Improve email deliverability with ESP matching
Analyze 30+ ESPs and 40+ spam protection tools with GetESP. Upload emails, get insights, and boost deliverability by sending from the right ESP.
GetESP detects spam protection tools (Proofpoint, Mimecast, Barracuda, etc.) protecting business domains. Users can prioritize sending to unprotected ESP contacts first and avoid wasting sending limits on addresses that may be blocked entirely by enterprise security filters.
Emails sent within the same ESP have lower latency and faster processing. GetESP's ESP matching strategy ensures recipients receive messages without unnecessary delays by routing them through the same provider infrastructure.
GetESP identifies the ESP (Gmail, Outlook, Yahoo, etc.) of each recipient and detects spam protection tools in use. By segmenting lists by matching ESP and sending from the same provider, users achieve higher inbox placement because Gmail prefers Gmail senders, Outlook prefers Outlook senders, and authentication issues (SPF, DKIM, DMARC) are minimized.
GetESP reveals whether recipients use Gmail, Outlook, or other ESPs, and identifies active spam protection tools. This insight helps users understand if poor deliverability is due to ESP mismatch, authentication failures, or enterprise-level spam filtering, enabling targeted fixes.
Users upload a CSV with email addresses and domains; GetESP analyzes each address and returns a report showing which ESP each recipient uses. The tool supports 30+ ESPs and 15+ spam protection tools, enabling users to download segmented lists grouped by provider for optimized campaign routing.