Software Alternatives & Startups

MailBluster VS Slack

Compare MailBluster VS Slack and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

MailBluster logo MailBluster

Thrive with MailBluster: A powerful and affordable email marketing platform. Perfect for sending unlimited emails seamlessly using Pro features like automation, segmentation, email templates, etc.

Slack logo Slack

A messaging app for teams who see through the Earth!
  • MailBluster MailBluster - Bulk email marketing tool
    MailBluster - Bulk email marketing tool //
    2026-07-07
  • MailBluster MailBluster - Drag and drop email builder
    MailBluster - Drag and drop email builder //
    2026-07-07
  • MailBluster MailBluster - Email automation
    MailBluster - Email automation //
    2026-07-07
  • MailBluster MailBluster - Unlimited leads
    MailBluster - Unlimited leads //
    2026-07-07
  • MailBluster MailBluster - Real-time tracking and report
    MailBluster - Real-time tracking and report //
    2026-07-07
  • MailBluster MailBluster - Multi SMTP providers
    MailBluster - Multi SMTP providers //
    2026-07-07
  • MailBluster MailBluster - Managed SMTP
    MailBluster - Managed SMTP //
    2026-09-02

MailBluster is an email marketing platform designed to help businesses communicate more effectively with their audiences. It supports unlimited leads and provides practical tools for creating, automating, sending, and tracking email campaigns.

MailBluster serves more than 50,000 businesses, including digital agencies, ecommerce brands, and large organizations with high-volume sending requirements. Its flexible features help teams manage campaigns efficiently as their marketing needs grow.

Multi SMTP lets you connect multiple preferred SMTP providers to improve deliverability, reliability, and sending performance. MailBluster SMTP provides a fully managed alternative for sending campaigns directly through MailBluster with zero SMTP configuration. You send campaigns. We handle everything else.

Build automated workflows, organize leads with segmentation, and use A/B testing to compare campaign variations. Create responsive emails with the drag-and-drop editor or customize ready-made templates. Inline and pop-up forms help you collect leads, while double opt-in supports list quality and deliverability. Real-time tracking and reports provide insights into campaign performance and subscriber activity.

Support is available 24/7 for questions and assistance. Contact MailBluster at https://mailbluster.com/contact

  • Slack Landing page
    Landing page //
    2023-07-18

MailBluster

$ Details
freemium $5 / Annually (+ email costs from $0.60 per 1,000 emails, based on usage)
Platforms
AWS Web Browser Cloud
Release Date
2015 January
Startup details
Country
United States
State
Delaware
City
Delaware

Slack

Website
slack.com
$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

MailBluster features and specs

  • Automation
    Save time with automated workflows that send the right emails at the right moment.
  • Email templates
    Pick from stunning, ready-made templates or create your own from scratch.
  • Drag & drop email composer
    Create responsive and professional emails in minutes. No coding needed!
  • List segmentation
    Target and re-target the right audience by grouping subscribers based on opens, clicks, or purchase history.
  • A/B testing
    Test two versions of your campaign to see which one drives more opens, clicks, or conversions.
  • Real-time tracking & report
    Track opens, clicks, bounces, complaints, and eCommerce conversions with charts & data.
  • Double opt-in
    Grow a high-quality list, build trust, and boost email deliverability with verified sign-ups.

Slack features and specs

  • Real-Time Communication
    Slack allows for instant messaging and real-time communication, which facilitates quick decision-making and immediate problem solving among team members.
  • Channel Organization
    Users can create channels for different teams, projects, or topics, keeping discussions organized and easy to follow.
  • Integration Capabilities
    Slack integrates with a variety of other tools and services, such as Google Drive, Trello, and GitHub, allowing seamless workflow management.
  • Search Functionality
    Slack’s powerful search feature makes it easy to find specific messages, files, or information within your team's communication history.
  • Custom Notifications
    Users can tailor their notification settings to minimize distractions while ensuring they stay informed about important discussions.
  • Cross-Platform Availability
    Slack is available on multiple platforms, including desktop, web, and mobile, ensuring that team members can stay connected from anywhere.

Possible disadvantages of Slack

  • Information Overload
    With constant streams of messages and notifications, Slack can sometimes lead to information overload, making it difficult for users to keep up.
  • Cost
    While Slack offers a free tier, many advanced features are only available in the paid plans, which can be costly for larger organizations.
  • Dependency on Internet
    Slack requires a stable internet connection, which can be a limitation for users in areas with unreliable or slow internet service.
  • Potential for Distraction
    The real-time nature of Slack can sometimes be distracting, pulling team members away from deep, focused work.
  • Privacy Concerns
    As with any digital communication tool, there are potential privacy and security concerns that organizations need to manage.
  • Scalability Issues
    Large teams or companies may find it challenging to manage and scale their usage of Slack effectively as the number of channels and conversations grows.

