I sent 50 emails. 12 bounced despite SMTP 250 OK.

I sent 50 emails. 12 bounced despite SMTP 250 OK. email, #api, #security, #webdev The 250 OK lie On March 14, my campaign hit a wall. I sent 50 cold outreach emails to hand-collected leads. Every single address had returned 250 OK during SMTP verification. Twelve of them bounced anyway. That's a 24% bounce rate from addresses that were supposed to... Weiterlesen