Klaviyo vs Campaign Monitor vs Moosend vs SMTP Comparison
Klaviyo
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Klaviyo is a powerful marketing automation platform that allows you to attract new customers, drive sales, and build your list. The simple, intuitive interface makes it easy to create targeted campaigns visitors will lov…
Campaign Monitor
Starting at $10.80 /month
- Free Trial
- Freelancers / Consultants
- Large Enterprises
Campaign Monitor is a web and email marketing application that allows users to design and send marketing campaigns through the internet. Users use it to communicate with website visitors, create e-newsletters, build data…
Moosend
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Moosend is a powerful Email Marketing Software for small businesses that's easy to use and affordable, with a robust feature set. With its user-friendly interface and newbie-friendly training, Moosend makes it easy to cr…
SMTP
Starting at Contact for pricing
- Individuals
- Freelancers / Consultants
SMTP was built to solve the challenges of sending email from devices behind restrictive firewalls or communicating directly with a server over SMTP. It features multiple design elements and components that have been opti…
Klaviyo leads on user satisfaction with a 4.8-star rating across 625 reviews.
Klaviyo vs Campaign Monitor vs Moosend vs SMTP — at a glance
| Feature | Klaviyo | Campaign Monitor | Moosend | SMTP |
|---|---|---|---|---|
| Rating | 4.8 / 5 | — | 4.3 / 5 | 4.3 / 5 |
| Reviews | 625 | — | 416 | 11 |
| Starting price | Contact for pricing | $10.80 /month | Contact for pricing | Contact for pricing |
| Free trial | No | Yes | No | No |
| Free version | No | No | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Freelancers / Consultants, Large Enterprises, Medium Business | Large Enterprises, Medium Business, Small Business | Individuals, Freelancers / Consultants, Large Enterprises |
| Category | Marketing Automation Software | Email Marketing Software | Email Marketing Software | Transactional Email Software |
| Integrations | 10+ apps | 10+ apps | — | — |
| Platforms | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS | SaaS/Web/Cloud | SaaS/Web/Cloud | SaaS/Web/Cloud |
| API | Available | Available | Available | Available |
| Support modes | Business Hours, Online | 24/7 (Live rep), Online | Business Hours, Online | 24/7 (Live rep), Business Hours, Online |
| Certifications | SOC 2, GDPR | SOC 2, GDPR | GDPR | — |
| Data residency | Global | US | US | US |
Key differences between Klaviyo and Campaign Monitor
- Pricing: Campaign Monitor starts at $10.80 /month. Klaviyo pricing is not publicly listed.
- Free trial: Campaign Monitor offers a free trial; Klaviyo does not.
- Target audience: Klaviyo is built for Large Enterprises and Medium Business, while Campaign Monitor targets Freelancers / Consultants and Large Enterprises.
- Deployment: Klaviyo supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS; Campaign Monitor supports SaaS/Web/Cloud.
Compare Klaviyo vs Campaign Monitor vs Moosend vs SMTP — and walk away knowing which one fits.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Marketing Automation Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
Talk to an expert Talk to an expert |
Free PDF comparison
Download this Klaviyo vs Campaign Monitor vs Moosend vs SMTP comparison
Get the full side-by-side as a PDF — these picks plus the top Marketing Automation Software tools, with verified ratings, pricing and features.
- Side-by-side on pricing, features & ratings
- Plus the category top 10, scored & ranked
- Emailed to you — no on-screen download
No file downloads on screen — we email it to you. One-click unsubscribe anytime.
Klaviyo, Campaign Monitor, Moosend vs SMTP: Biggest differences
Start here before you go deeper into features.
Best for scalable, advanced email and SMS marketing in ecommerce.
- You manage marketing for medium to large ecommerce or DTC brands.
- You need powerful automation with deep personalization and revenue analytics.
- You want seamless integration with Shopify, BigCommerce, and subscription businesses.
- You are a small business needing a simple, minimal-feature email tool.
- Your team lacks capacity to handle a steep learning curve or complex features.
Best for marketers seeking polished email design with strong segmentation and delivery.
- You need an easy drag-and-drop email builder with professional templates.
- You want advanced audience segmentation and behavioral targeting capabilities.
- Your team values reliable inbox deliverability and anti-spam measures.
- You require extensive multi-channel marketing automation beyond email campaigns.
- You have a large subscriber list and need a cost-effective solution at scale.
Large Enterprises, Medium Business, Small Business
Individuals, Freelancers / Consultants, Large Enterprises
Klaviyo: Best for scalable, advanced email and SMS marketing in ecommerce. Campaign Monitor: Best for marketers seeking polished email design with strong segmentation and delivery.
Description | Klaviyo is a powerful marketing automation platform that allows you to attract new customers, drive sales, and build your list. The simple, intuitive interface makes it easy to create ... Read More about Klaviyo | Campaign Monitor is a web and email marketing application that allows users to design and send marketing campaigns through the internet. Users use it to communicate with website visitors, ... Read More about Campaign Monitor | Moosend is a powerful Email Marketing Software for small businesses that's easy to use and affordable, with a robust feature set. With its user-friendly interface and newbie-friendly ... Read More about Moosend | SMTP was built to solve the challenges of sending email from devices behind restrictive firewalls or communicating directly with a server over SMTP. It features multiple design elements and ... Read More about SMTP |
|---|---|---|---|---|
Entry Level Pricing |
|
|
|
|
Free Trial Availability |
|
|
| |
SpotScoreWhat's this? ↗ | 9.5/10 | 9.4/10 | 8.8/10 | 7.2/10 |
User RatingsBased on verified Spotsaas reviews | ||||
Best Company Size | 201-500 employeesMedium to large businesses | 1-50 employees51-500 employees | 1 to 500 employees | 50 to 500 employees |
Get pricing help | Get pricing help |
Where each option fits best
See where each product is strongest, which teams it fits, and what causes buyers to keep looking — before you commit.
Based on buyer reviews and verified product data collected by Spotsaas.
Key strengths
- Scales with fast-growing D2C brands: Klaviyo is built to handle large contact lists, high send volumes, and complex automation as brands grow. Its infrastructure supports scaling without switching platforms, making it a long-term choice for ecommerce brands moving from early growth to mature operations.
- Strong analytics and revenue attribution: Klaviyo provides detailed reporting on campaign performance, flow revenue, conversion rates, and customer lifetime value. This makes it easier for teams to understand which messages are driving revenue and where to optimize. Clear attribution helps justify marketing spend and refine lifecycle strategies over time.
- Personalization at scale: With dynamic content blocks, conditional logic, and product recommendations, Klaviyo allows brands to personalize messages for thousands or millions of customers at once. Emails and texts can adapt based on customer preferences, purchase history, and engagement, improving relevance without increasing campaign complexity.
- User-Friendly Interface: Campaign Monitor offers a clean and intuitive design, making it easy for team members at all levels to create and manage email campaigns without extensive training. You’ll appreciate how quickly you can get started.
- Powerful Segmentation & Personalization: With advanced segmentation tools, you can tailor your messages based on subscriber behavior and preferences. This means you’re not just sending emails; you’re delivering personalized experiences that drive higher engagement.
- Analytics & Reporting: Get useful insights with detailed reports on open rates, click-through rates, and conversion metrics. The data-driven approach helps you refine your strategies for better results over time.
- Email Marketing: Moosend is an intuitive platform that lets teams create, automate, and analyze email campaigns, keeping you connected with your audience without unnecessary complexity.
- Advanced Automation Features: The reliable automation capabilities let you trigger personalized messages based on user behavior. This means you can nurture leads effectively while your team focuses on strategic initiatives.