MailBluster videos

Send Your First Email Campaign (MailBluster)

Slack videos

Review: How & Why We Use Slack At Our Office

More videos:

  • Review - What is Slack?
  • Tutorial - Slack App Tutorial: How & Why We Use SLACK For Our Remote Team

Category Popularity

0-100% (relative to MailBluster and Slack)
Email Marketing
100 100%
0% 0
Communication
0 0%
100% 100
Email Marketing Platforms
Project Management
0 0%
100% 100

Questions & Answers

As answered by people managing MailBluster and Slack.

How would you describe the primary audience of your product?

MailBluster's answer

MailBluster's primary audiences are startups and small businesses. Mainly, the companies that are looking for more affordable email marketing solutions. Such as agencies managing campaigns for numerous clients, organizations sending millions of emails, and e-commerce firms focused on automation-driven growth.

Who are some of the biggest customers of your product?

MailBluster's answer

Some of the biggest customers of MailBluster include Alphaniti, Omakase, Oldflix, eCareerPoint, Circlebloom, Instituto de Direito Real, Phamify, and Codeanywhere, among others.

What makes your product unique?

MailBluster's answer

The highly affordable pricing plans and easy-to-use email marketing features, such as automation, segmentation, and scalability to manage email campaigns, are what make MailBluster unique.

Why should a person choose your product over its competitors?

MailBluster's answer

Compared to the other email marketing tools, MailBluster is extremely cost-effective with a pay-as-you-go pricing model. It offers multiple SMTP providers and offers enterprise-grade features at only a fraction of the cost.

What's the story behind your product?

MailBluster's answer

Back in early 2015, when we reached 100,000 users on one of our startups, ThemeWagon, we needed a more affordable way to send newsletters without compromising the quality of the sending. We made an MVP and sent out a couple of million emails, and 99.8% of them got delivered. At that point, ThemeWagon was saving more than $2,150 a month on email marketing software subscription fees. After that, we didn’t want to keep this to ourselves and decided to share this sweet deal with everyone else. And so we did and made MailBluster.

Which are the primary technologies used for building your product?

MailBluster's answer

MailBluster uses Amazon Web Services (AWS), specifically EC2 and Lambda, to host microservices and manage the platform's infrastructure, enabling scalable and controlled resource utilization. MailBluster's core technology comprises AWS services, Terraform for infrastructure management, and multiple microservices that operate on EC2 and Lambda. It also features a modern drag-and-drop email editor, as well as campaign and list management automations, along with many more essential ones.

User comments

Share your experience with using MailBluster and Slack. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare MailBluster and Slack

MailBluster Reviews

  1. israt
    · technical writer at technext ·
    Lowest Cost Email Marketing Tool Ever

    It is a Handy and Classy Looked with the easiest features. Drag and drop of mailbluster were interesting. it was easy and smooth handling.

    Competitors: EmailOctopus, MailChimp, Sendy
  2. The best email sending service I have ever used!!

    MailBluster is saving thousands of dollars every month from last year. We have switched to MailBluster after spending with 'expensive' email sending software. Right now we are the most happy organization with the service of MailBluster. Definitely, it is providing excellent service at the most cheapest price. It is cost effective and a rapid answering support team is just WOW! Overall, I would recommend, use MailBluster and feel the difference!

    Pros:    List segmentation|Timewarp delivery|Drag & drop email builder|Cost effective|62k free emails/m|A/b testing|Realtime tracking & report|Best customer support
    Cons:    No custom smtp|No other smtp other than amazon ses
  3. Ashraful Prium
    · CEO at ThemeWagon Inc. ·
    The Best EmailMarketing Software I've used for ThemeWagon.com

    For the last couple of years, from MailBluster's "alpha" phase, it is saving our company thousands of dollars every month on email marketing. I definitely love this software. You can see more here at Themewagon's blog

    Pros:    Unlimited contacts|Low price|Timewarp delivery|Drag and drop email builder|Outstanding customer support
    Cons:    No custom smtp options|Only amazonses is supported

10 Best Campaign Monitor Alternatives You Can Find
Note: MailBluster pricing includes a $60 annual subscription cost for the Pro plan. Before sending emails with MailBluster, you must connect an AWS account that has been confirmed, approved, and removed from the sandbox environment. Keep in mind that the prices for Amazon SES and MailBluster differ. A valid AWS account is required for both MailBluster’s Starter and Pro...
Source: mailbluster.com
Ditch Your Expensive Email Platform for MailBluster
Ultimately, I chose to make the move to MailBluster when discovering how much money I’d save by using SES to deliver emails to my audience. It’s also important to note that I wouldn’t have switched if MailBluster didn’t have the following features.
MailBluster vs EmailOctopus
Both MailBluster and EmailOctopus provides bulk newsletter sending service via AmazonSES. They offer many identical sounding features, and up to a certain threshold they both are free. In this article, we will make a detailed comparison of the following key features of MailBluster and EmailOctopus:

