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t-online 2026 on klaviyo - still the same problem and nobody talking about it

  • July 24, 2026
  • 0 replies
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Hello.

We try to get feedback from klaviyo sale team, but after sending the question twice nobody replied.
We simply have this question:

There was a time newsletter from klaviyo was blocked by t-online postmaster in general.
Without an dedicated IP that is is negative for sender without highsending volume there is no chance to reach the inbox of t-online.de

We see now the help guide regarding t-online and klaviyo. But its still not clear:
Is klaviyo not blocked anymore by t-online in general? So if we set spf, dkim/dmarc the newsletter will work in general also without dedicated IP?
 

BR
Tommy