Yes, because they are publicly accessible. White label users can activate the indexing of their landing pages by search engines who respect the noindex meta tag. This option is available in the landing page editor and it is set to no-index by default.
Bots who do not respect meta tags or fake their user agents may crawl your landing pages. This is more likely to happen, if your pages are linked from any other public website or you share them on social media channels like Facebook or Twitter.
When we identify bots crawling a landing page, we hide e-mail addresses to avoid you being spammed.
You have the option to set a password for a landing page so bots cannot crawl the content behind the password box.