Slack Reviews

  1. MeganMills
    A good chat messenger for teams

    i use it at my job it has really helped me keep myself updated with team news and updates. i would prefer it over teams and discord

    Competitors: Microsoft Teams, Discord
    Pros:    Super simple
    Cons:    Channel swithcing
  2. San93
    · Director at Polar credit ·
    Essential for Team Collaboration but Needs Better Notification Management

    Slack has transformed how we communicate at Polar Credit, making collaboration faster and more organized. The channel-based messaging, direct integrations with essential tools, and real-time notifications keep our teams connected, reducing reliance on long email threads. The search function is a major plus, helping retrieve past conversations and shared files effortlessly.

    Competitors: Discord
    Pros:    Organized team communication through channels and threads|Seamless integrations with apps like google drive, trello, and zoom
    Cons:    Initial setup and implementation take time|Limited message history on the free plan
  3. EllaSvensson
    · Marketing Manager at Freelancer ·
    A Must-Have for Teamwork

    Slack has completely transformed how our team works together. The channels keep conversations organized, and we never lose track of important discussions.

    It integrates with tools like Google Drive and Zoom, making collaboration effortless. Sharing files is easy, and the search feature saves so much time when finding old messages.

    Slack is simple, customizable, and keeps everyone connected—whether we’re in the office or remote. It’s the perfect tool for teamwork!

    Competitors: Discord, Microsoft Teams

Top 12 Online Collaboration Tools for Smart Working
Slack is a cloud-based app built to simplify communication and teamwork. As one of the essential team collaboration tools, it enhances communication and productivity within teams. It’s packed with features that help teams stay connected, collaborate, and stay on top of things. A standout feature is the ability to create channels—dedicated spaces for conversations around...
Source: niftypm.com
7 best Mattermost alternatives for secure business messaging
Slack has a mobile and desktop app that supports remote teams to communicate seamlessly. On Slack, you can send files, documents, images, and videos. with your teammates.
Source: www.rocket.chat
20 Telegram Alternatives to Chat With in 2024
Slack works more like a forum than Teams does – falling somewhere in between a forum and a chat software. It lets you organize discussions into different channels, as well as by thread. You can invite others into a thread by @mentioning them, and it lets you add lots of different types of content. Slack works really well for 1:1 audio meetings, “huddles,” that give you the...
Why we switched to Mattermost
Now, obviously core messaging functionality is critical. Mattermost is great there, but so is Slack. In fact, Slack features like third-party integrations and threaded messaging were missed greatly (thank you, Mattermost, for recently adding threaded messaging). So the relative parity between the solutions from a ‘speeds and feeds’ perspective was table stakes, but we...
Source: netfoundry.io
Microsoft Teams Vs Clariti: Which one should you choose?
The main reason behind the sudden rise of Teams is it is being offered at no added cost to Office 365 users. This strategy paid for Teams as it was able to increase its market share and overtake its potential rival Slack in no time. Though Microsoft is not earning any revenue (they may actually be losing money in selling Teams), they are able to sustain due to their deep...
Source: clariti.app

Social recommendations and mentions

Based on our record, Slack seems to be a lot more popular than MailBluster. While we know about 237 links to Slack, we've tracked only 3 mentions of MailBluster. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

MailBluster mentions (3)

  • Illustration Trends to Dominate Over the Web at 2022
    MailBluster is an email marketing tool that embraces some of the aforementioned illustration trends while getting on board with any illustration. Look at how they use hand-drawn illustrations, nature-inspired patterns and soft backgrounds with thick and prominent outlines to express what they want to. - Source: dev.to / almost 4 years ago
  • Best solution for one-time sending 7000 emails
    I would check out MailBluster. It should only cost you $0.70 in total to send the 7,000 emails. You do have to sign up for an AWS account and there is some setup involved, but once you have everything configured it works well and is super cheap. Source: almost 5 years ago
  • The Best ever Low-cost Email Marketing software - MailBluster
    On top of all these, you will get our top-notch customer support if you face any issues. If you have questions, please visit http://mailbluster.com/. Also, you can see our FAQ here: https://mailbluster.com/faq/. - Source: dev.to / over 5 years ago

Slack mentions (237)

View more

What are some alternatives?

When comparing MailBluster and Slack, you can also consider the following products

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

EmailOctopus - Email marketing for less, via Amazon SES

Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.

Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES

Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.