How do MBPs share spam data (industry collaboration)?

MBPs share spam intelligence through formal and informal channels. **M3AAWG** provides structured information sharing among members. Blocklists aggregate and distribute threat data that multiple providers consume. Direct relationships between security teams enable rapid response to emerging campaigns.

Shared data includes: known spam source IPs, malicious URL patterns, **phishing** campaign signatures, and compromised sender indicators. When **Gmail** identifies a new **phishing** campaign, that intelligence can reach other providers through shared feeds and industry channels.

This collaboration means reputation problems propagate. A spam complaint spike at **Gmail** can trigger blocklist attention that affects **Microsoft** delivery. Conversely, establishing good reputation with one major provider often helps with others. The ecosystem is more connected than it appears.