postbox_tools

Current plans

Direct accepted alternatives

MX Probe · job 77%Domain Health · job 74%dechonet · job 72%dns_doctor · job 78%giggal · job 74%email_verification · job 72%InboxGuard · job 80%B2A Email Deliverability, MX, SPF & DMARC Verifier · job 82%firstsales_public_mcp · job 80%MailTester · job 76%mailvalid · job 73%easy_email_verification_email · job 75%BounceLens Email Check · job 72%demisignal · job 73%PingValid · job 73%uChecker MCP Server · job 76%email_verifier · job 73%qualisend · job 80%domain_trust_check · job 75%MAILTYPE · job 77%mailx_tools · job 87%p_d_tashev_email_verifier · job 76%inbox_check · job 78%Emaillistchecker.io Agent Gateway · job 71%Percentages are graph-similarity metadata, not suitability scores. A graph edge answers “is it connected” — plan fit and comparable cost are checked below.

Inspect histories

Pick the exact reference and alternative series. Each history is separate; gaps stay gaps.

This view calls the same get_evidence tool your agent would — chart, table and MCP response describe the same records. Watch the reference series