Brevo vs Thunderbird

Mailchimp

Gmail

Constant Contact

Microsoft Outlook

SendGrid

Mailjet

Compare Brevo and Thunderbird 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

Brevo screenshot: Brevo manage campaigns

Brevo screenshot: Brevo create automations

Brevo screenshot: Brevo SMS campaigns

Freelancers

Large Enterprises

Mid Size Business

Non Profit

Public Administrations

Small Business

Microsoft Outlook is a personal information manager from Microsoft which helps users communicate, manage schedules & find what they need quickly & easily

Gmail is a free, advertising-supported email service offered as part of Google Workspace (formerly G Suite), with 15GB of storage, color-coded inbox filters, and 'unsend' button

With GDPR-compliant infrastructure and proven deliverability, Mailjet is the best Email Marketing Software & Email API for Teams. Marketers  design, deliver, and automate  email newsletter while developers power transactional email via robust API platform. 

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.


Inbox Management

Mobile App

Multiple User Accounts

Search/Filter

Thunderbird

Linux

SEO supervisor

I am thrilled to share my exceptional experience with Thunderbird, As a professional constantly inundated with emails, finding an effective and efficient solution has been a game-changer for me.

CEO, IT Admin, Purchasing Decisions

I am generally satisfied with Thunderbird and have been using it now for 4-5 years. It provides an affordable solution that is relatively easy to use.

Student

Thanks for this innovative mailbox helping me benefit my time for more time at home. Please do keep working for this best service.

Founder & CEO

Moreover, it also supports adding SMTP mail which is really helpful. Also, the notifications are quite reliable and timely.

E-commerce Consultant

Highly recommended, the best free email client.

Artist/Producer/Visual Designer

Thunderbird is a fast and reliable program, supports a lot of email accounts without paying a single cent.

I like that it's free and open source, and it's incredibly customizable. There's a ton of community extensions that are available to be installed with minimal setup.

senior system specialist

I didn't come up with anything that bothered me.

Teacher: Digital Illustration 

I find the interface very, very dated. It is cluttered, the fonts are 1990's  and the way that I can't read an email without scrolling down drives me crazy.

Operations Analyst

Free and Open Source: Thunderbird Mail is a free and open-source application, which makes it a cost-effective solution for individuals and small businesses.

founder

Thunderbird also has many great add-ons, if you combine thunderbird built in features with some add-ons, in terms of features, thunderbird is able to compete with other paid software.

Verification expert 

Lack of support: Thunderbird is maintained by a small community of developers, so users may not receive prompt support or updates.

It has a rather childish menu bar layout in black and white.

Digital Marketer

Ability to integrate with Protonmail is a plus as well.

Tech Acct MGR

For the most part it is an easy setup of your email. It is a free source email so you can't beat the price.

Ease of use, simple set-up. We use this across all our platforms.

Senior Lecturer

Thunderbird updates often break existing add-ons and there is a delay until these add-ones are updated to work with the latest version.

You email is archived locally and the size of the archive is only limited by your available hard drive space. Thunderbird also integrates well with providers like Gmail.

Brevo vs Thunderbird Comparison (2026)

Brevo

Thunderbird

Overview

Video & Screenshots

Pricing

User reviews

Key features

Integrations

Alternatives