Hi @stephanTVPC
Are you capturing the company name as a custom property in Klaviyo? If so, you can insert that into your email as a variable to display it.
For any recipients who have not submitted their company name, you can either add fallback text to that variable or, if that won't work well, include two text blocks in the email and use display logic: one block will appear with your text + the company name to those who have submitted it, and the other without the company name.
As for getting recipients who have not submitted their company name to add it, it's not possible for them to submit it directly in the email. That would best be done via the preference centre form. You could add that preference link to your ‘without company name’ text block
Happy to help out further with a ‘how to’ if you need that, and you confirm my understanding above.
Regards
Andy