Email that lands. Revenue that follows.
Built for indie SaaS and lean e-commerce teams that want campaigns and a clean API—without bloat.
Last 30 days: 10,000,000 emails sent • Avg bounce 0.8% • Open rate 28%
What is Cllavio?
Our email marketing platform is designed for businesses of all sizes, from early-stage startups to fast-growing e-commerce brands and established SaaS companies. Whether you're aiming to build customer relationships, increase engagement, or drive sales, our platform provides the tools you need to reach your goals without forcing you into a bloated, enterprise-style workflow.
With features like unlimited emails on generous plans, customizable templates, advanced scheduling, and real-time analytics, Cllavio's Email Marketing Platform empowers you to create professional campaigns effortlessly. You can design newsletters, launch promotional blasts, and run lifecycle sequences in the same place where you monitor performance and optimize deliverability.
Under the hood, Cllavio combines a marketing-friendly UI with a developer-grade email API. That means product, marketing, and engineering teams can work on the same stack: your marketers control campaigns and segments, while your developers trigger transactional emails, password resets, and system alerts through a clean HTTP interface.
We also put a heavy focus on sender reputation and long-term inbox placement. Every domain is onboarded with SPF, DKIM, and DMARC guidance, and we actively monitor bounce rate and engagement to protect your sending IPs. If something looks risky, we pause sending and surface clear explanations instead of quietly burning your domain.
In short: Cllavio is an email marketing platform and email API in one product. You get the flexibility of a campaign tool like Mailchimp plus the reliability of a transactional provider like SendGrid, wrapped in pricing and support that actually makes sense for indie founders and lean teams.
With Cllavio you can:
- Send newsletters, product updates, and promotions to segmented audiences.
- Automate onboarding, trial-to-paid nudges, and win-back sequences.
- Trigger transactional emails (order confirmations, receipts, password resets) via API.
- Monitor open, click, bounce, and spam metrics in real time.
- Warm up new sending domains with built-in safeguards around bounce and complaint rates.
Use cases for SaaS and e-commerce
Cllavio is built for teams that care about both growth and reliability. Here's how customers use it every day to ship meaningful emails instead of noise.
For SaaS products
SaaS teams use Cllavio to run the full customer lifecycle: from the first trial signup, to activation, expansion, and retention. You can plug Cllavio into your app for transactional email and then let your marketing team layer lifecycle campaigns on top without bothering engineering for every change.
- Welcome and onboarding sequences for new signups.
- Feature announcement campaigns and changelog digests.
- Trial expiry reminders and upgrade nudges tied to usage.
- Security alerts, billing notifications, and password resets via API.
For e-commerce brands
E-commerce and DTC stores rely on Cllavio to keep revenue flowing through timely, relevant emails. Connect your store, sync customer data, and start sending campaigns that are actually tied to what people browse and buy.
- Abandoned cart sequences that recover lost checkouts.
- Post-purchase flows with shipping updates and product education.
- Seasonal promotions and flash sales to your best customers.
- Back-in-stock and price-drop alerts for high-intent buyers.
Why teams switch to Cllavio
Most teams move to Cllavio after hitting limits or frustration with existing tools: confusing pricing, aggressive upsells, slow dashboards, or poor support when deliverability starts to slip. Cllavio focuses on the basics done right: clean UI, predictable billing, transparent limits, and clear guidance when you need to warm a new domain or clean a list.
Instead of buying one platform for marketing and another for transactional email, you can consolidate on a single provider that understands both. That keeps your data, templates, and reporting in one place and makes it easier to keep your sender reputation healthy.
Platform Features
Everything you need to create successful email campaigns and reliable transactional flows in a single platform.
Unlimited Emails
Send as many emails as you need on generous limits. Focus on building revenue, not counting credits or worrying about surprise overages.
Customizable Templates
Access a growing library of templates or design your own with HTML. Keep your brand consistent across newsletters, promotions, and transactional emails.
Real-Time Analytics
Track opens, clicks, bounces, spam complaints, and failures in real time. Spot issues early and understand exactly how each campaign or integration is performing.
Automation
Schedule campaigns ahead of time and set up simple flows for onboarding, follow-ups, and win-backs. Automate the boring stuff so your team can focus on strategy.
Personalization
Insert dynamic fields like first name, plan, product, or last order into your emails. Speak to segments instead of blasting the same message to everyone.
Reliable Deliverability
We monitor bounce rate and spam signals and add guardrails around bad lists. SPF, DKIM, and DMARC are first-class citizens, not an afterthought.
Built for developers as well as marketers
Cllavio isn't just a marketing dashboard. It also ships with a clean Email API that your engineers can integrate in minutes, without dealing with legacy SOAP APIs or bloated SDKs.
Simple HTTP interface
The Email API uses straightforward HTTP endpoints with JSON payloads and optional attachments. You can send transactional messages, replies, and follow-ups from any backend stack that can make an HTTP request—Node, Laravel, Rails, Spring Boot, you name it.
- Authenticate with access and secret tokens tied to your sender identities.
- Send emails via a single POST request with a structured JSON payload.
- Attach invoices, PDFs, and other documents without extra complexity.
- Handle errors predictably with clear status codes and messages.
Infrastructure and reputation
Behind the API and campaign UI sits an infrastructure layer focused on deliverability. We warm up sending IPs, enforce sensible limits, and watch for spikes in bounces and spam reports so your reputation doesn't collapse silently in the background.
- Domain authentication with SPF, DKIM, and DMARC alignment.
- Automatic pausing when bounce rate crosses safe thresholds.
- Best-practice guidance for list hygiene and domain warming.
- Transparent analytics so you always see what's happening on the wire.
Your team can start by using Cllavio for newsletters and campaigns, then progressively migrate transactional traffic onto the same platform when you're ready. No need to maintain two separate providers or stitch together inconsistent reports.
Email Verification Studio
Validate an email in real time
Check syntax, suppression status, disposable domains, DNS MX, and live SMTP response — the same pipeline we use before sending from Cllavio.
No card required • built-in deliverability guardrails
Tip: start with a known-good mailbox (like your own work email), then try a fake one (e.g. nope+invalid@yourdomain.com) to see how SMTP rejection is surfaced.
Clean lists before you send
Upload a CSV and let Cllavio run this same validation flow at scale — syntax, disposable domains, MX, and SMTP checks — so your campaigns don't burn reputation on bad addresses.
- Up to 15k free email validations on the starter plan.
- Automatic suppression of hard-bounced and complaint addresses.
- Protect sender reputation before you ever hit “Send campaign”.
Connect your domain, import a CSV, and clean your first list in minutes.
FAQs
How long to send my first email?
About 3 minutes if your domain is already verified; 10–20 minutes if you’re adding DNS records for the first time. Connect your domain, verify it, create a list, and send a small test campaign to warm things up.
Do you handle SPF/DKIM/DMARC?
Yes. We generate the exact DNS records you need and guide you through publishing them with your DNS provider. Once they’re live, you verify inside Settings → Domains so every send is authenticated.
What happens if my bounce rate spikes?
We automatically slow or pause sending and surface a clear warning. You’ll see which lists or campaigns are causing the issue so you can clean them up before your reputation takes a long-term hit.
CSV format for imports?
UTF-8 with a header row. email is required; first_name/firstName, last_name/lastName, and is_subscribed/isSubscribed are optional. Invalid or missing emails are skipped instead of breaking the whole job.
Is the API tied to the sender?
Yes. Tokens are bound to sender identities, so the from address in your API payload must match a verified sender with valid credentials. This prevents abuse and keeps your workspace secure.
Pricing?
Transparent tiers, built for indie SaaS and lean e-commerce teams. You start on a free plan and upgrade only when your sending volume and list size justify it—no long-term contract required.
How do I migrate from SendGrid/Mailchimp?
Export your lists as CSV, connect and verify your sending domain, import subscribers into Cllavio, recreate or import templates, and send a small batch first. Most teams complete the migration in around 30 minutes.
Support?
Email support for every plan, with faster responses for higher tiers. Larger senders can also request a setup call to review DNS, warm-up strategy, and how to map existing journeys into Cllavio.
Join Thousands of Happy Users
Experience the easiest and most affordable way to scale your email campaigns and transactional sending. Start on the free plan, prove value, and only upgrade when the volume justifies it.
Takes ~3 minutes to your first send with a verified domain and ready-made templates.
Start freeContact us
Migration help, deliverability review, pricing—ask away.
Prefer email? Write us at info@cllavio.com.
Talk to a human. Fast.
We help teams switch from Mailchimp/SendGrid without pain. If you’re migrating lists, warming a domain, or just need a sanity check on deliverability, we’ll guide you end-to-end and share what actually works in practice—not generic “best practices” copied from help docs.
- Concierge migration (CSV, templates, DNS)
- Deliverability review & warm-up plan
- Pricing fit for startups & SMBs
SLA: we reply within 24h on weekdays. Urgent? Put “URGENT” in the subject and we'll prioritize your message.