your domain to inspect current DNS lookup depth and preview flattened output.
Inbox Placement Seed Testing
Send your marketing or transactional email to our seed list of 40+ real test mailboxes before broadcasting. Discover exactly where your message lands across Gmail, Outlook, Yahoo, and Apple Mail.
Advanced Threat Investigator & Spoofer Radar
Even small companies have hundreds of unauthorized emails sent in their name every month by malicious phishing rings. Delivery Center Plus pinpoints exactly who is spoofing your brand, their hosting provider ASN, and geographic origin.
Geo-IP & Autonomous System Mapping
Attribute rogue sending IPs to specific datacenters (OVH, DigitalOcean, Linode) or botnets.
Automated Abuse Escalation
Dispatch formatted RFC complaints directly to the offending ISP's network operations center.
Delivery Center Plus Pricing
Uncapped deliverability power with dedicated SLA and technical engineering support.
Monthly prices, billed monthly.
Delivery Center Plus Pro
For high-growth apps & ecommerce brands
- Up to 5 monitored domains
- 2,500,000 DMARC email volume
- Dynamic SPF Flattening with auto-sync
- 50 Inbox Placement Seed Tests / mo
- Threat Investigator & Geo-IP Radar
- BIMI SVG & VMC verification
- Dedicated delivery specialist
Delivery Center Plus Scale
For multi-brand agencies & high volume
- Up to 15 monitored domains
- 10,000,000 DMARC email volume
- Dynamic SPF Flattening (unlimited)
- 150 Inbox Placement Seed Tests / mo
- Round-trip mailflow latency checks
- Dedicated IP address warmup monitor
- 1-hour SLA emergency response
Plus Enterprise
Tailored clusters, custom seed pools & SLA
- Unlimited domains & email volume
- Custom private seed list mailboxes
- Automated SPF flattening API access
- Dedicated MTA Deliverability Engineer
- SOC2, BAA, & custom master contracts
- 24/7 direct phone & Slack escalation