Brevo vs Postbox

Mailchimp

Constant Contact

SendGrid

Mailbird

eM Client

Thunderbird

Compare Brevo and Postbox 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

SendGrid is a solution that provides a cloud-based email infrastructure to help relieve businesses of the cost and complexity of maintaining custom email systems. It provides email delivery, scalability and real-time analytics along with APIs. The platform also offers SMTP service, email validation, deliverability insights, and dynamic templates, while supporting multiple programming languages including Node.js, Python, and Java.

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.

Brevo is a CRM and email marketing solution that helps businesses run multi-channel marketing campaigns across email, WhatsApp, SMS, web push, and Facebook ads. Teams can trigger transactional emails, SMS, and WhatsApp notifications over Brevo SMTP and APIs.

A/B Testing

Activity Dashboard

Alerts/Notifications

Archiving & Retention

Autoresponders

Availability Management

Calendar Management

Campaign Analytics

Campaign Management

Campaign Planning

Campaign Scheduling

Campaign Segmentation

CAN-SPAM Compliance

Channel Management

Click Tracking

Collaboration Tools

Confirmations/Reminders

Contact Database

Contact Management

Content Management

Customer Journey Mapping

Customer Segmentation

Customer Surveys

Customizable Branding

Customizable CTAs

Customizable Fields

Customizable Forms

Customizable Reports

Customizable Templates

Customization

Data Import/Export

Data Recovery

Data Security

Drag & Drop

Drip Campaigns

Dynamic Content

Email Campaign Management

Email Distribution

Email Management

Email Marketing

Email Monitoring

Email Templates

Email Tracking

Engagement Tracking

Event Triggered Actions

For Startups

Form Builder

GDPR Compliance

HTML Editor

Image Library

Interaction Tracking

Landing Pages/Web Forms

Lead Capture

Lead Engagement

Lead Management

Lead Nurturing

Lead Qualification

Lead Segmentation

List Management

Live Chat

Marketing Automation

Meeting Management

Message Personalization

Mobile Access

Mobile Optimization

Multi-Campaign

Multi-Channel Communication

Multi-Channel Marketing

Online Booking

Performance Metrics

Personalization

Pipeline Management

Preview Functionality

Queue Management

Real-Time Analytics

Real-Time Data

Reminders

Reporting & Statistics

Reporting/Analytics

Response Management

ROI Tracking

Routing

Sales Pipeline Management

Sales Reports

Scheduling

Segmentation

Shared Inboxes

Signature Management

Simple Mail Transfer Protocol (SMTP)

SMS Marketing

SMS Messaging

Social Marketing

Social Media Integration

Spam Blocker

Subscription Management

Tagging

Task Management

Template Management

Brevo

Android

Web-based

Windows

iPhone

Director

We use for email marketing and its been great for that. Creating campaigns is straight forward with a great tool for designing a campaign within the software.

President

Customer service was superb. They were awesome and I found the editor of the email easier to use than the competitor.

The product has some really good features at a great price. We use chat functionality on our website and it is super easy to design campaigns on the platform.

Proprietor

Also I was extremely impressed with Sendinblue technical support when I had an issue due to an error of my own making - they were responsive, helpful  and courteous.

HOD ITinfra

Very good once it is setup. The highlight of the entire experience is the excellent back end support , who is very understanding and fast in their responses.

Sales and Marketing Executive

A great combination of responsive and helpful customer support, easy to use and rich in tools schemata with a great value for money.

Managing Director

The Layout and features are the best, very user friendly and one of the best services in Email marketing category.

IT Coordinator

Transactional emails are amazingly easy to set up, once you know what you're doing. The UI/UX in clean and "friendly," and the customer support reps are knowledgeable and helpful.

Insurance Agent

Costumer service is outstanding. The platform in general is very intuitive and user friendly.

Sales Associate

Fortunately, I was able to get some helpful suggestions from "Sendinblue" to put things into action. Also, I was grateful that this site allows you to send 300 emails for free.

Marketing Head

I personally liked it very much as it’s very user friendly and lots of customisable templates are there. Most importantly it provides comprehensive analytics of campaign.

