What it is
NoSolicitado (Spanish for ‘unsolicited’) is a blocklist operated by a Latin American email security community. It covers IP addresses sending spam to Spanish and Portuguese-language email users and domains. Deployment is concentrated in Spain, Mexico, Brazil, and other Latin American and Iberian countries.
How it affects SMTP delivery
Primarily relevant for deliverability in Latin American and Iberian markets. Used as a spam scoring input in regional mail infrastructure.
What causes a listing
Listings occur from spam trap hits on NoSolicitado-monitored addresses.
How to get removed
Submit a manual removal request via the NoSolicitado website.
For the full reference catalog, see the email blocklist directory.
Delisting process in detail
The NoSolicitado blocklist targets spam sources observed in the Spanish-speaking mail community (Spain, Latin America). Delisting is handled through the operator’s portal, which offers Spanish and English support. Response times are typically within 24-72 hours for well-documented requests. Automatic decay applies when the observed spam pattern stops. NoSolicitado provides regional signal for senders reaching Spanish-speaking recipients.
Prevention practices
NoSolicitado prevention follows standard anti-abuse fundamentals. Because the blocklist is regionally focused, senders reaching Spanish-speaking recipients (Spain, Mexico, Argentina, Colombia, Chile, other Latin American markets) should monitor it specifically. Authentication (SPF, DKIM, DMARC), list hygiene, and confirmed opt-in are the primary defenses. Spanish-language spam campaigns are particularly likely to trigger NoSolicitado listings.
Common listing causes
NoSolicitado listings correlate with observed spam sending to Spanish-speaking recipients. Common patterns include purchased lists containing Spanish and Latin American addresses, compromised shared-hosting accounts blasting Spanish-language spam, and coordinated campaigns targeting the region. For legitimate senders reaching Spanish-speaking audiences, confirmed opt-in is essential; purchased lists in Latin America frequently contain honeypots that trigger NoSolicitado promptly.
Related blocklists
Regional Latin American and Spanish blocklists include NoSolicitado and various smaller lists maintained by regional ISPs. Enterprise senders reaching Spanish-speaking recipients should monitor these regional lists alongside Spamhaus and Barracuda for comprehensive coverage. Regional listings can significantly affect delivery in the target region even when global blocklists remain clean; this is particularly true for Latin American ISPs that rely more heavily on regional signals.
About the Author
Alaa · LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. I’ve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
About SMTPedia
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