UniOne vs Mailgun: Which Email Platform Is Right for You?

Mailgun is a well-known email service, yet some teams look for a simpler setup, clearer pricing, and more hands-on support. UniOne offers reliable email delivery, an easy-to-use API and SMTP relay, built-in validation, and real-time analytics — without unnecessary complexity. If you want full control over your emails and a platform that’s easy to work with as you grow, UniOne is a strong alternative worth considering.

UniOne: Your Reliable Partner

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Comparing UniOne and Mailgun: Key Features

Here’s why UniOne can be considered as a solid Mailgun alternative for your transactional and marketing emails:

UNIONE Mailgun
Purpose API-first transactional and marketing email delivery platform built for Developer-focused email API and SMTP service for transactional and marketing emails at scale
Email Sending Up to 60 million outgoing emails hourly with integration through the Web API, and up to 50 thousand outgoing emails hourly via the SMTP connection RESTful email API and SMTP relay with high scalability; actual throughput varies by plan and volume tier
Deliverability Strong deliverability rates with SPF, DKIM, DMARC, custom sending and tracking domains without limitations on all plans, dedicated IPs as an option High deliverability with shared and dedicated IP environments, only one sending domain for Basic plan, up to 1,000 sending domains on higher tiers (deliverability optimization tools are only available for selected top plans)
Sending Streams Projects feature lets you separate sending streams (by audience, region, type, etc.) for better structuring and control Flexible APIs and SMTP with subaccounts on larger plans but no built-in support for fully independent sending streams divided by project
Email Editor & Templates Availability 300+ customizable ready-to-use templates for marketing, transactional, and triggered emails; AI-powered visual editor with HTML support included in all plans Email template builder with responsive templates (only 7 basic drafts available) and dynamic content options; UI and HTML editors for building templates
Analytics & Reporting Real-time analytics with webhooks, logs, and exportable reports; up to 100 days of detailed data storage (45 days of events retention for all plans, up to 180 days aggregated data storage, and up to 400 days campaigns reports availability) Log retention period varies by the plan (1-30 days); webhooks provide real-time data on email actions, but link tracking is only available for higher plans
Security & Compliance GDPR-compliance, two-factor authentication, OAuth sign-in, detailed activity logs, and strong permission controls for shared accounts, including possible API access restriction by IP address GDPR, HIPAA, and ISO 27001 compliance; 2FA support for all plans; multi-user access is only available for higher tiers
Email Validation Built-in email validation API with up to 6,000 free validation credits (the volume depends on the pricing plan) to help clean lists before sending Email validations are only available starting from the Foundation plan as an add-on, with free 5,000 credits included in the Scale plan
Support 24/7 live chat and email support with onboarding and deliverability assistance included on all plans Support varies by plan tier, and for most of the plans is provided in the form of Tickets with no guaranteed response time, while chat support is only available for the Scale plan users
Pricing Transparent, affordable pricing with a generous 4-month free trial and flexible add-ons (paid options start at $4/month for a trial plan including 6,000 monthly emails) There’s a free tier with 100 emails/day available; paid plans start at ~$15/month with an option to get a 30-day trial period
Purpose
UNIONE API-first transactional and marketing email delivery platform built for
SendGrid Developer-focused email API and SMTP service for transactional and marketing emails at scale
Email Sending
UNIONE Up to 60 million outgoing emails hourly with integration through the Web API, and up to 50 thousand outgoing emails hourly via the SMTP connection
SendGrid RESTful email API and SMTP relay with high scalability; actual throughput varies by plan and volume tier
Deliverability
UNIONE Strong deliverability rates with SPF, DKIM, DMARC, custom sending and tracking domains without limitations on all plans, dedicated IPs as an option
SendGrid High deliverability with shared and dedicated IP environments, only one sending domain for Basic plan, up to 1,000 sending domains on higher tiers (deliverability optimization tools are only available for selected top plans)
Sending Streams
UNIONE Projects feature lets you separate sending streams (by audience, region, type, etc.) for better structuring and control
SendGrid Flexible APIs and SMTP with subaccounts on larger plans but no built-in support for fully independent sending streams divided by project
Email Editor & Templates Availability
UNIONE 300+ customizable ready-to-use templates for marketing, transactional, and triggered emails; AI-powered visual editor with HTML support included in all plans
SendGrid Email template builder with responsive templates (only 7 basic drafts available) and dynamic content options; UI and HTML editors for building templates
Analytics & Reporting
UNIONE Real-time analytics with webhooks, logs, and exportable reports; up to 100 days of detailed data storage (45 days of events retention for all plans, up to 180 days aggregated data storage, and up to 400 days campaigns reports availability)
SendGrid Log retention period varies by the plan (1-30 days); webhooks provide real-time data on email actions, but link tracking is only available for higher plans
Security & Compliance
UNIONE GDPR-compliance, two-factor authentication, OAuth sign-in, detailed activity logs, and strong permission controls for shared accounts, including possible API access restriction by IP address
SendGrid GDPR, HIPAA, and ISO 27001 compliance; 2FA support for all plans; multi-user access is only available for higher tiers
Email Validation
UNIONE Built-in email validation API with up to 6,000 free validation credits (the volume depends on the pricing plan) to help clean lists before sending
SendGrid Email validations are only available starting from the Foundation plan as an add-on, with free 5,000 credits included in the Scale plan
Support
UNIONE 24/7 live chat and email support with onboarding and deliverability assistance included on all plans
SendGrid Support varies by plan tier, and for most of the plans is provided in the form of Tickets with no guaranteed response time, while chat support is only available for the Scale plan users
Pricing
UNIONE Transparent, affordable pricing with a generous 4-month free trial and flexible add-ons (paid options start at $4/month for a trial plan including 6,000 monthly emails)
SendGrid There’s a free tier with 100 emails/day available; paid plans start at ~$15/month with an option to get a 30-day trial period

