3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Bulk is email hosted by posteo: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment...
Change watch for is email hosted by posteo: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that chang...
Is the domain's email hosted by posteo? Looks up the MX records (Cloudflare DoH) and matches them against posteo's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliver...