Can you recommend a popup builder for capturing subscribers with low-friction signup on mobile?

Yes — for low-friction mobile signup, I’d prioritize a popup builder that supports:

• Mobile-specific targeting
• Lightweight, fast-loading forms
• Smart triggers like exit intent, scroll, or time delay
• One-field or tap-to-confirm flows
• Native integrations with your email/SMS platform

Good options to consider

1. OptinMonster

• Strong targeting and triggering controls
• Good mobile rules and device-specific campaigns
• Works well for email capture with minimal friction

2. Sleeknote

• Very polished mobile-friendly popup experiences
• Great for less intrusive forms and inline-style overlays
• Strong UX focus for ecommerce and content sites

3. Privy

• Popular for ecommerce
• Easy to build simple popups and forms
• Supports mobile targeting and cart-related triggers

4. ConvertFlow

• Better if you want more personalized or multi-step signup flows
• Can reduce friction by asking one step at a time

5. Hello Bar

• Simple and lightweight
• Best if you want a very low-friction bar or banner instead of a full popup

What I’d recommend for mobile specifically

If your goal is maximum signup rate with minimal annoyance on mobile, I’d lean toward:

• Sleeknote if design/UX matters most
• OptinMonster if you want the most control
• Hello Bar if you want the least intrusive option

Best practices for low-friction mobile capture

• Ask for email only at first
• Use a single CTA
• Avoid large popups that cover the whole screen immediately
• Trigger after scroll or delay, not on page load
• Keep typing minimal; consider SMS or one-tap options if relevant
• Make sure it’s easy to close and doesn’t reappear too often

If you want, I can also recommend the best popup builder based on your platform (Shopify, WordPress, Webflow, custom site, etc.) or compare 2–3 tools side by side.