> We design, build and launch SaaS products, from email tools to AI apps. See FlyReplies and the other software we built and run, then book a free call. SaaS and web app development # SaaS Development Services From a Team That Builds and Runs Its Own Software We design, build and launch SaaS products, from the first screen to paying customers. Our flagship is FlyReplies, a cold email and email marketing platform we built from scratch and run every day. The same team can build yours. Flagship product**[FlyReplies](https://flyreplies.com/), cold email and email marketing in one app** Also built**Grade My Homepage, Find a Security Consultant, a client portal and Figma plugins** What we deliver**Product design, full stack build, payments, admin panel, launch site** Stack**Node.js, Express, MariaDB, WordPress, Elementor, Stripe, Cloudflare** [Book a free strategy call](https://calendly.com/imtiazahmed/45min)[Try FlyReplies](https://flyreplies.com/) ![FlyReplies SaaS by Design Fly 24 on laptop and phone](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-saas-hero-mockup-tall.webp) **01**What we build ## SaaS products, built end to end Most agencies build websites. We also build the software behind them. Every product on this page was designed, coded, launched and maintained by Design Fly 24, so you work with people who know what it takes to run a real product, not just ship a prototype. Product ### SaaS web apps Multi user apps with accounts, workspaces, roles, onboarding and billing, built to grow. Email ### Email and outreach tools Sending, tracking, deliverability, automations and reporting. The core of FlyReplies. AI ### AI features Writing assistants, reply classification, scoring and reports that save your users real time. Payments ### Stripe subscriptions Plans, trials, coupons, invoices and a customer billing portal connected from day one. Admin ### Admin panels and dashboards A super admin area to manage users, plans, security and alerts without touching code. WordPress ### Plugins, portals and directories Custom WordPress plugins and Elementor widgets when your product lives inside a website. **02**Flagship product ## FlyReplies: cold email and email marketing in one app FlyReplies is our own SaaS, live at [flyreplies.com](https://flyreplies.com/). It replaces separate tools for lead finding, cold email, newsletters and automations with one app. We use it every day to win clients for Design Fly 24, which is why every feature is shaped by real use. Here is a tour of the product, using sample data. ![Guided from the first login](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-dashboard-scaled.webp) Dashboard ### Guided from the first login A welcome tour, a setup checklist and a short guide on every page, so new users know exactly what to do next. ![Split test writing styles](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-campaign-editor-scaled.webp) Campaigns ### Split test writing styles Write a sequence, then let AI rewrite a step in different styles and send each version to a share of your leads. ![See which style gets replies](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-what-works-scaled.webp) What works ### See which style gets replies Reply rates per writing style across every campaign, so the winner is obvious. ![Every reply in one inbox](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-unibox-scaled.webp) Unibox ### Every reply in one inbox Replies from all mailboxes land in one place, labelled by AI as interested, meeting, question or not now. ![Emails that send themselves](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-automations-scaled.webp) Automations ### Emails that send themselves A visual builder with emails, waits, yes or no checks and tags, triggered by forms, lists or segments. ![Grow a list from any website](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-forms-scaled.webp) Forms ### Grow a list from any website Pop ups, slide ins and inline forms with a live device preview, plus a free WordPress plugin. ![Results across campaigns and mailboxes](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-analytics-scaled.webp) Analytics ### Results across campaigns and mailboxes Sent, replies, positive replies, meetings and bounces, broken down by campaign and mailbox. ![From reply to signed client](https://designfly24.com/wp-content/uploads/2026/11/flyreplies-deals-scaled.webp) Deals ### From reply to signed client Good replies become deals on a simple board with value and stages. [Download the FlyReplies product guide (PDF)](https://designfly24.com/wp-content/uploads/2026/11/FlyReplies-Product-Guide.pdf) **03**Inside FlyReplies ## What we engineered into it The screens are the easy part. Most of the work in an email product is in the parts users never see. ### Deliverability Mailbox warmup, rotation with safe daily limits, bounce detection and automatic pausing when a mailbox struggles. ### Bulk sending Connect Amazon SES, Brevo, SendGrid, Mailgun, Postmark