new2일 전· 1 sources
I sent 50 emails. 12 bounced despite SMTP 250 OK.
Why it matters
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 sing...
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