{"citations":{"source_mix":{"company_owned":24,"independent":23,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":36,"partial":11},"total_sources":47,"unique_domain_count":23},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Email Marketing Software with Superior Deliverability for High-Volume Senders","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","grok"],"predicate":"final_consensus_rank","qualifier":"high-volume email deliverability","subject":"Postmark","unit":"rank","value":5},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","grok"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Postmark","unit":"platforms","value":3},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-10-02","platform_support":["google"],"predicate":"fit_rating_count","qualifier":"good","subject":"Postmark","unit":"platforms","value":1},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-10-02","platform_support":["openai","anthropic","deepseek","grok","perplexity","kimi"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Postmark","unit":"platforms","value":6}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":4.666666666666667,"best_rank":1,"entity_id":"entity-001","entity_type":"company","final_rank":5,"name":"Postmark","platform_mentions":3,"platform_share":0.42857142857142855}],"identity":{"dataset_url":"https://businesssoftwareconsensusindex.com/datasets/marketing-automation-and-email-marketing-software/high-volume-email-deliverability/postmark.json","page_url":"https://businesssoftwareconsensusindex.com/marketing-automation-and-email-marketing-software/high-volume-email-deliverability/postmark","report_type":"fit_review","study_id":"MCI-STUDY-0AF986471DB0","title":"Postmark Review for High-Volume Senders"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","All included platforms evaluated fit, but platformmentions counts only platforms that named the entity during ranking discovery.","Do not resolve conflicting product names, pricing, or capabilities by guessing; describe the conflict and tell buyers what to verify.","The supplied URLs were collected from platform responses and were not independently validated by the writer stage.","Platform-reported research dates differ from the authoritative run date; disclose this as a methodology limitation.","Citations are platform-reported evidence, not independently verified facts. No-search model claims require explicit verification before being described as current facts."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Business Software Consensus Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-10-02 01:03:52.355104+00","research_date":"2026-10-02","source_snapshot_sha256":"b388743d76c241cb46cb427c7c8744b09c8c6e88a7e80bd0fb116b54b5d7a096","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":28,"qualified_finalists":10,"ranking_unit":"High-volume email sending platform"},"schema_version":4,"summary":"Postmark is a mixed fit for a company sending more than 500,000 marketing emails per month. Three of the seven platforms in this study named Postmark during the ranking stage, and all seven evaluated its fit. The strongest reason to consider it is infrastructure-led deliverability: separate broadcast and transactional streams, managed dedicated IPs at 300,000+ monthly messages, and automatic suppression of hard bounces, complaints, and unsubscribes. The main limitation is that Postmark is transactional-first: native list management and hygiene tooling are limited, high-volume pricing is…","target_buyer":"A company sending upward of 500,000 marketing emails per month is seeing declining inbox placement and needs stronger deliverability infrastructure.","topic":{"base_category":"Marketing Automation and Email Marketing Software","category_criteria":["inbox placement track record","dedicated IP availability","sender reputation monitoring","list hygiene tools","ISP relationship strength"],"geography":"United States","slug":"best-email-marketing-software-with-superior-deliverability-for-high-volume-senders","title":"Best Email Marketing Software with Superior Deliverability for High-Volume Senders","use_case":"high-volume email deliverability"}}