Subaddressing: What Plus Addresses Tell Senders
user+anything@gmail.com is one mailbox wearing labels. How subaddressing works, why blocking it backfires, and what plus addresses reveal about your data flows.
#Validation
2 articles with this tag
Email Validation Services: What They Can and Cannot Do
Validation APIs verify syntax, domains, and mailbox existence. Where each check works, where catch-alls and traps defeat them, and where validation belongs in your stack.