Omnisend vs Square Online

PayPal

Mailchimp

Shopify

Constant Contact

Clover

Klaviyo

Compare Omnisend and Square Online based on features, pricing, verified reviews, integrations & more on GetApp. Find out which software is best for your business in 2026.

Mailchimp is a marketing automation platform that allows users to create, send & analyze email & ad campaigns, with email templates, landing pages, and a mobile app

Constant Contact is a digital and email marketing platform that provides tools for creating, sending, and tracking email campaigns. The platform offers customizable email templates, AI writing assistance, and automation features to help businesses reach audience. Additionally, it includes social media marketing capabilities, SMS marketing, and multi-account solutions for organizations managing multiple locations or teams.

Klaviyo is the all-in-one platform built to help B2C companies grow by integrating email/ SMS marketing, full-funnel analytics, and service in one solution. Powered by customer data and built-in AI, Klaviyo makes it easy to scale marketing automation and personalization across all your channels.

Omnisend is an email marketing software designed specifically for ecommerce businesses. It combines email, SMS, and web push notifications in a single platform with pre-built automations for cart abandonment, welcome series, and post-purchase campaigns. The platform features advanced segmentation capabilities that update in real time based on customer behavior and integrates with multiple eCommerce tools.

2-Way Messaging

A/B Testing

Abandoned Cart Saver

Activity Dashboard

Activity Tracking

Alerts/Notifications

Audience Targeting

Automated Responses

Automated Scheduling

Autoresponders

Behavior Analytics

Behavior Tracking

Behavioral Targeting

Campaign Analytics

Campaign Management

Campaign Planning

Campaign Scheduling

Campaign Segmentation

Campaign Tracking

CAN-SPAM Compliance

Channel Management

Click Tracking

Compliance Management

Contact Database

Contact Management

Content Management

Conversion Tracking

Customer Database

Customer Profiles

Customer Segmentation

Customizable Branding

Customizable CTAs

Customizable Fields

Customizable Forms

Customizable Templates

Customization

Dashboard

Data Import/Export

Data Integration

Drag & Drop

Dynamic Content

Email Campaign Management

Email Distribution

Email Management

Email Marketing

Email Templates

Email Tracking

Engagement Tracking

Event Triggered Actions

For eCommerce

Form Builder

Forms Creation & Design

Forms Management

GDPR Compliance

Generative AI

Geotargeting

HTML Editor

Image Library

Landing Pages/Web Forms

Lead Capture

Lead Generation

Lead Management

Lead Segmentation

List Management

Live Chat

Mailing List Management

Marketing Automation

Marketing Calendar

Mass Texting

Message Personalization

Mobile Optimization

Monitoring

Multi-Campaign

Multi-Channel Attribution

Multi-Channel Campaigns

Multi-Channel Communication

Multi-Channel Data Collection

Multi-Channel Marketing

Open Rate Tracking

Performance Metrics

Personalization

Process/Workflow Automation

Product Recommendations

Real-Time Analytics

Real-Time Data

Real-Time Notifications

Real-Time Reporting

Reminders

Reporting & Statistics

Reporting/Analytics

ROI Tracking

Sales Analytics

Scheduled Messaging

Scheduling

Search/Filter

Segmentation

SMS Marketing

SMS Messaging

Omnisend

Web-based

Customer Service Advisor

Overall experience with Omnisend is very positive. It's a great product for a fair price and does what you need very well.

Marketing Specialist

Great email marketing software which allows your marketing team to create amazing newsletters. The great advantage is that you can easily automate some tasks as welcome emails, abandoned cart, etc.

Head of Marketing

Our overall experience is super positive and we've recommended it multiple times to other businesses.

Owner/Graphic Designer

I like how the software is integrated within my eCommerce store, ease of use and the ability to save templates.

Owner / Designer

Love all the great template options Omnisend has to offer. While our decision to move our email marketing business to Omnisend was a forced one, It has turned out to be the best thing that happened.

OWNER/FOUNDER

I find it frustrating that the product picker is just not working, you have to physically copy and paste product description photo and information and paste.

Clerk

It has been a great experience thus far,  the customer service has been amazing, which is so crucial to any successful business.

Blogger/ICT expert

However, Omnisend is actually dedicated to e-commerce, and it's a great piece of software if you are running an online store for the automation capabilities that it provides.

Omnisend has been great for getting email marketing out to customers. It allows for a lot of customization which is nice, and it's also priced very well in comparison to a lot of other options.

This program is so easy to use and integrates seamlessly with Shopify. This is a huge game changer for my business as it allows us to move away from MailChimp, and on to a much more robust platform.

owner

Omnisend is so seamless. I love how easily it integrates with shopify and how easy it is to create and send email blasts with special offers.

Co-Founder

Ease of use, GREAT customer service, great templates but simple to adjust.

General Manager

The app is easy to use and give a good result. The functionalities are give an edge and good results.

For a company like mine (selling jewelry online), that is extremely important. I am always short on time, so any software that makes marketing easier for a reasonable price is attractive to me.

Director

Easy to use, clean email templates provided, also love how quick customer service is - always ready to help.

Marketing & E-commerce Manager

Not all my emails go to my customers and they complaint that our email goes to junk and before this would not happen.

Setting up Omnisend can be a little difficult, especially if this is your first time with email marketing.

Owner

This billing issue has really soured my feeling about this company. The monthly price that they show on their account page is wrong.

Omnisend screenshot: Omnisend SMS marketing

Omnisend screenshot: Omnisend segmentation

Omnisend screenshot: Omnisend reporting

Omnisend screenshot: Omnisend channel performance

Omnisend screenshot: Omnisend workflow performnace

Freelancers

Large Enterprises

Mid Size Business

Small Business

Clover is an all-in-one platform designed to help on and offline retailers, quick service restaurants, and other service businesses manage their point-of-sale operations, with secure payment solutions and reliable business management features

Shopify is a commerce platform that allows anyone to easily sell online, at a retail location, and everywhere in between

PayPal provides an end-to-end suite of tools that can integrate with a business's existing systems and service providers. Its network of shoppers and businesses provides AI-driven data insights to help businesses reach new customers and drive results.

Square Online Store allows small & medium-sized sellers to grow their business with a professional eCommerce website & integrated tools

Omnisend vs Square Online Comparison (2026)

Omnisend

Square Online

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives