Contributor I

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

1 reply
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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

Temi O.

Community Manager

Hi @thomas83 ,

I can confirm that a dedicated IP is not a universal requirement for sending to T-Online.

That said, I want to be careful about framing this as a general guarantee that sending will always work without one. The clearest documented guidance is still to have double opt-in in place, along with proper sender identification and aligned SPF, DKIM, and DMARC.

Temi@Klaviyo

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