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About

MailerSend is a hassle-free transactional messaging service designed so that developers can integrate transactional email, SMS, and now WhatsApp quickly and effortlessly into their stack. Intuitively designed so anyone can contribute, with a powerful sending infrastructure and flexible payment plans that empower you to scale your sendings quickly. With over a decade of deliverability expertise, and inbuilt email verification, you can rest easy knowing your sender reputation will remain intact. Plus, premium features including sender identities, dedicated IPs, and priority support make for an advanced, comprehensive solution. Get started for FREE with 500 emails, then upgrade for as little as $7/month for up to 5000 emails. Want to try more? Get a 14-day free trial of our Professional plan and test-drive every feature it has to offer.

About

Sendmux gives AI agents their own inbox and a controlled way to send email. Each agent can receive messages, read threads, handle attachments, send replies, and react to new mail through signed webhooks or Server-Sent Events. Teams can send through Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES. Sendmux can spread sending across providers with weighted routing, sender-domain routing, health checks, failover, and quotas by second, minute, hour, or day. Developers get Mailbox, Sending, and Management APIs, OpenAPI docs, SDKs, the sendmux CLI, MCP tools, and Sendmux Skills. The platform also covers tenant isolation, mailbox-scoped API keys, custom domains, logs, metrics, and usage-based pricing with no per-seat or per-mailbox fees.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Companies that need a transactional email solution

Audience

AI agent builders that need an email API for AI agents

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Email API
SMTP relay
Webhooks
WhatsApp API
Transactional SMS API
API permissions
CC & BCC recipients
Multiple sending domains
Inbound route
Survey emails
Email split testing
Email verification
Sending domain reputation management
Suppression list management
Email tracking & analytics
Custom tracking domain
Data retention
Dynamic content and conditions
HTML email editor
Drag & drop email builder
Rich text editor
File manager
24/7 email support
24/7 chat support
Deliverability consultation
Multiple users and roles
Free Version Supported
Free Trial Supported

Pricing

$0.15 per 1000 emails
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Supported

Company Information

MailerSend
Founded: 2020
United States
www.mailersend.com

Company Information

Sendmux
Founded: 2026
Australia
sendmux.ai

Alternatives

SendGrid

SendGrid

Twilio SendGrid

Alternatives

EmailLabs

EmailLabs

Vercom
BlueFox Email

BlueFox Email

Innovaris Group
Mailgun

Mailgun

Sinch
SendHQ

SendHQ

Vynara Technologies
SMTP.com

SMTP.com

Ziff Davis
SendPost

SendPost

SendWorks

Categories

Email APIs Supported
Email Verification Supported
SMS Marketing Supported
SMTP Supported

Categories

Agentic AI Supported
Email APIs Supported

Email Deliverability Features

Deliverability Alerts Supported
Deliverability Reporting Supported
DMARC Analytics Supported
Email Address Verification Supported
Email Content Testing Supported
Email Previewing Supported
Inbox Placement Testing Supported
IP Blacklist Monitoring Supported
Reputation Reporting Supported

Email Verification Features

Bulk Email Verification Supported
Catch-all Server Detection Supported
Disposable Email Detection Supported
Domain Check Not Supported
Mail Server Validation Supported
Single Email Verification Supported
Spam Trap Detection Supported
Syntax Check Supported

SMS Marketing Features

2-Way Messaging Supported
Artificial Intelligence Supported
Contact Management Not Supported
Mass Texting Supported
Message Personalization Supported
MMS Supported
Mobile Coupons Not Supported
Mobile Keywords Not Supported
Polls / Voting Not Supported
Reporting/Analytics Supported
Scheduled Messaging Supported
Shortcodes Not Supported
Text-to-Win Not Supported

Transactional Email Features

A/B Testing Supported
Contact Database Not Supported
Dynamic Content Supported
Email Monitoring Supported
Mailing List Management Supported
Reporting/Analytics Supported
Spam Check Supported
Template Management Supported

Integrations

Zapier Supported
Axis LMS Supported
BI Book Supported
Claude Not Supported
CodeConductor Supported
Integrately Supported
LangChain Not Supported
Make Supported
Model Context Protocol (MCP) Not Supported
Pabbly Connect Supported
Python Not Supported
Quickwork Supported
Ruby Not Supported
Supalaunch Supported
Truto Supported
Vercel AI SDK Not Supported
WHMCS Supported
WhatsApp Supported
WordPress Supported
nuevoMailer Supported

Integrations

Zapier Supported
Axis LMS Not Supported
BI Book Not Supported
Claude Supported
CodeConductor Not Supported
Integrately Not Supported
LangChain Supported
Make Not Supported
Model Context Protocol (MCP) Supported
Pabbly Connect Not Supported
Python Supported
Quickwork Not Supported
Ruby Supported
Supalaunch Not Supported
Truto Not Supported
Vercel AI SDK Supported
WHMCS Not Supported
WhatsApp Not Supported
WordPress Not Supported
nuevoMailer Not Supported
Claim MailerSend and update features and information
Claim MailerSend and update features and information
Claim Sendmux and update features and information
Claim Sendmux and update features and information