A campaign holds separate content for every language you give it. One campaign can carry German and English versions of the same message, so guests receive it in a language they read rather than in whichever one you wrote first.
How the content is arranged
On the 2. Content step, the left panel is a small tree. A channel sits at the top, and the languages you have added to it sit underneath. One of them is marked (Default).
Each language is its own piece of content. Editing the German version changes nothing about the English one and vice versa.
Adding a language
Open the campaign and go to the 2. Content step.
Open the three-dot menu on the channel, not on a language.
Choose Add language and pick the language.
Select the new language in the panel and write its content.
A newly added language starts empty. Rather than writing it from scratch, use Copy template from this campaign on the new language to bring the existing version across and then translate it in place, which keeps the layout and images intact.
See Reuse a message template inside an existing campaign.
Changing which language is the default
Open the three-dot menu on the language you want to promote and choose Make default language.
You will only see that option on a language that is not already the default. The language currently marked (Default) has neither Make default language nor Remove language in its menu, which is the product stopping you from leaving the campaign with no default at all.
Removing a language
Open the three-dot menu on the language and choose Remove language. As above, this is not available on the default language, so promote a different language first if the one you want rid of is currently the default.
Removing a language removes the content written for it.
Before you publish
Make sure every language you have added actually has content in it. An empty language does not fall back to the default. A guest who resolves to it fails with Campaign template not found on the Schedules tab, and the Review & Publish step warns about empty templates before then.
If you use several languages, the Prioritize Language setting under Advanced on the Review and Publish step affects how language is weighed against channel when Bookboost decides how to reach a guest.
Getting help
Open Talk to Us in the left menu of the platform, or email [email protected]. Tell us the campaign name and the language you are trying to add or remove.