What Makes UniOne Stand Out

Designed to Scale with Any Business
Send a few hundred or millions of emails — UniOne adapts easily as your business grows, without changing tools or workflows while offering better pricing for your growing needs.
Highly Rated, Always-Available Support Team
Get fast (we respond in less than 10 minutes), friendly help from a dedicated team 24/7, whether you’re setting things up or optimizing performance.
Simple and Efficient Email API Integration
A clean, well-documented API and ready-to-use libraries for popular programming languages make integration quick and painless for developers and technical teams.
Real-Time Alerts via Webhooks
Stay informed about your email performance with instant updates on delivery, opens, clicks, and errors — perfect for monitoring and automation.
Extensive Collection of Mobile-Optimized Templates
Choose from hundreds of ready-to-use, responsive templates for transactional and marketing emails, with pre-optimized and customizable mobile preview mode.
Deep Analytics and Detailed Activity Insights
At UniOne, you get access to four types of reports for advanced analytics that give you full visibility into sending behavior, engagement, and performance.
Robust, Secure, High-Performance SMTP Infrastructure
A stable SMTP relay backed by a team with 15+ years of experience in the niche ensures fast, secure email delivery of your campaigns with consistent results.
Streamlined Email Testing for Perfect Results
Test your emails, templates, and configurations with our sandbox domain and free SMTP Debug Tool before sending to real recipients to make sure every message looks and sends right.
Flexible Sending Projects
UniOne lets you separate transactional and marketing traffic, apps, teams, or regions into independent sending projects — each with its own settings, analytics, and permissions.

UniOne Pricing Overview

Free Trial

All features of the STANDARD PLAN plus

Starting at
$0 / month
  • 6,000 emails per month for free during the first 4 months since you sign up

Start with UniOne in minutes and see how smooth email sending can be. Use your trial plan to send onboarding sequences, app notifications, transactional emails, or full marketing campaigns — with the same deliverability and features you’ll have on paid plans.

Once the trial ends, continue for just $4/month, with flexible options that grow alongside your business.

Send smarter, faster, and with confidence — no prior commitment, just results.

Standard

Starting at
$6 / month
50 000 emails/month
  • 24/7 support via live chat and email by a responsive, experienced team
  • Fast, reliable sending for onboarding flows, password resets, and critical updates
  • Scalable bulk emails for launches, announcements, and engagement campaigns
  • Easy integration via SMTP, REST API, or SDKs for Ruby, PHP, and C#
  • Works seamlessly with CRMs, analytics platforms, and app tools
  • Strong deliverability with SPF, DKIM, DMARC, and custom tracking domains
  • 300+ professionally designed templates for notifications, updates, and newsletters
  • AI-powered visual editor for quick, clean, mobile-ready email design
  • Real-time analytics and metrics for opens, clicks, and conversions via dashboard or webhooks
  • Smart segmentation with custom tags and flexible sending projects
  • Detailed reporting with up to 100 days of stored data and CSV export
  • Built-in email validation API with free credits included
  • Secure by default — two-factor authentication, Microsoft & Google OAuth, full GDPR compliance, IP restriction option

Extra emails beyond the included volume cost up to $0.75 per 1,000 emails. Extra messages
Plan - $/1,000
≤ 100K - $0.75
150K - $0.70
300K - $0.60
700K - $0.50
1,5M - $0.45
3M - $0.30

Extra email validations beyond the included volume cost $2 / 1,000 validations. Included validations
Plan - quantity
≤ 50K - 100
≥ 100K - 6000

INDIVIDUAL

All features of the STANDARD PLAN plus

Individual Pricing
  • Flexible email volumes matching your actual usage and growth
  • Custom validation plans to keep lists clean and engagement high
  • Smooth onboarding with 24/7 priority support from deliverability specialists
  • Dedicated success manager to help fine-tune sending and performance
  • Personalized consulting to ensure your emails consistently reach the inbox — forget about the spam folder

Get a tailored plan that scales with your business — let’s build it together.

Switch to UniOne — And Send Smarter

Thinking about moving on from Mailgun? Thanks to our free trial, you can migrate to UniOne and start sending emails with confidence. Get solid deliverability, a clean and developer-friendly API, built-in validation, and real 24/7 support — all with clear pricing and flexible setup. Whether you’re sending transactional emails or scaling marketing campaigns, UniOne gives you the control and simplicity you need to grow without friction.

What Clients Say About UniOne

FAQ

UniOne works great for businesses of all sizes. Whether you’re a small startup sending your first transactional emails or a large enterprise running complex campaigns, UniOne scales with your needs. You get the same reliable delivery, flexible pricing, intuitive tools, and responsive support no matter how many emails you send — which makes it especially appealing for small teams that want an easy yet powerful solution.
UniOne is built by an experienced team on a robust, secure foundation designed to handle high-volume sending with confidence, and has been proving its reliability for 8 years in a row so far. We rely on industry standards like SPF, DKIM, and DMARC for authentication, support two-factor authentication and OAuth sign-in, and comply with GDPR. Having round-the-clock monitoring and advanced protocols protecting from downtime in place, UniOne keeps email infrastructure stable and secure so your messages reach inboxes safely.
Setting up email sending with UniOne is very simple. You can choose between SMTP or the Web API, both of which provide clear documentation and examples for developers. With SMTP API, most users are up and running in minutes: just add your sending domain, verify DNS settings, and update your credentials. Integration through HTTP API might require some more time while also giving you extra features and flexibility. However, if you ever need help, UniOne’s support team is available 24/7 to guide you step by step.
Yes — UniOne offers dedicated IPs as an option, so you can have your own sending reputation separate from shared infrastructure. This is especially helpful as your volume grows or if deliverability and branding are critical to your business. Combined with authentication and reputation tools, dedicated IPs give you extra control and predictability.

Elevate Your Email Performance with UniOne

UniOne is built for guaranteed and scalable email delivery enhancing your customer communication journeys. Start with a 4-month free trial that includes 6,000 emails per month and explore the platform at your own pace. From transactional messages and automated notifications to full marketing campaigns, UniOne delivers your emails quickly and reliably, with 24/7 expert support whenever you need help.


When you’re ready to scale, upgrading is simple. Choose an affordable plan or request a custom offer tailored to your business needs and growth goals — and keep your email performance moving forward with confidence.