Best Transactional Email Software - Page 8

How Many Transactional Email Software Products Does G2 Track?

Total Products under this Category: 146

Category Stats (Sep 2026)

  • Average Rating: 4.41/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Turbosmtp (+4.49%) - Among all products in this category, Turbosmtp recorded the largest rating increase compared to last month

Last updated: September 01, 2026

How Does G2 Rank Transactional Email Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 31,800+ Authentic Reviews
  • 146+ 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.

G2 Grid® for Transactional Email Software

G2 Grid® for Transactional Email Software plotting products by satisfaction and market presence

Highlighted products: Customer.io, Brevo Marketing Platform, Amazon Simple Email Service (Amazon SES), Omnisend, Dotdigital, Email API, Intuit Mailchimp Email Marketing, and Zoho ZeptoMail.

Underlying data: [Grid® JSON](https://www.g2.com/categories/transactional-email/grids.json?focus%5B%5D=customer-io&focus%5B%5D=brevo-marketing-platform&focus%5B%5D=amazon-simple-email-service-amazon-ses&focus%5B%5D=omnisend&focus%5B%5D=dotdigital&focus%5B%5D=netcore-private-limited-email-api&focus%5B%5D=intuit-mailchimp-email-marketing&focus%5B%5D=zoho-zeptomail)

Bolscale

Bolscale is a review-automation platform built specifically for entrepreneurs selling on bol.com, the largest online marketplace in the Netherlands and Belgium. Reviews make or break your success on bol.com, they drive your rating, your reputation, and your chances of winning the Buy Box ("koopblok"). Bolscale puts that growth on autopilot. After every order, it automatically sends customizable, on-brand review-request emails to your customers, so you collect more (and better) reviews without manually chasing a single buyer. Key features: - Automated review-request emails, triggered after each bol.com order - Customizable email templates that match your brand - A/B testing to maximize open rates and review conversion - Insights and benchmarks on review performance, ratings, and response rates - Tools to spot and manage negative reviews before they hurt your reputation - Purpose-built for the bol.com marketplace - no generic webshop workarounds Bolscale is made for bol.com sellers of every size, from solo entrepreneurs to scaling brands, who want to grow their ratings, reputation, and revenue with far less manual work.

Who Is the Company Behind Bolscale?

Campaign by Dolist

Campaign by Dolist is an email and SMS activation platform designed to manage both marketing campaigns and transactional messaging within a single environment. It enables organizations to centralize data, automate communications, and deliver legitimate messages at scale while prioritizing deliverability, security, and regulatory compliance. Campaign supports a wide range of use cases, including: - Email and SMS marketing campaigns (newsletters, promotions, announcements) - Transactional and notification messages triggered in real time - Marketing automation workflows and customer journeys - Contact data management, segmentation, and preference handling - Consent and unsubscribe management aligned with GDPR requirements For transactional messaging, Campaign can be connected to existing systems to trigger messages via API and/or SMTP relay, with access to delivery and performance data for monitoring and optimization. The platform is designed with a strong focus on deliverability and sender reputation, supported by monitoring mechanisms and best practices applied at both infrastructure and messaging levels. Campaign is developed and hosted in France, ensuring strong data sovereignty, GDPR-by-design capabilities, and high standards of data security. It integrates with existing business tools and systems using standard connectivity methods such as REST APIs, webhooks, and secure data exchanges.

Average Rating: 4.5/5.0

Total Reviews: 1

Who Is the Company Behind Campaign by Dolist?

  • Seller: Dolist
  • Year Founded: 2000
  • HQ Location: Pessac, France
  • LinkedIn® Page: www.linkedin.com
    64 employees on LinkedIn®
  • Ownership: Privately held
  • Phone: 05 57 26 25 70

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Campaign by Dolist?

What Are G2 Users Discussing About Campaign by Dolist?

Closum

Plataforma de Marketing e Comunicações Digitais. Ajudamos a comunicar com a sua audiência de forma segmentada e personalizada — em escala. Capte novos contactos através de Landing Pages e Pop-ups com formulários personalizáveis, e promova o seu negócio através de Newsletters ou Campanhas em massa de SMS.

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate Closum?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Closum?

  • Seller: Closum
  • Year Founded: 2016
  • HQ Location: Vila Nova de Famalicão, PT
  • LinkedIn® Page: www.linkedin.com
    9 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Closum?

Codermails

Codermails is a reliable SMTP service provider offering high-performance email delivery solutions. Known for its robust infrastructure, Codermails ensures fast, secure, and efficient email transmission for businesses of all sizes. Their service supports bulk email sending, transactional emails, and personalized campaigns, making it ideal for marketing and communication needs. Codermails is user-friendly, with easy integration into existing systems and extensive API support. The company prioritizes deliverability, with features like advanced analytics, bounce management, and real-time reporting to maximize email campaign success. Competitive pricing and exceptional customer support make Codermails a top choice for SMTP services.

Who Is the Company Behind Codermails?

Dead Simple Email

Email infrastructure for AI agents. Send, receive, and automate — all through a clean REST API. No SMTP configuration, no IMAP headaches. Start free with 5 inboxes.

Who Is the Company Behind Dead Simple Email?

DreamCampaigns

DreamCampaigns all-in-one email & SMS marketing tools enable you to send super personalized, optimized, responsive & beautiful emails & text campaigns in just a few clicks. Trigger personalized emails & SMS based on customer actions and send automated follow-ups. Respond to customer behavior and boost calls to action with messages directly on your site. Grow your business with features like unlimited previews, email Deliverability Score, automated segmentation and marketing automation.

Average Rating: 3.5/5.0

Total Reviews: 1

Who Is the Company Behind DreamCampaigns?

Who Uses This Product?

  • Company Size: 100% Small

What Are G2 Users Discussing About DreamCampaigns?

Engage

Engage is a marketing tool that helps businesses improve customer engagement and retention through personalized messages.

Average Rating: 4.9/5.0

Total Reviews: 5

How Do G2 Users Rate Engage?

  • Has the product been a good partner in doing business?: 8.9/10 (Category avg: 9.0/10)

Who Is the Company Behind Engage?

Who Uses This Product?

  • Company Size: 20% Large, 20% Medium

What Are Recent G2 Reviews of Engage?

IGSendMail

IGSendMail is an email marketing platform where every paid plan includes unlimited contacts. Instead of per-subscriber billing that scales as your list grows, you pay a flat monthly rate based on send volume — so your cost stays predictable whether you have 500 contacts or 500,000. Every paid plan includes built-in email verification. Verify your list before you send, reduce bounces, and protect your sender reputation — no separate service or additional cost required. Core features: - Drag-and-drop campaign builder with a ready-to-use template library - Unlimited automations on every paid plan — build workflows for welcome sequences, abandoned carts, re-engagement, and more - Advanced list segmentation based on behavior, engagement, tags, and custom fields - A/B testing for subject lines, content, and send times - Real-time campaign analytics with open rates, click-through rates, and revenue tracking - Transactional email support for order confirmations, password resets, and receipts - REST API for custom integrations and programmatic campaign management Plans: Free — 2,500 contacts, 2,000 emails/month. No credit card required. Starter ($19/mo) — Unlimited contacts, 25,000 emails/month, 2,500 verifications. 3 users. Pro ($49/mo) — Unlimited contacts, 100,000 emails/month, 10,000 verifications. 5 users, white-label branding. Business ($99/mo) — Unlimited contacts, 300,000 emails/month, 50,000 verifications. 10 users, dedicated sending IP, SSO. Annual billing saves 20% on all paid plans. Built for businesses outgrowing per-subscriber pricing, first-time senders launching their first campaigns, e-commerce brands optimizing lifecycle email, and agencies managing multiple client accounts.

Average Rating: 3.0/5.0

Total Reviews: 1

Who Is the Company Behind IGSendMail?

  • Seller: IGSendMail
  • Year Founded: 2023
  • HQ Location: Seattle, Washington
  • Twitter: @igsendmail
    3 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Do G2 Reviewers Say About IGSendMail?

AI-generated summary from verified user reviews

Cons
  • Users find the monthly price very expensive, yet some are still considering its potential benefits.

indemandly

indemandly is a conversational marketing tool for business websites & social media.

Who Is the Company Behind indemandly?

JangoMail

JangoMail offers a number of features you can use to create high-quality professional looking emails.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind JangoMail?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of JangoMail?

What Are G2 Users Discussing About JangoMail?

Lettermint

Lettermint is a European-based transactional email service provider that helps businesses ensure their critical emails—like order confirmations, password resets, and notifications—reliably reach their customers' inboxes. Operating entirely within the EU, Lettermint combines GDPR-compliant infrastructure with developer-friendly tools including robust APIs, SDKs, and SMTP relay services. The platform stands out for its commitment to deliverability, privacy-focused analytics, and transparent pricing, making it an ideal choice for European businesses and developers who need a trusted partner for their transactional email needs. With support for multiple domains and scalable plans from free tier to enterprise, Lettermint simplifies email delivery while maintaining the highest standards of data protection and compliance.

Who Is the Company Behind Lettermint?

  • Seller: Lettermint
  • Year Founded: 2025
  • HQ Location: Zwolle, NL
  • Twitter: @lettermintco
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®
Yukta Rustagi
YR
Researched and written by Yukta Rustagi
Updated October 3, 2024