I get around 5 "Mail Delivery System" mails with failed mails, what i wonder I don't see the "Warmup filter tag" is the mails?
- Is this also something that you experience?
- Is this normal (ok i realize that some stop using the system)?
- Does this not hurt our domain reputation?
On instantly, the warm-up goes to 50 emails, should I match those setting to reachinbox?