# Top Free Transactional Email Software - Page 2

## How Many Transactional Email Software Products Does G2 Track?

**Total Products under this Category:** 136

### Category Stats (Jul 2026)

- **Average Rating:** 4.41/5 (↑0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Spotler SendPro (+1.75%) - Among all products in this category, Spotler SendPro recorded the largest rating increase compared to last month

_Last updated: July 21, 2026_

## How Does G2 Rank Transactional Email Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 31,700+ Authentic Reviews
- 136+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

[
Moosend
](https://www.g2.com/products/moosend/reviews)

By [Constant Contact](https://www.g2.com/sellers/constant-contact-5aaee82b-8325-4eeb-b7b7-15fada778076)

[

4.6/5(744)

](https://www.g2.com/products/moosend/reviews)

What do users say?

Users consistently praise Moosend for its ease of use and powerful automation features, which simplify the process of creating and managing email campaigns. The intuitive interface and drag-and-drop f

Pros and Cons

[
Ease of Use (24)
](https://www.g2.com/products/moosend/reviews?qs=pros-and-cons)[
Limited Templates (5)
](https://www.g2.com/products/moosend/reviews?qs=pros-and-cons)

[
Courier
](https://www.g2.com/products/courier/reviews)

By [Courier](https://www.g2.com/sellers/courier)

[

4.5/5(59)

](https://www.g2.com/products/courier/reviews)

What do users say?

Users consistently praise the ease of use and flexibility of Courier, highlighting its ability to simplify notification management across multiple channels. The intuitive interface and robust API allo

Pros and Cons

[
Ease of Use (2)
](https://www.g2.com/products/courier/reviews?qs=pros-and-cons)[
API Integration Issues (1)
](https://www.g2.com/products/courier/reviews?qs=pros-and-cons)

[![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source)

Sponsored

G2 Advertising

Get 2x conversion than Google Ads with G2 Advertising!

G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments.

[
Learn More
](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source)

[
Mailgun
](https://www.g2.com/products/mailgun/reviews)

By [Sinch](https://www.g2.com/sellers/sinch)

[

4.2/5(321)

](https://www.g2.com/products/mailgun/reviews)

What do users say?

Users consistently praise Mailgun for its reliable email delivery and easy integration, making it a preferred choice for developers managing transactional emails. The platform's robust API and detaile

Pros and Cons

[
Ease of Use (23)
](https://www.g2.com/products/mailgun/reviews?qs=pros-and-cons)[
Expensive (11)
](https://www.g2.com/products/mailgun/reviews?qs=pros-and-cons)

[
Sender.net
](https://www.g2.com/products/sender-net/reviews)

By [Sender.net](https://www.g2.com/sellers/sender-net)

[

4.7/5(263)

](https://www.g2.com/products/sender-net/reviews)

What do users say?

Users consistently praise the ease of use and reliable customer support provided by Sender.net, highlighting how quickly they can set up campaigns and receive assistance when needed. The platform's in

Pros and Cons

[
Ease of Use (160)
](https://www.g2.com/products/sender-net/reviews?qs=pros-and-cons)[
Limited Templates (81)
](https://www.g2.com/products/sender-net/reviews?qs=pros-and-cons)

[
Elastic Email
](https://www.g2.com/products/elastic-email/reviews)

By [Elastic Email](https://www.g2.com/sellers/elastic-email)

[

4.4/5(212)

](https://www.g2.com/products/elastic-email/reviews)

What do users say?

Users consistently praise the product for its ease of use and reliable email delivery, making it a preferred choice for both small businesses and developers. The intuitive interface and seamless integ

Pros and Cons

[
Ease of Use (7)
](https://www.g2.com/products/elastic-email/reviews?qs=pros-and-cons)[
Missing Features (4)
](https://www.g2.com/products/elastic-email/reviews?qs=pros-and-cons)

[
HelpCrunch
](https://www.g2.com/products/helpcrunch/reviews)

By [HelpCrunch](https://www.g2.com/sellers/helpcrunch)

[

4.7/5(238)

](https://www.g2.com/products/helpcrunch/reviews)

What do users say?

Users consistently praise the ease of use and responsive support of HelpCrunch, highlighting its intuitive interface that simplifies customer communication. Many appreciate how it consolidates various

Pros and Cons

[
Ease of Use (19)
](https://www.g2.com/products/helpcrunch/reviews?qs=pros-and-cons)[
Limited Customization (4)
](https://www.g2.com/products/helpcrunch/reviews?qs=pros-and-cons)

[
SparkPost
](https://www.g2.com/products/sparkpost/reviews)

By [SparkPost](https://www.g2.com/sellers/sparkpost-c9ab5338-2592-4c25-a156-b1c658cf1362)

[

4/5(73)

](https://www.g2.com/products/sparkpost/reviews)

What do users say?

Users consistently praise the product for its ease of use and responsive support, making it a reliable choice for managing email campaigns. Many appreciate how it simplifies the process of sending ema

Pros and Cons

[
Customer Support (1)
](https://www.g2.com/products/sparkpost/reviews?qs=pros-and-cons)[
Email Spamming (1)
](https://www.g2.com/products/sparkpost/reviews?qs=pros-and-cons)

[
UniOne Email API
](https://www.g2.com/products/unione-email-api/reviews)

By [UniOne](https://www.g2.com/sellers/unione)

[

4.6/5(25)

](https://www.g2.com/products/unione-email-api/reviews)

What do users say?

Users consistently praise the affordable pricing and reliable deliverability of UniOne Email API, highlighting its ease of integration and comprehensive analytics that enhance email campaign performan

Pros and Cons

[
Analytics (3)
](https://www.g2.com/products/unione-email-api/reviews?qs=pros-and-cons)[
Expensive (1)
](https://www.g2.com/products/unione-email-api/reviews?qs=pros-and-cons)

[
SocketLabs
](https://www.g2.com/products/socketlabs/reviews)

By [SocketLabs](https://www.g2.com/sellers/socketlabs)

[

4.5/5(41)

](https://www.g2.com/products/socketlabs/reviews)

What do users say?

Users consistently praise the product for its ease of use and reliable delivery, noting that setup is straightforward and the service effectively ensures emails reach inboxes. Many appreciate the resp

[
Mailmodo
](https://www.g2.com/products/mailmodo/reviews)

By [Mailmodo](https://www.g2.com/sellers/mailmodo)

[

4.5/5(148)

](https://www.g2.com/products/mailmodo/reviews)

What do users say?

Users consistently praise Mailmodo for its interactive email features that enhance engagement, allowing actions like filling forms directly within emails. The platform's user-friendly interface and in

Pros and Cons

[
Ease of Use (5)
](https://www.g2.com/products/mailmodo/reviews?qs=pros-and-cons)[
Expensive (4)
](https://www.g2.com/products/mailmodo/reviews?qs=pros-and-cons)

[
EmailLabs
](https://www.g2.com/products/emaillabs/reviews)

By [EmaillLabs](https://www.g2.com/sellers/emailllabs)

[

4.8/5(38)

](https://www.g2.com/products/emaillabs/reviews)

What do users say?

Users consistently praise the product for its reliable email delivery and responsive customer support, highlighting how it ensures emails reach recipients without issues. The platform's ease of use an

Pros and Cons

[
Customer Support (15)
](https://www.g2.com/products/emaillabs/reviews?qs=pros-and-cons)[
Expensive (2)
](https://www.g2.com/products/emaillabs/reviews?qs=pros-and-cons)

[
BigMailer.io
](https://www.g2.com/products/bigmailer-io/reviews)

By [Founder Bits](https://www.g2.com/sellers/founder-bits)

[

5/5(23)

](https://www.g2.com/products/bigmailer-io/reviews)

What do users say?

Users consistently praise the customer support and affordability of BigMailer.io, highlighting its effectiveness in managing email campaigns without unnecessary complexity. Many appreciate the user-fr

Pros and Cons

[
Ease of Use (1)
](https://www.g2.com/products/bigmailer-io/reviews?qs=pros-and-cons)

[
Rebump - Email Follow Up
](https://www.g2.com/products/rebump-email-follow-up/reviews)

By [Rebump](https://www.g2.com/sellers/rebump)

[

4.9/5(55)

](https://www.g2.com/products/rebump-email-follow-up/reviews)

What do users say?

Users consistently praise the ease of use and time-saving automation of Rebump, highlighting how it simplifies email follow-ups and enhances productivity. Many appreciate its straightforward setup and

[
Mailjet
](https://www.g2.com/products/mailjet/reviews)

By [Sinch](https://www.g2.com/sellers/sinch)

[

3.9/5(176)

](https://www.g2.com/products/mailjet/reviews)

What do users say?

Users consistently praise the intuitive interface and affordability of Mailjet, highlighting its ease of use for both beginners and experienced marketers. Many appreciate the platform's ability to cre

Pros and Cons

[
Ease of Use (5)
](https://www.g2.com/products/mailjet/reviews?qs=pros-and-cons)[
Limitations (3)
](https://www.g2.com/products/mailjet/reviews?qs=pros-and-cons)

[
Mailify
](https://www.g2.com/products/mailify/reviews)

By [Mailify](https://www.g2.com/sellers/mailify)

[

4.3/5(39)

](https://www.g2.com/products/mailify/reviews)

What do users say?

Users consistently praise the ease of use and variety of templates offered by Mailify, which simplify the email marketing process. Many appreciate its ability to automate campaigns and provide detaile

Pros and Cons

[
Customer Support (1)
](https://www.g2.com/products/mailify/reviews?qs=pros-and-cons)[
Lack of Clarity (1)
](https://www.g2.com/products/mailify/reviews?qs=pros-and-cons)

[![G2 Advertising](/assets/my-g2-logo-41632af6f81a240a0a9886638f412b2ac9a29f4001534f8c83be89a58ef9d45d.svg "G2 Advertising")](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source)

Sponsored

G2 Advertising

Get 2x conversion than Google Ads with G2 Advertising!

G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments.

[
Learn More
](https://sell.g2.com/case-studies/how-aisdr-uses-g2-ads-to-turn-g2-into-top-5-traffic-source)

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