Compare Maileroo vs. UniOne

We work with you to make sure your inbox providers don't send spam emails to your email. In just a matter of weeks, our clients have seen their open rates increase by more than DOUBLE! High-engagement recipients open emails and scroll down as they read. This should be done for almost all emails that are opened, as long as the content is not longer than the page. If a recipient takes an email from spam and goes out of their way, it is telling the inbox provider that they made a mistake. Inbox providers will be able to tell if you move an email from the promotions folder into the primary inbox that you don't agree with their sorting criteria. It and other similar emails should go directly to the primary mailbox. It shows that the recipient is interested in your email content. The inbox provider can interpret this as "This email is extremely important, please do not send it to spam."

Reliable cloud-based email hosting includes features such as spam filtering, antivirus protection, ample storage, and webmail access. It seamlessly integrates with Outlook as well as various other POP3/IMAP clients. For users with high sending needs, it offers a robust SMTP service designed for responsible senders. Additionally, there is an outbound relay service tailored for transactional emails, marketing campaigns, newsletters, and diverse applications. The infrastructure supports dedicated email servers, clustering, and multiple IP load balancing to accommodate high-volume senders effectively. With a fixed monthly fee, users benefit from unlimited sending capabilities and reputation monitoring. Greatmail stands out as an email service provider (ESP) focused on delivering business-class email hosting, SMTP hosting, and specialized email servers. Furthermore, for ISPs, software developers, and cloud architects, we also create custom solutions featuring dedicated IP servers and load-balanced configurations with multiple servers to meet specific processing needs. This commitment to adaptability ensures that all clients receive the best possible service, tailored to their unique requirements.

Klaviyo empowers businesses to create smarter digital relationships by transforming customer data into meaningful, impactful experiences. From email and SMS to web interactions and reviews, Klaviyo makes it easy for B2C brands to engage customers at every touchpoint. Trusted by over 157,000 businesses, Klaviyo helps drive faster, more efficient revenue growth. Klaviyo’s 350+ integrations making getting started easy for marketers. Some key features of the platform include predictive analytics, AI automation, optimized templates, A/B testing, and intuitive segmentation and email flows to ensure marketers are reaching their audience with the right message at the right time. The solution also supports integration with payment processing and point of sale (POS) software solutions, such as Magento, Shopify, and WooCommerce.

SalesTarget.ai is the ultimate all-in-one sales game-changer designed to help you discover, engage, and close more deals with speed and precision. Whether you’re a fast-scaling start-up, a B2B agency, or an established sales team, our platform brings everything you need into one powerful engine that saves time, increases conversions, and maximizes ROI. With Lead Explorer, you can instantly tap into a massive database of 50M+ verified B2B leads. Advanced filters let you drill down by job title, industry, geography, company size, revenue, and more—so you’re always talking to the right people at the right companies. No more wasted hours on outdated data or dead-end lists—SalesTarget.ai ensures your pipeline stays full of high-quality, up-to-date prospects. Our Cold Email Outreach module supercharges your outreach efforts. Connect unlimited email accounts, rotate inboxes, automate follow-ups, and manage campaigns at scale—all while maintaining top-tier deliverability. With built-in warm-up, bounce detection, and tracking, you’ll see improved inbox placement, higher open rates, and more replies. But we don’t stop at outreach. The AI-powered CRM inside SalesTarget.ai is designed to make your sales process flow naturally. Manage leads, track conversations, organize pipelines, and schedule tasks—all in one clean, intuitive dashboard. No clunky integrations, no data leakage—just a smooth, AI-enhanced workflow built for sales growth. And now comes the real game-changer: Co-pilot. This next-gen AI assistant doesn’t just suggest ideas—it works alongside you like a true sales partner. From generating targeted lead lists to writing personalized sequences, recommending campaigns, analysing performance, and even scheduling campaigns automatically.

Neon CRM is a powerful and trusted database solution designed for growing nonprofit organizations and membership associations. Neon CRM was built for nonprofit people, by nonprofit people. Our people-centered approach to record management will provide your organization with immediate insight and data metrics to help build and sustain authentic and valuable relationships with constituents. Continually engage with your supporters through Neon CRM's built-in email marketing, prospect management tool suite, and get creative with automated workflows and triggers. The built-in functionality is limitless. Grow your organization with Neon CRM's complete fundraising, membership, event and volunteer management tool-set, online shop capabilities, automated receipting and communication, and over 50+ integrations with industry partners. Truly understand the full context of how people are connected to your organization - why people support you (financially and through their time), and how they continually engage with your organization.

GetResponse offers an all-in-one marketing platform designed to equip marketers, solopreneurs, creators, coaches, and small business owners with powerful, user-friendly tools for email marketing, automation, and content monetization. With more than 25 years of experience, GetResponse supports audience growth and engagement through email campaigns, enables seamless course creation and sales, and helps turn passion into profit. It’s the ideal choice for building personal brands, selling products and services, and creating loyal customer communities.

Knak is the enterprise-grade, no-code solution that transforms how marketing teams build emails and landing pages — without relying on developers or agencies. With a robust modular design system, real-time collaboration, and native integrations with platforms like Marketo, SFMC, and Eloqua, Knak eliminates production bottlenecks while preserving brand governance. Empower your team to deliver high-performance assets quickly, securely, and at scale — no code required. Trusted by global brands to streamline campaign execution and accelerate time-to-market.

Phonexa, an all-in one marketing software, has eight products that cover calls, leads and clicks, emails, SMSs, and much more. The company provides services to D2C businesses with high volumes of consumer traffic. Financial services, insurance, home service, legal, realty, and healthcare are all industries. Phonexa is a tracking software that can be used for performance, partner and affiliate marketing. The Phonexa Suite provides the underlying technology that helps performance marketing teams to drive ROI for brands through affiliate, partner and paid channels. Phonexa prioritizes results-based marketing for customer interactions such as clicks, phone calls, form submissions and website behavior. The Phonexa Suite is a single operating system that gives D2C publishers and networks, as well as brands and agencies, unprecedented control over campaigns. It also eliminates the lack of transparency in lead generation and automates processes. The Phonexa Suite

Create and manage the email signatures your company needs. Our award-winning signature generator and management platform makes it easy for individuals to create a professional email signature, and for companies to manage company-wide, unified branding across all employee signatures. Rich features such as banner campaigns, videos, disclaimers, online schedulers, and more, help users achieve their business goals. WiseStamp integrates easily with Google Workspace, Microsoft Exchange, Gmail, Outlook, and every other email platform.

Communicate with your customers through messages they find valuable and are motivated to respond to. Attentive offers an advanced SMS and email platform driven by AI, designed to assist businesses ranging from large retailers to budding e-commerce entrepreneurs in enhancing customer engagement and generating substantial revenue. Our services will enable you to accurately target your desired audience and track essential metrics, allowing you to fine-tune your marketing strategies effectively. With more than 100 versatile integrations, you can easily link our platform with your existing marketing tools for a more cohesive experience. We collaborate with cutting-edge leaders across various sectors, including retail and e-commerce, food and beverage, as well as media and entertainment. By utilizing Attentive’s innovative SMS and email solutions, you could potentially see a doubling of your return on investment within just a few months. Explore the benefits of our complimentary 30-day trial today to experience the difference firsthand.