Owner

Great UI with very easy to implement APIs and packed full of features. I've been using SendInBlue for a good few years now and would strongly recommend to anyone needing an email sending service.

Software Developer

Additionally, sendinblue does a horrible job documenting and announcing their own vetting process. I once purchased SIB Credit and had no feedback as to why it wasn't credited to my account.

Easy to use interface, making setup a doddle. Simple to consume and operate API with robust guides and docs and brilliant automation and reporting capabilities.

VP of BI

Sendinblue is probably the worst company I have ever dealt with. Not only their support is close to inexistent for users with premium account, but they treat you like a criminal.

We'd gone to some trouble to transition our mailing list, learn the new interface, and get it linked to our website for subscriptions. We now feel that we were misled or tricked.

Business Owner 

I love the ability to create my newsletter my way and the price is great.

Until now i didn't see a single email go to a spam folder. I tested it even on a @live.com email which is very strict about spam.

Brevo screenshot: Brevo campaign creation

Brevo screenshot: Brevo performance overview

Brevo screenshot: Brevo sales pipeline

Freelancers

Large Enterprises

Mid Size Business

Non Profit

Public Administrations

Small Business

eM Client is a powerful email client for Windows and macOS with a clean and easy-to-use interface. It also offers features for calendars, tasks, contacts, notes and chat.

eM Client covers all professional communication needs
for any team or enterprise and easily connects to any email service.

Thunderbird is an on-premise email management platform designed to help businesses securely handle, search, organize, archive, and filter email conversations from within a unified platform. The Mail Account Setup Wizard allows professionals to set up existing user accounts with information, such as email address, name, and password.


Mailbird is a desktop email management application that helps businesses of all sizes synchronize messages from multiple accounts in a centralized inbox and connect the platform with LinkedIn. Mailbird's speed-reading functionality lets employees read at a fast pace to increase email productivity.

Postbox is an email management application that aims to enhance productivity. The application offers an interface that is reminiscent of Apple Mail, providing a familiar experience to users. However, it distinguishes itself with additional capabilities and tools to handle demanding workloads.

Whitelisting/Blacklisting

Postbox

Pastor

I am from the old school and when I had a registration problem I had trouble getting someone to respond.

Strategic Planner

What I enjoy most about Postbox is the ability for me to customize it to my needs. I also enjoy the new features that allow me to quickly form communications and sort my incoming emails.

Filters, rules, folders, quick commands - excellent choices to help speed along message handling. Also excellent capabilities with encryption and signatures.

Software Engineer

The interface is better and can be customized with themes. The software also is more reliable than Apple's offerings, and is solid, reliable software.

Owner/Manager

All and all, I've been super pleased with it's functionality as well as it's ease of use.

founder

Its features and integration with other productivity tools make it a great choice for users who want a robust email management solution.

Account Manager

As a user with multiple projects for multiple enterprises going at the same time, I found myself missing communications or misplacing threads because of the sheer volume.

Partner

Ease of use- Grouping of emails- Ease of archive- Amazing search features.

Product Manager

Notifications are still somewhat ugly, and there is no more specific configuration about that (disable notifications for an account or certain emails, for example).

Reliable, stable Software, fast, and gets continuously improved.

Account director

When I contacted the support, I was asked to paid 8$ to get assistance. I bought a lifetime licence and now I am stuck with a broken software.

Additionally, the software integrates with popular productivity tools, such as zapier, dropbox, etc, making it easy to manage emails in the context of other tasks and projects.

I like the theme option with the software and the ability to organize accounts groups as well as folders etc easily on the fly.

Producer

But for me, it is the simplicity of it all,  that it is quick and easy, I can change the default theme with 1 click, and it only took a few minutes to set up how I wanted it.

Senior Designer

It is easy to use and has so many themes and features. So user friendly and didn't cost an arm and a leg to purchase.

Web Developer

Postbox combines the core features I need for an email app with an excellent support team.

Operations 

I've seen a lot of changes in the app and I have always been incredibly impressed with the quality of product, focus on user security, and customer service.

Ph.D. Student

Overall, I really like this e-mail app. Although, it has some cons which I explained above, it is totally worth to money.

Brevo vs Postbox Comparison (2026)

Brevo

Postbox

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives