Best Transactional Email Software - Page 10

Relayzo

Relayzo is a robust, self-hosted email marketing solution designed to give your business full control over your campaigns and data. Engineered for marketers and technical teams alike, Relayzo offers an all-in-one platform where you can: • Customize & Control: Tailor your email templates, automate workflows, and manage subscriber lists—ensuring every campaign aligns perfectly with your brand and messaging. • Advanced Automation: Leverage powerful automation tools to create personalized drip campaigns, trigger-based emails, and A/B testing routines that optimize your engagement and conversion rates. • Real-Time Analytics: Gain deep insights into campaign performance with comprehensive dashboards that track open rates, click-throughs, and other key metrics in real time. • Enhanced Deliverability: Enjoy robust deliverability features designed to maximize inbox placement while maintaining compliance with data privacy standards. • Seamless Integrations: Easily connect with your existing CRM, e-commerce platforms, or other marketing tools to streamline your workflow and centralize your marketing efforts. With Relayzo, you not only secure your data behind your own firewall but also benefit from the flexibility to scale and customize your email marketing strategy as your business grows. Enjoy complete autonomy over your marketing operations with a solution built to empower your business every step of the way.

Rocketmailer

A digital messaging platform that helps your business communicate personally, reliably and automatically via email, SMS and voice broadcasting - at scale. *ONLY AVAILABLE IN AFRICA.

Average Rating: 4.5/5.0

Total Reviews: 1

Sarv TES

Sarv Transactional Email Service (Sarv TES) is a Pay as uses service with real-time easy access of statistics like open, click, bounce, delivered, complaints by Dashboard & HTTP API with Webhooks method in JSON, XML and POST data structure.

Sendmux

Sendmux gives AI agents their own email inbox and a controlled way to send mail. Each agent can have a dedicated mailbox, read threads, handle attachments, send replies, and react to new messages through webhooks or Server-Sent Events. For teams building agents that need real email in production, that means fewer custom glue scripts and fewer fragile Gmail-style workarounds. Outbound email can run through Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES. Teams can spread sending across providers with weighted routing, sender-domain routing, health checks, failover, and quotas by second, minute, hour, or day. That matters when one provider is not enough, or when customers already have approved sending infrastructure they want to keep using. Sendmux also gives developers the practical pieces around the inbox: Mailbox, Sending, and Management APIs, OpenAPI docs, SDKs for TypeScript, Python, Go, PHP, and Ruby, the sendmux CLI, MCP tools, and official Sendmux Skills for agent workflows. It is built for AI agent products, automation agencies, platform builders, support agents, scheduling agents, ops workflows, and controlled BYO-provider outbound email setups. Pricing is usage-based, with no per-seat or per-mailbox fees.

Sidemail.io

smtply

SMTPly is email relay software enabling legacy devices to send messages via Microsoft 365 using OAuth2 authentication. Running as a local Windows service, it converts SMTP connections into Microsoft Graph API calls, ensuring data remains local without third-party servers. Its architecture includes an SMTP listener, relay queue with retry logic, and a Graph sender managing OAuth2 tokens for secure delivery. Security features include DPAPI encryption, certificate store integration, and health monitoring for certificate expiration alerts. A live mail tracker provides visibility into relayed messages, while usage reports summarize activity and errors. The software supports STARTTLS, implicit TLS, IP whitelisting, and sender domain filtering. Advanced editions offer multi-tenant routing, rate limiting, Prometheus metrics, and encrypted backups. Enterprise features include REST APIs, sandbox modes, outbound routing rules, and SIEM forwarding. Compliance tools ensure proof chains.

SMTP Server

SMTP is a simple mail transfer protocol which is used for sending bulk emails to the mass audience. The SMTP server is primarily used to send, receive or relay messages between sender and receiver. The servers we provide are whitelabelled and compatible with major clients.

TriSun Software

Userlist

Customer messaging tool for SaaS companies. More efficient than building it yourself; less complex than Intercom.

Average Rating: 5.0/5.0

Total Reviews: 2

Volanea

Waypoint Email API

Waypoint is an email platform and API. Software teams use Waypoint to build, orchestrate, and monitor email notifications – with little to no code.