or Resend to send newsletters to thousands per hour. ### Tracking you can trust Open and click tracking that ignores scanners and machine opens, plus one click unsubscribe. ### Security Two factor sign in, bot protection on login and signup, and alerts for new accounts. ### Billing Stripe plans, trials, coupons and automatic invoice emails. ### White label Agencies can use their own logo, colors and domain and run client workspaces. **04**More products ## Other software we built and run FlyReplies is the flagship, but it is not the only product we have shipped. ![Grade My Homepage](https://designfly24.com/wp-content/uploads/2026/11/grade-my-homepage-scaled.webp) AI tool ### Grade My Homepage A free AI homepage grader. Visitors enter a URL and get a score out of 100, a speed check and their top three fixes by email. ![Find a Security Consultant](https://designfly24.com/wp-content/uploads/2026/11/security-consultant-directory-search-scaled.webp) Directory platform ### Find a Security Consultant A searchable directory of independent security consultants with profiles, specialties, states and proposal requests. ![Specialty pages that rank](https://designfly24.com/wp-content/uploads/2026/11/security-consultant-directory-home-scaled.webp) ### Specialty pages that rank Every specialty and state gets its own page, built to be found in search. ![Design Fly 24 client portal](https://designfly24.com/wp-content/uploads/2026/11/client-portal-dashboard-scaled.webp) Client portal ### Design Fly 24 client portal Our own portal where clients follow projects, pay invoices, send messages and upload files. ![Project brief in six steps](https://designfly24.com/wp-content/uploads/2026/11/client-portal-project-brief-scaled.webp) ### Project brief in six steps A guided brief that collects business, goals, pages, brand, budget and files in one go. Figma plugin ### Gradiant A gradient library plugin for Figma. ### Text Scaler Photoshop style text resizing and typography tools inside Figma. ### Blending Options A Photoshop style blending dialog for Figma layers. ### Motion Light Draw Draws neon light strands and places them in Figma. **05**How we work ## From idea to paying customers 1. ### Discovery We map your users, the problem you solve and the one workflow that has to feel effortless. 2. ### Design first We design the key screens and your homepage first, so you can see the product before we write code. 3. ### Build We build the app, admin panel and payments in short rounds, with a working preview you can click through. 4. ### Launch We set up hosting, domains, email, security and a launch website, then go live. 5. ### Grow We keep improving the product with you, from onboarding tweaks to new features. **06**Who it is for ## Who we build for ### Founders with an idea You know the problem and the customer. We turn it into a product people can sign up for and pay for. ### Consultants and agencies Turn your know how into a tool, a portal or a paid product that works while you sleep. ### Teams replacing spreadsheets A focused internal tool can save hours every week and remove costly mistakes. **07**Questions ## SaaS development questions **Did you really build FlyReplies yourselves?** Yes. FlyReplies was designed, coded and launched by Design Fly 24, and we use it every day for our own outreach. You can try it at flyreplies.com. **What technology do you use?** Usually Node.js with Express and MariaDB for web apps, and WordPress with custom plugins and Elementor widgets when the product lives inside a website. Payments run on Stripe and DNS and security on Cloudflare. **Can you add AI features?** Yes. FlyReplies uses AI to rewrite emails in different styles and to label replies, and Grade My Homepage uses AI to score homepages. We can add similar features to your product. **Do you handle payments and subscriptions?** Yes. We connect Stripe for plans, trials, coupons and invoices, plus a billing area for your customers. **Can I see the product before you build it?** Yes. We design your key screens and your homepage first, completely free. If you love it, we build the rest. If not, you owe nothing. **Do you support the product after launch?** Yes. We can keep improving, hosting and maintaining it with you. ## Have a SaaS idea? Let us build it with you. Tell us what you want to build and we will design your key screens and homepage first, free. If you love it, we build the rest. If not, you owe nothing. [Book your free strategy call](https://calendly.com/imtiazahmed/45min)[Send us a message](https://designfly24.com/contact-us/) ![Imtiaz Ahmed, founder of Design Fly 24](https://designfly24.com/wp-content/uploads/2026/10/Imtiaz-Ahmed.png) Written by**Imtiaz Ahmed, founder of Design Fly 24** Imtiaz has spent about seven years designing websites and LinkedIn brands for security consultants, safety experts and specialist firms. He led this project personally. [Read his story](https://designfly24.com/imtiaz-ahmed-founder/). --- Source: