Relayzo: All-in-One Email Marketing Software

Relayzo is a powerful, cloud-based email marketing software designed for digital marketers, agencies, and SaaS companies. It combines high-volume email platform capabilities with user-friendly tools to solve common pain points like poor deliverability, limited scalability, and lack of automation. With Relayzo, you get unlimited subscribers and sophisticated features, from drag-and-drop email design to advanced deliverability and analytics, all in one modern platform. This means you can send and track millions of emails without extra fees, optimize campaigns with automation, and ensure your messages land in the inbox.

Experience Relayzo in action: Live Demo

Username: demo@relayzo.com

Password: 12345678

For any query: team@relayzo.com

Installation Assistance:

Copy Files
Transfer all files from the Install folder to the root directory of your domain.
Access Setup
Open your browser and navigate to https://yourdomain.com/install/setup.php
Example: If your domain is https://example.com, access https://example.com/install/setup.php

Online Guide: https://relayzo.com/installation-guide
Available APIs: https://relayzo.com/apis
Change Log: https://relayzo.com/change-log

Requirements:

PHP 8.2+
MySQL 8.0+
A valid SMTP or email delivery service account

Relayzo’s features can be grouped into clear sections, each addressing real marketing needs:

Smart Inbox AI Assistant

Relayzo’s AI Assistant makes email marketing smarter by helping you plan, create, and optimize campaigns using real-time AI insights . Whether you’re crafting subject lines or analyzing reports, the assistant guides you toward better results with less effort.

Plan better campaigns. Use the AI Assistant to brainstorm ideas, organize your messaging, and structure your campaign flow—all through a conversational interface.
Subject line optimization. The AI suggests high-performing subject lines based on engagement data to improve open rates and user attention.
Campaign analytics made simple. Instead of digging through reports, just ask the assistant. It interprets campaign data and recommends adjustments to your content, timing, or strategy.
Save time, boost results. Automate planning and insights so you can focus on what matters—creative messaging and connecting with your audience.

Advanced PowerMTA Control Panel

Relayzo includes an advanced PowerMTA wizard to configure and manage high-performance email infrastructure —perfect for marketers who care about inbox placement and technical precision.

Deep integration with PowerMTA. Relayzo connects directly with PowerMTA to give you advanced control over IP warmups, domain mapping, and throttle rules.
Real-time delivery monitoring. Track delivery status, bounce responses, and log activity directly inside your Relayzo dashboard.
Efficient IP and domain management. Easily assign multiple IPs to domains and customize routing strategies to ensure optimal sender reputation.
Built for inbox success. By pairing Relayzo with PowerMTA, you get enterprise-grade deliverability, bounce handling, and domain protection—without needing third-party tools.

Unlimited Scalability & High-Volume Sending

Relayzo is built for high-volume email campaigns . With no subscriber limits or quotas, you can grow your mailing lists and send massive campaigns without extra charges or performance issues. Its optimized sending engine is designed to handle millions of emails per hour, so you can scale your email marketing effortlessly.

No subscriber caps or quotas. Scale your lists and campaigns without worrying about hitting limits. Relayzo lets you send to your entire audience, whether it’s hundreds or millions of contacts, under one roof.
Optimized for volume. Built on PHP 8/MySQL and supports multiple SMTP providers, Relayzo handles large batches efficiently.
Cost-effective growth. Because Relayzo is a self-hosted solution, you invest once and enjoy an unlimited email marketing platform that grows with your business.
Dedicated support. Relayzo provides expert help to set up high-volume sends safely. This ensures you ramp up large campaigns while following best practices (like warm-up plans) to maximize inbox placement and ROI.

Agency-Friendly Multi-Customer Management

Relayzo excels for agencies and SaaS teams needing to manage multiple clients or brands under one account. You can create separate customer profiles with their own subscriber lists, settings, and sending servers. This keeps data organized and secure: clients’ lists, campaigns, and metrics stay siloed and private.

Multi-tenant architecture. Create unlimited customer accounts (clients) within one Relayzo installation. Each customer has isolated data and email infrastructure, so you never mix up lists or reports.
Custom list/server assignments. Assign specific mailing lists and SMTP servers to each customer. This way, sending reputations stay separate, and you can optimize deliverability per client (for example, using dedicated IPs for bigger senders).
Role-based access and white-labeling. Grant each team or client their login, with permissions and branding as needed. Collaborate securely: Admins control who can send or view data, while clients see only their dashboards.
Easy account switching. View and switch between customer accounts in a couple of clicks. Relayzo’s interface makes it simple to manage multiple brands without logging out or opening new tabs.

Custom Fields & Smart Contact Management

Relayzo’s contact database goes beyond basic emails. You can store custom fields (e.g., first name, industry, purchase history) for each subscriber, creating a rich profile of every contact. This smart contact management enables highly personalized campaigns.

Rich subscriber profiles. Save any details about your audience (demographics, behavior, preferences). This data lets you tailor content for each segment or individual using dynamic placeholders.
Powerful filtering and segmentation. Combine custom fields with signup dates, tags, and campaign interactions to slice lists any way you want. For example, target contacts who live in California and clicked your last promotion, or exclude those who haven’t opened in 6 months.
Better personalization. Use the stored data to personalize subject lines and email body text automatically. Personalized emails (using names or other custom info) drive higher engagement: marketers report significantly higher open and click rates when content speaks directly to each subscriber.
Data-driven compliance. Track consent, opt-in source, or other compliance fields for each contact. Relayzo can use this info to auto-exclude recipients who opt out or fall under specific regulations, keeping you in line with GDPR, CASL, CAN-SPAM, and similar laws.

Drag-and-Drop Email Template Builder

Create stunning emails without any HTML knowledge. Relayzo includes a WYSIWYG drag-and-drop editor so you can design professional, mobile-responsive templates in minutes. Just choose a layout, drag in images and text blocks, and customize colors or fonts to match your brand.

No coding required. Anyone on your team (from marketers to designers) can build beautiful emails. Experts note that drag-and-drop editors “save time” and are especially appreciated by non-technical users. Instead of wrestling with code, you see exactly what you’re creating as you build.
100% responsive. Templates are automatically optimized for mobile and desktop. You don’t need to test separate layouts – just build once, and Relayzo ensures it looks great on any device.
Reusable modules and themes. Save your own custom templates, headers, footers, and content blocks in a personal library. Reuse branded sections like contact info or promotional banners across campaigns to maintain consistency.
Fast A/B testing. Quickly duplicate any template to test different subject lines, images, or calls-to-action. The intuitive builder makes it easy to run experiments and choose the best-performing design.

Smart Image Library

Relayzo includes an integrated image manager to organize all your marketing visuals. Upload logos, product photos, and graphics once and reuse them across campaigns. The image library keeps your media organized so you never lose track of the right picture.

Centralized asset storage. Store all images within Relayzo’s secure library. Tag and categorize photos or banners so your team can instantly find and reuse them in any email.
Optimized delivery. Relayzo automatically compresses images for fast email loading. Subscribers see clear, high-quality visuals without slowing down their inbox.
Brand consistency. By managing your images in one place, you ensure only approved, on-brand graphics get used. This keeps every campaign aligned and professional, whether you’re sending a quick newsletter or a global product announcement.

Advanced Segmentation for Targeted Campaigns

Relayzo empowers you to send highly targeted emails by segmenting your audience on virtually any data point. Send the right message to the right people by filtering subscribers into meaningful groups. For example, you can segment by demographics (age, location), behavior (pages visited, previous campaigns clicked), or engagement level.

Higher open and click rates. Segmented campaigns drive much better engagement. In fact, studies show that segmented emails generate about 30% more opens and 50% more clicks than untargeted ones. By delivering relevant content to each segment, your subscribers see messages that interest them.
Improved conversions. When people feel an email speaks directly to them (like their region, role, or purchase history), they’re more likely to convert. Relayzo lets you use custom fields to personalize content at scale – from inserting a contact’s name to recommending products based on past buys.
Reduced unsubscribes. Irrelevant emails are a major reason for unsubscribes. By keeping content on point for each segment, Relayzo helps improve list health. Focusing on engaged audiences means fewer people will mark your emails as spam or opt out.
Dynamic resizing of segments. Build segments using flexible rules, and the lists update automatically as your data changes. For example, a “new sign-ups” segment could automatically include every contact who joined in the last 7 days. Relayzo’s smart filters ensure your segments stay fresh without manual work.

Automated Campaign Series and Triggers

With Relayzo’s email automation , you can set up drip (multi-step) campaigns that run on autopilot. Define a series of emails to send over time or in response to subscriber actions (like clicking a link or visiting a page). Automated series nurture leads and customers at scale — guiding them through your sales funnel without lifting a finger.

Drag-and-drop workflow builder. Create complex automation flows by dragging and dropping trigger points and email steps. For instance, send a welcome email when someone joins your list, then a follow-up 3 days later, and a product recommendation a week after that.
Behavioral triggers. Fire emails automatically when subscribers take specific actions. Did they click on a discount link? Send a thank-you email. Abandoned their cart? Trigger a reminder. These personalized interactions boost engagement and conversions.
Date-based scheduling. Set up time-based triggers like birthdays, anniversaries, or contract renewal dates. Relayzo will send celebratory or timely offers exactly when it matters most, strengthening customer relationships.
Campaign goals and splits. Monitor the performance of each automated series and easily clone or split campaigns for A/B testing. Automation combined with Relayzo’s robust reporting (see Analytics below) lets you refine flows for maximum impact.

Dynamic Content with Spintags (Spintax)

Relayzo can automatically generate unique content variations using Spintags (a form of spintax). This means even if you send thousands of emails, each one can appear fresh and customized. Spintags let you define lists of alternate phrases or images, and Relayzo picks a variation for each recipient.

Personalization at scale. Insert dynamic snippets like {Name} or {Interest} to tailor each email. For example, “{Hello|Hi|Greetings} {First_Name},” ensures each message greets the subscriber personally. This kind of customization drives open and click rates higher.
Anti-spam variation. Spintags help avoid spam filters by preventing duplicate content across mailings. Spam algorithms often flag identical bulk emails, but Relayzo’s unique variations make each email look handwritten. As a result, deliverability improves because inbox providers see each send as novel.
Creative subject lines. Rotate subject line options within your campaign: for example, use either “50% off this week!” or “Exclusive 50% discount, just for you!” at random. Testing has shown that slight variations can significantly change open rates. Relayzo lets you easily experiment with different copies to see what works best.
Engaging body content. Use Spintags to swap synonyms or entire sentences in the email body. This keeps long campaigns from feeling stale and helps personalize messages to different audience tastes. The more tailored your content, the more responsive your audience will be.

Seamless Email Delivery and SMTP Integration

Relayzo focuses on getting your emails into inboxes , not just sending them. You can connect any reliable SMTP service (like Amazon SES, SendGrid, Mailgun, or your email server) and Relayzo will manage the sending process for you. This guarantees high deliverability and lets you monitor every send.

Robust SMTP support. Whether you use a third-party provider or your mail servers, Relayzo integrates easily. It sends batch emails securely and can switch servers on the fly to handle peaks in volume.
Deliverability best practices. The platform helps you follow key rules for inbox success: proper authentication (SPF, DKIM, DMARC), consistent sending patterns, and suppression of bad addresses. In email marketing, deliverability is critical for success, and Relayzo builds in safeguards to keep your reputation strong.
Queue management & retries. If a server is busy, Relayzo automatically queues emails and retries delivery. It tracks soft bounces (temporary failures) and continually attempts delivery until resolved. This means fewer lost emails compared to sending all at once with no feedback.
Reputation protection. By handling bounces and complaints (see below) immediately, Relayzo ensures you maintain a good sender reputation. Coupled with support for throttling or limiting send rates, even first-time marketers can protect their domain from sudden spam spikes.

Branded Sending and Tracking Domains

Relayzo lets you send emails from your domain (e.g., news@yourbrand.com ) and use custom tracking links. Branded domains and links are more trustworthy to subscribers and inbox providers, which boosts deliverability and engagement.

Trusted sender identity. Emails coming from a familiar domain reinforce brand trust. Mailbox providers (Gmail, Yahoo, etc.) recognize that your custom domain is consistently tied to your brand, signaling legitimacy. This helps your emails land in the inbox rather than the spam folder.
Proper email authentication. You can set up SPF, DKIM and DMARC for your sending domains within Relayzo. Authenticated emails are less likely to be marked as spam. Relayzo guides you through these configurations so every send passes key security checks.
Branded tracking links. Instead of generic short links, Relayzo uses your domain for click-tracking URLs. This continuity – seeing your brand everywhere in the email – reassures readers. Branded links also avoid triggering spam filters that distrust anonymous URL shorteners.
Consistent branding across campaigns. Beyond just the “From” address, you can white-label Relayzo’s interface and reporting with your brand, making Relayzo an invisible backend for agency clients. Every touchpoint (headers, footers, analytics dashboards) can reinforce your brand image.

Bounce, Complaint & Feedback Loop Management

Relayzo automatically handles the gritty details of email hygiene to protect your sender reputation. It processes bounce notifications and spam complaints so you don’t have to worry about them.

Smart bounce handling. Hard bounces (permanent failures) are detected and the addresses are automatically suppressed . This means Relayzo won’t send to invalid emails again, preventing continuous failures. Good email senders eliminate hard-bounced addresses to maintain deliverability.
Feedback loop integration. For major mailbox providers, Relayzo can subscribe to feedback loops (FBLs) that report spam complaints. When a user marks an email as spam, Relayzo will automatically remove it from your list. This keeps complaint rates low and your domain in good standing.
Spam complaint alerts. Relayzo notifies you if complaint rates suddenly rise, so you can investigate. If needed, you can pause a campaign or investigate the cause (bad content or list issues) before your reputation suffers.
Detailed bounce stats. View reports of bounce reasons (full mailbox, invalid address, etc.). Seeing these patterns helps you clean your data proactively. Relayzo shows you where issues are, so you can remove problem domains or segments.