- Real-Time Analytics: Moosend provides comprehensive reporting tools that give you insights into campaign performance. This data-driven approach helps executives make informed decisions to optimize marketing strategies and boost ROI.
- Reliable Email Delivery: With SMTP, your emails reach their intended recipients consistently. Businesses benefit from reduced bounce rates and improved communication efficiency.
- Scalability: Whether you're sending a few emails or millions, SMTP scales easily to meet your growing needs. This flexibility helps companies expand their outreach without hitting technical limits.
- Security Features: SMTP protocols improve the security of your email communications. Use its built-in encryption methods to protect sensitive information and build stakeholder trust.
Best fit
- 201–500
- Ecommerce, DTC Brands, Retail, Fashion & Apparel, Beauty & Cosmetics, Health & Wellness, Consumer Goods, Subscription Businesses
- Marketing Manager, Ecommerce Manager, Growth Marketer, CRM Manager, Lifecycle Marketing Manager, Head of Marketing, Founder, DTC Brand Owner
- 1-500 employees
- Marketing Technology, E-commerce, Nonprofit, Education, SaaS
- Marketing Managers, Email Marketing Specialists, Content Creators, Digital Marketing Strategists, Nonprofit Fundraising Coordinators
- 1 to 500 employees
- Martech, SaaS, E-commerce, Digital Marketing, and Nonprofit sectors
- Marketing Managers, E-commerce Managers, Digital Marketers, Content Creators, and Marketing Automation Specialists
- 50 to 500 employees
- Martech, Fintech, SaaS, E-commerce, and Digital Marketing
- Marketing Managers, IT Administrators, Email Marketing Specialists, Sales Executives, and Customer Success Managers
Reasons buyers look elsewhere
- Some alternatives offer built-in AI copywriting, automated creative optimization, and predictive content suggestions directly inside the editor, which can appeal to teams that want more AI-driven campaign assistance without manual setup.
- Brands with heavy international customer bases might need specialized messaging providers with localized SMS routes, compliance support, and pricing optimized for global reach — areas where some competitors excel.
- While Klaviyo supports key ecommerce platforms, organizations using niche or custom systems may require platforms with larger marketplace ecosystems or plug-and-play connectors for non-commerce tools.
- Pricing is high relative to competitors like Mailchimp and ConvertKit, making it less attractive to startups with limited budgets
- Automation features are basic compared to HubSpot and ActiveCampaign, limiting personalization for teams running complex campaigns
- Third-party integrations are limited — teams using Zapier-heavy workflows often switch to platforms with native connectors
- Lacks advanced automation workflows — teams needing complex multi-step sequences often switch to HubSpot or ActiveCampaign
- Price-sensitive buyers find cheaper alternatives like Mailchimp or Klaviyo that cover basic email marketing at half the cost
- Limited onboarding and support — companies wanting hands-on training or dedicated account management choose platforms with stronger customer success teams
- Users may seek alternatives to SMTP due to deliverability issues, as emails can often be marked as spam or face filtering challenges, impacting communication effectiveness and business operations.
- Security concerns are a common reason for exploring alternatives; SMTP lacks advanced encryption and authentication measures, making it vulnerable to interception and unauthorized access.
- The increasing need for real-time communication drives users towards alternatives that offer instant messaging or collaboration features, which are not supported by traditional SMTP protocols.
Software Demo
Demo |
|---|
Need a second opinion?
Get decision help from a software advisor
Share your priorities, budget, and team needs, and we’ll help you narrow the options and understand the tradeoffs before you talk to vendors.
- Independent advice — matched to your business
- Understand the tradeoffs before you talk to vendors
- Free 15-min call with a software advisor.
Step 1 of 4
How big is your team?
We tailor recommendations to companies your size.
How do Klaviyo, Campaign Monitor, Moosend and SMTP Compare on Features?
Total Features | 10 Features | 33 Features | 22 Features | 5 Features |
|---|---|---|---|---|
Unique Features | No unique features | No unique features | No unique features | No unique features |
Get Quote | Get Quote |
Compare Klaviyo, Campaign Monitor, Moosend and SMTP on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
Pricing Option | ||||
|---|---|---|---|---|
Starting From |
|
|
|
|
Pricing Plans |
|
|
|
|
Pricing Page | Pricing information not available |  |  |  |
Klaviyo, Campaign Monitor, Moosend vs SMTP: Other Details
Organization Types supported |
|
|
|
|
|---|---|---|---|---|
Platforms Supported |
|
|
|
|
Modes of support |
|
|
|
|
API Support |
|
|
|
|
Get help choosing | Get help choosing |
Klaviyo, Campaign Monitor, Moosend vs SMTP Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | ✓ Yes |
|---|---|---|
HIPAA | ✗ No | ✗ No |
GDPR | ✓ Yes | ✓ Yes |
ISO 27001 | ✗ No | ✗ No |
Single Sign-On (SSO) | ✓ Yes | ✓ Yes |
Multi-Factor Auth (MFA) | ✓ Yes | ✓ Yes |
Data Encryption | ✓ Yes | ✓ Yes |
Audit Logs | ✓ Yes | — |
Data Residency | 🌐 Global | 🇺🇸 US |
Klaviyo vs Campaign Monitor vs Moosend User Reviews & Rating Comparison
User Ratings | No reviews available for the product | 4.3 (based on 416 reviews) | ||
|---|---|---|---|---|
Rating Distribution | No reviews available for this product | |||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Buyers appreciate Klaviyo’s powerful automation and excellent support but note a learning curve and sales pressure as drawbacks. What buyers like
Common complaints
| Buyer sentiment Users appreciate Campaign Monitor for its ease of use, strong segmentation, and reliable deliverability, though some find advanced features complex and pricing higher at scale. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is positive across 416 reviews, with strong overall satisfaction. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is positive across 11 reviews, with strong overall satisfaction. What buyers like
Common complaints
|
Pros and Cons |
|
|
|
|
Positive Reviews | No reviews available for the product | No reviews available for the product | No reviews available for the product | No reviews available for the product |
| Negative Reviews | No reviews available for the product | No reviews available for the product | No reviews available for the product | No reviews available for the product |
Integrations
Integration with other apps | No Integration information available. | No Integration information available. |
|---|
Klaviyo, Campaign Monitor, Moosend and SMTP Customers
Customers |  YETI  Steve Madden  Bonobos |  Adidas  TEDx  Airbnb | No Customers information available. | No Customers information available. |
|---|
Media and Screenshots
Screenshots |  3 Screenshots |  5 Screenshots |
|---|---|---|
Videos |  1 Videos |  2 Videos |
Alternatives to Klaviyo, Campaign Monitor, Moosend, SMTP
Alternatives |
|---|
Add another option to compare side by side
Search by product name to compare pricing, fit, and buyer feedback in one view.Compare similar software options
Related Blogs and Articles for Email Marketing Software
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, Klaviyo or Campaign Monitor?
- Klaviyo edges out the other on user ratings (4.8 vs -1.0). That said, the best pick depends on your use case, so use the comparison tables above to evaluate each dimension.
- Do Klaviyo and Campaign Monitor offer a free trial?
- Campaign Monitor offers a free trial. Klaviyo does not.
- What is the starting price of Klaviyo vs Campaign Monitor?
- Klaviyo starts at Contact for pricing. Campaign Monitor starts at $10.80 /month.
- What are the top alternatives to Klaviyo?
- Top alternatives to Klaviyo include Outgrow, ActiveCampaign, CleverTap, Moosend, Hey Oliver.
- What are the top alternatives to Campaign Monitor?
- Top alternatives to Campaign Monitor include Moosend, SMTP, EmailOctopus, Zoho Campaigns, Polymail.