Hi @Irrra, 

Thanks for sharing your question in the Community! 

The hide/show block is a great feature of our template editor that allows you to target your email content based on information about your subscribers, so each recipient has a highly personalized marketing experience. Unfortunately, there is no way to hide a block in your email template based on the inbox provider. The only way you can use the Hide/Show for this is if you were to target by email domain. For example, if you wanted to hide a block from gmail users you would use the code below: 

not "gmail" in person|lookup:'email'

For more information on other data you can use for the Hide/Show Block feature, I’d recommend checking out these Community posts. 

Thanks for sharing your question with the Community!

-Taylor