Suppression List Management

Relayzo keeps unsubscribing and unsubscribes during lockdown with smart suppression lists. Every time someone clicks “unsubscribe” or fails to confirm, their address is added to a global suppression list. These contacts will never get another email from your account.

Automatic opt-out compliance. Relayzo inserts an unsubscribe link in every email and handles the opt-out process. Unsubscribed contacts are immediately suppressed from all future sends, ensuring you comply with CAN-SPAM, GDPR, and similar laws.
Custom suppression lists. Besides global opt-outs, you can create your exclusion lists (e.g., “do not contact” lists). For instance, internal emails or special groups can be blocked from campaigns automatically.
One-click imports. If you have a list of bad or non-consenting emails from another source, simply upload it to Relayzo. The system will honor that list on every send. This prevents you from accidentally emailing those who should not be contacted.

Geo-Location Tracking

Understanding where your subscribers are opens up localization and timing strategies. Relayzo can capture the approximate location (city/state/country) where each email is opened. This geo-tracking insight allows you to tailor campaigns geographically.

Localized content and offers. Use open-location data to send region-specific promotions or events. For example, market a concert only in cities where ticket sales are high. Geo-personalization can make your content more relevant and boost engagement.
Time zone scheduling. See where opens happen to fine-tune send times. If you know most of your audience is in Europe, schedule sends for their morning instead of yours. Relayzo’s scheduler makes it easy to send by the recipient’s time zone.
Open rate uplift. Location-based targeting pays off: one study found that adding simple geographic personalization can raise open rates by ~26% . By acknowledging a subscriber’s locale (like “Good morning London!”), You instantly improve relevance.
Campaign analytics by region. Drill down into reports to compare performance across geographies. This can reveal new opportunities (e.g., untapped markets) or areas needing different messaging.

Advanced Analytics & Reporting

Relayzo provides in-depth campaign reporting so you can measure exactly how well each email performs. Track opens, clicks, unsubscribes, bounce rates, and conversions in real time. Detailed analytics help you refine your strategy and prove ROI.

Key metrics at your fingertips. See open and click-through rates instantly after each send. Monitor who clicked which link, when and how many times. You’ll also see hard vs. soft bounces, deliverability stats, and engagement curves.
Visualizations and trends. Relayzo’s dashboards include charts showing opens and clicks over time. Spot trends like peak engagement days or underperforming segments. These insights guide your timing and content decisions.
Exportable reports. Generate PDF or CSV reports to share results with your team or clients. Include campaign summaries or granular subscriber data. Having exportable reports makes billing, analysis, and archiving much easier.
Data-driven optimization. With Relayzo’s analytics, you can run smarter A/B tests and iteratively improve. In fact, platforms with advanced reporting often boast higher campaign ROI, since marketers can make “data-driven decisions” and fine-tune their messages.

Activity Logs & Team Collaboration

Relayzo is built for teams. You can add multiple users (designers, copywriters, marketers) with distinct roles. Every action is logged so you always know who did what and when. This transparency streamlines collaboration and keeps your account secure.

User roles and permissions. Grant view-only, send-only, or admin rights to team members. For agencies, this means a client can review reports without affecting settings. For businesses, managers can limit access so junior staff only see what they need.
Comprehensive activity logs. Track every major event: logins, email sends, list imports, setting changes, etc. These audit trails are invaluable for troubleshooting or compliance audits.
Collaborative editing. Multiple users can work together on campaigns. For example, a marketer can draft an email, a designer can add graphics, and a manager can approve the send. Relayzo locks items being edited to prevent conflicts.
Security features. Optional two-factor authentication (2FA) and IP restrictions add extra safety for your data. You decide which networks your team can log in from and can force password updates.

Conclusion

Relayzo is a modern, all-in-one email marketing solution that tackles every challenge your team faces. It combines unlimited scalability with enterprise-grade tools from easy drag-and-drop email builders to sophisticated deliverability management and automation. Whether you’re a growing SaaS company or a busy marketing agency, Relayzo gives you complete control: no more worrying about hidden limits or deliverability headaches. Every feature, like email automation , bounce handling, and custom branding, is designed to save time and boost campaign performance. In short, Relayzo is the platform to streamline your email marketing: send more, personalize better, and reach more inboxes all under one roof.

Relayzo – Email Marketing Application