Short answer

Pop-ups now live in Marketing > CTAs. HubSpot's KB lists pop-up box, slide-in (a banner that slides in from a corner) and sticky banner types, which you can also trigger when a visitor clicks a button. You can hide them on small screens. If one does not appear, check the targeting, the trigger and whether it was hidden for that screen size.

1. The CTA tool

My demo portal has one draft pop-up in the CTA list.

CTAs list with Create and Create with AI buttons, a Type filter and a draft pop-up — Create (1), the Type filter (2), and a draft pop-up (3).

2. Old CTAs

Legacy CTAs are a separate tool. See legacy vs new CTAs.

3. Forms inside pop-ups

A pop-up can include a form. Spam controls still apply. See form spam settings.

Sources

HubSpot Knowledge Base: Create calls-to-action (CTAs)
HubSpot Knowledge Base: Add calls-to-action (CTAs) to your content

Where did pop-up forms go? Pop-ups, slide-ins and banners are now CTAs

Short answer

1. The CTA tool

2. Old CTAs

3. Forms inside pop-ups

Sources

New field notes by email

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