Question: I need a service that can help me capture contacts through sign-up forms, popups, and landing pages, and also provide analytics-based suggestions to refine my results.

If you want a full-featured tool to capture contacts and get the most out of your marketing, Unbounce is a great option. It's got a powerful landing page builder with AI-powered conversion rate optimization, A/B testing and integration with Google Analytics, Hubspot and Salesforce. The company's software lets you build high-performing landing pages, popups and sticky bars without requiring technical expertise, and customers see an average 30% boost in conversions.

Another top contender is Surface, an AI-powered tool to capture leads and then nurture them. It makes it easy to build multi-step forms and capture partial response data. It's got serious analytics and more than 2000 integrations so you can automate lead capture and conversion. It's a good tool for businesses like real estate and law firms, where you can get qualified leads and inbound funnels that are customized for each prospect.

If you just want a landing page tool, Instapage has a simple interface that's geared for personalization. It's got A/B testing, AdMap and AI content creation abilities so you can build and optimize landing pages fast. Instapage also has more than 500 templates you can customize and multiple pricing tiers, so it's good for marketing teams that want to improve conversion rates without relying on developers.

Last, GetResponse is an all-in-one email marketing tool that includes contact capture abilities along with AI-powered newsletters and email autoresponders. It's got good analytics and marketing automation campaigns, too, so it's good for building and growing your email list. GetResponse promises big list growth and reliable email deliverability, and it's got a 5-star customer support team.