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Transactional Email Software - Page 3

Last updated: April 2026

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56 software options

APSIS One logo

Gather data. Automate customer journey. Grow your business.

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APSIS One is an easy-to-use platform for Email, Marketing Automation, SMS, Website Personalisation, E-commerce and more. All you need to improve results, increase retention, and grow your business.

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SMTP logo

Transactional and Email Relay API

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On-demand scale and unmatched deliverability. Whether it's thousands of emails per month or millions, our customers count on us for timely sending and industry-leading deliverability.

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AcyMailing logo

A newsletter and email marketing plug-in.

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With AcyMailing, website operators have the opportunity to personalize their newsletter and email campaigns via WordPress and Joomla. This extension offers tools for creating content based on templates to optimize marketing processes.

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JangoMail logo

Cutting Edge Email Technology

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JangoMail is a web-based email service platform for businesses and organizations of all sizes.

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Lettr logo

Cloud-based transactional email API for artisans

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Lettr is a transactional email platform with HTTP API + SMTP relay, real-time webhooks, analytics, and a visual template editor with version history and a draft/publish workflow for teams.

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Pingram logo

Simple APIs for email, SMS, AI voice, and WhatsApp.

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Pingram (formerly NotificationAPI) is a communications API for email, SMS, voice, and WhatsApp. Built-in infrastructure, A2P 10DLC, and voice AI let developers ship faster with a single, simple API.

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