[Oletros]

> The bigger question is whether doing that to show ads is legal or not

What is the difference between "opening them" for full text search or spam filtering and "opening them" to use them for advertising?

[dangelov]

No difference in the opening. The difference is in what they do with the data, which is what I believe the lawsuit is about.

[Oletros]

If this is is what the lawsuit says: “unlawfully opens up, reads, and acquires the content of people’s private email messages”

There is no difference between opening for spam filtering from opening for ad serving