Mailgun
VS
SendPost

Mailgun vs SendPost: Which is Right for You?

Mailgun helps developers send email. SendPost goes further, it’s designed to maximize email deliverability with tools that identify issues before they hurt performance.

Email API + SMTP relay
Cloud MTA
Email Deliverability Platform

Trusted by companies worldwide

Facing Challenges with Mailgun?

Manual IP Warmup

SendPost automates IP warmup by throttling sending according to each ISP sending speed limitations as your volumes scale

Sending Health Visibility

Don’t stop at surface-level stats. SendPost delivers deep visibility across IP pools, SMTP errors, bounce intelligence, and ISP-level performance, all included out of the box.

Support Tiered & Limited

Fast responses and expert deliverability help are locked behind higher plans.

Why developers choose SendPost

Superior Deliverability

Our entire platform, from our advanced infrastructure to our expert support, is built to ensure your emails reach the inbox, not the spam folder.

Actionable Insights, Not Just Data

Go beyond basic metrics. Get deep analytics, proactive alerts, and a full Deliverability CRM out of the box to quickly diagnose and fix issues.

Developer-First Experience

Clean APIs, extensive SDKs, and powerful webhooks supported by 24/7 expert assistance to help you build and scale faster.

Start Your Free Trial

SendPost is a smarter choice for businesses that depend on email

Here's a summary and non-biased comparison between SendPost and Mailgun

Scroll to compare
Feature
Deliverability Alerts & Notifications
Excellent

Real-time automated alerts for bounce spikes, SMTP errors, and reputation shifts.
Strong

Logs and analytics available, but users often need to monitor manually.
IP / Domain Reputation & Monitoring
Excellent

Granular IP & domain monitoring with automated alerts when reputation issues arise.
Strong

Good tools for reputation and dedicated IPs, but less automation in rapid detection.
IP Pool / Routing / Send Throttling / Warm-up
Strong

IP pool management, automated warm-up, intelligent routing, and throttling.
Strong

Solid IP infrastructure and dynamic pools, but no self-healing automation.
Analytics & Event Logging Granularity
Excellent

Deep filters on event logs. Retains logs up to 3 years (longer by request) with detailed deliverability and ISP-level stats.
Strong

Good analytics and logs, but often shorter retention unless on higher plans and not way to quickly filter them.
Pricing Model
Strong

SendPost has a higher entry point but at high volumes is the most cost-effective solution on the market.
Strong

Mailgun appears cheaper at first but costs balloon with increases in volume and add-ons that can be unexpected.
Migration Tools / High-Volume Onboarding
Excellent

Built-in focus on smoother migrations while maximizing preservation of email deliverability and domain reputation.
Average

Offers enterprise onboarding, but no migration-specific tooling to help ensure onboarding success.

Email API & SMTP Relay

Reliable infrastructure to send and manage millions of emails.

3 features
Scales from thousands to millions of emails
SDKs in 14+ programming languages
Personalization with custom fields & templating

Sub-Accounts & Groups

Organize and isolate email streams across teams or clients.

3 features
Unlimited sub-accounts
Group categorization for analytics
Reputation tracking per stream

Deliverability Stats

Track performance and troubleshoot issues with deep insights.

3 features
Bounce, open, and click rates
Metrics by account, sub-account, and IP
ISP and SMTP-level visibility

Deliverability Alerts & Notifications

Stay ahead of problems with real-time monitoring.

3 features
Alerts for blacklisting or score dips
Notifications via Slack or email
Detect ISP-specific deliverability issues

Pro Deliverability Tools

Optimize how emails are delivered.

3 features
Automated IP warmup
Throttle controls
Smart routing

Frequently asked questions

Everything you need to know about SendX and email marketing

Why choose SendPost over Mailgun?

Mailgun is a great starting point for developers who need quick, reliable email delivery. But when your sending volume scales, and inbox placement becomes mission-critical, SendPost is the platform built to deliver.

How does SendPost ensure deliverability for transactional emails?

We specialize in the high-speed, reliable delivery of transactional emails. Our infrastructure is built on managed IP pools with proactive monitoring to protect sender reputation. Unlike bulk marketing platforms, our systems are optimized to ensure your critical emails—like password resets, invoices, and alerts—reach the inbox instantly.

How does SendPost's pricing compare for high-volume sending?

SendPost is significantly more cost-effective for transactional and high-volume email. Our pay-as-you-go pricing is tied directly to your usage, not your subscriber count. This means you don't overpay for storing contacts and only get charged for the emails you actually send, making it a more economical and scalable solution for applications.

How easy is it to migrate to SendPost from another email service?

Migration is incredibly simple. For most applications, switching to SendPost is as easy as updating your SMTP credentials or changing an API endpoint in your code. Our clear documentation and dedicated technical support are available to ensure your transition is smooth, fast, and without any disruption to your service.

Is SendPost just an API and SMTP relay?

While our core offering is a robust API and SMTP service, SendPost provides a complete email delivery solution. All accounts include access to a powerful dashboard with deep, real-time analytics on deliverability, engagement, and bounces. This gives your team full visibility and control over your entire email program, not just a black box API.

Still have questions? We're here to help.

Ready to switch to a smarter email platform?

Stop wrestling with complex infrastructure. Start your free trial today and experience a platform designed for deliverability from the ground up.

Get Started
Maximize Inbox Placement
Automate Deliverability Tasks
Scale Without Limits