ConvertLoop vs. MailOptin Comparison Chart

EngageBay is a simple, affordable, integrated, all-in-one marketing, sales and service automation platform with free CRM, built to grow small businesses and startups. The marketing automation suite helps you save time, nurture your audience and automate routine, manual tasks. With the free CRM and sales automation, you can organize all your email contacts, track deals, and the sales pipeline to grow your sales. Further, you can build meaningful customer relationships that stay for life. And finally, with the free live chat and helpdesk features, provide real-time assistance to convert visitors to happy customers. Track, prioritize, and solve customer support tickets in minutes.

Designed specifically for nonprofit organizations and membership associations, Neon CRM is a constituent management platform that offers a comprehensive view of supporters and members, which allows you to engage more meaningfully and bring in more revenue. With Neon CRM you can easily manage fundraising campaigns, events, communications, and more, while gaining valuable insights into your organization through intuitive reporting and administrative tools. Create an enhanced and memorable generosity experience with unlimited forms and templates, popular payment methods, and personalized emails. Streamline your organization's processes by automating email marketing, workflows, volunteer management, and payment processing, so that you can spend less time on administrative tasks, and focus more on driving your mission forward.

Klaviyo is an all-in-one platform that makes it easy for B2C businesses grow by integrating marketing, analytics, and customer service in one solution. Powered by unified data and built-in AI, it's faster and easier than ever to create personalized, lasting customer relationships. Klaviyo unifies your customer profiles by capturing every event, and then lets you orchestrate your email marketing, SMS marketing, push notifications, WhatsApp, and RCS campaigns in one place. Klaviyo AI helps you build audiences, write copy, and optimize — so you can always send the right message at the right time, automatically. With real-time attribution and insights, you'll be able to make smarter, faster decisions that drive ROI. Trusted by more than 170,000 businesses, Klaviyo can grow your business while keeping operations simple and customer relationships strong.

GetResponse provides all-in-one marketing software that empowers marketers, solopreneurs, coaches, creators, and small business owners with affordable, easy-to-use tools for email marketing, marketing automation, and content monetization. With over 25 years of expertise, GetResponse goes beyond email with tools to help grow and engage audiences, create and sell courses, and turn ideas into income. It’s the go-to solution for building a personal brand, selling products and services, and fostering a loyal community.

Shape is purpose-built sales and marketing automation software that comes with pre-built features that can be configured for any business. The easy-to-use interface empowers your teams and consolidates all aspects of your business in one AI platform. Shape provides a collaborative space for your teams to stay aligned and efficient in everything they do, whether it's streamlining your sales pipeline, engaging more prospects with marketing sequences and digital ads, nurturing customer relationships, communicating seamlessly, or tracking projects. Start growing your revenue with Shape's suite of services today.

WiseStamp is the leading email signature management tool. Unify your branding and boost your marketing with a company-wide email signature creation and management solution. Create professional email signatures in minutes with our award-winning signature generator, perfect for professionals and companies of all sizes. Achieve your goals by adding rich features like a CTA button, banner, video, disclaimer, scheduler, and more. WiseStamp auto embeds your signatures in your employees’ emails, whether it’s Gmail, Outlook, or any other platform, and gives you full control of all signatures from a simple dashboard.

Knak is the no-code platform that empowers self-sufficient marketing teams to create beautiful, on-brand emails and landing pages — without relying on developers or agencies. Built for speed and collaboration, Knak streamlines campaign production with modular templates, real-time editing, simple collaboration, and seamless integrations with leading MAPs like Adobe Marketo Engage, Salesforce Marketing Cloud, Oracle Eloqua, and more. Whether you're supporting global teams or launching fast-turn campaigns, Knak helps you go from brief to build in minutes—not weeks. Say goodbye to bottlenecks and hello to marketing agility.

Send messages your customers want to read (and act on). Attentive’s AI-powered SMS & email platform helps retail enterprises to e-commerce entrepreneurs engage customers and drive billions in revenue. We'll help you target the right audience and measure your most important metrics to optimize your marketing program. And with over 100 flexible integrations, you can seamlessly connect to the rest of your marketing stack. We partner with industry innovators in retail & e-comm, food & beverage, and media & entertainment. Attentive’s AI-powered SMS & email platform will double your ROI in just a few months. Learn more about our free 30-day trial.

Odoo is a fully integrated, customizable, open-source software packed with hundreds of expertly designed business applications. Odoo’s intuitive database is able to meet a majority of business needs, such as: CRM, Sales, Project, Manufacturing, Inventory, and Accounting, just to name a few. Odoo is an all-in-one software solution designed to meet the needs of companies, regardless of their size (or budget). The unbeatable, seamless nature of Odoo helps businesses become more efficient by reducing redundant manual processes, which helps companies save countless hours of labor. Every module is interconnected to provide a fully-integrated experience from app to app, and users can automate many processes that would’ve otherwise required manual inputs into multiple applications. Odoo keeps all business functions in one place, allowing teams to collaborate with other departments from one unified platform in the most efficient way possible.

Convoso: The Best F 'ING Dialer for sales pros who mean business. Since 2006, Convoso has been flipping the script in the outbound sales, delivering an AI-powered sales platform that doesn't just help you grow—it helps you dominate. We’re not here to blend in; we’re here to stand out and help you do the same by driving profitability, connecting with more prospects, and crushing engagement at scale. And yeah, we’ve got compliance with TCPA and all the regs covered—so you can focus on what matters: closing deals. Convoso is trusted by thousands of customers across industries like insurance, financial services, solar, home services, BPOs, lead gen, and legal sectors. We’re not just another dialer. We’re the dialer built for closers.