List bombing: What does it mean and how to avoid it?

Recently, there’s some talk about list bombing. What does this actually mean?

While ISPs concentrate on attacks from a single IP (or IP range) or sending domain, listbombing uses various subscription forms for sending just a few mails from each.

Problem for the targeted address is, that a lot of mails are coming in in a small amount of time without consistent pattern – goal is to make the address unavailable for a specific time.

DOI doesn’t help here as well, because the DOI confirmation mail itself can be part of the attack and be used for it. Read more ›

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Deliverability.TV – Episode 025: “Growth Hacking..Carnival”

This episode we discuss growth hacking in general and how it fits in with email marketing. Our guest Eric also discusses the carnival in Brazil and Florian talks of the carnival in Cologne..check it out

Starring: Anthony Mitchell, Florian Vierke
Guest: Eric Galembeck
Edits: Anthony Mitchell

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Episode 024: “Deliverability Community in Brazil”

We’re meeting Érick Galembeck, Deliverability Manager at Splio in Brazil. While he’s not sure about the pronunciation of his name, Érick is giving us some insides in the ISP and Deliverability landscape overseas and existing local initiatives and communities.

The episode references a bit the blog post, that Érick has published a few weeks ago on

This is the first part of a longer interview. The next part will shed some light on the topic “growth hacking” which seems to be a common practice in Brazil.

Stay tuned!

Starring: Anthony Mitchell, Florian Vierke
Guest: Érick Allan Galembeck
Edits: Florian Vierke
Music: The Rehats (

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Deliverability.TV – Episode 023: “GDPR”

Anthony and Florian are discussing a hot topic today: GDPR (General Data Protection Regulation). What will happen on May, 25th of this year? Are companies ready, and if not – what needs to be done in the remaining 2 months?

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Deliverability.TV – Episode 022: “Happy New Year”

Welcome to 2018, 3 months on. This is a recap of 2017 and what’s planned ahead. Florian stop drinking please, we’ve missed you

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Deliverability in Brazil

The Carnival, the Lung of Earth, and of course football, that’s what comes to mind when we think about Brazil. However the view is slightly different from the inside, and specifically in email marketing.


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