Backblaze B2 vs Mailgun Comparison
Detailed comparison of features, pricing, and capabilities
Last updated April 4, 2026
Overview
Compare key metrics and features at a glance
Backblaze B2
https://www.backblaze.com/b2
Backblaze B2 is a cloud storage service that provides scalable object storage at 1/4th the cost of Amazon S3. The service offers robust APIs, CLI tools, and integrations with various applications, allowing developers and businesses to store and retrieve any amount of data. It features strong durability, native encryption, and lifecycle rules for data management.
Mailgun
https://www.mailgun.com
Mailgun is a transactional email API service that enables developers to send, receive, and track emails through their applications using RESTful APIs. The service provides powerful email validation, tracking, and analytics features, along with SMTP integration and detailed logs for debugging. Mailgun specializes in handling large volumes of automated emails including notifications, confirmations, and marketing communications.
Quick Comparison
| Detail | Backblaze B2 | Mailgun |
|---|---|---|
| Category | Cloud Storage | Email Marketing |
| Starting Price | Free | Free |
| Plans Available | 1 | 5 |
| Features Tracked | 1 | 16 |
| Founded | 2007 | 2010 |
| Headquarters | San Mateo, USA | San Francisco, USA |
Features
Detailed feature-by-feature comparison
Feature Comparison
| Feature | | |
|---|---|---|
| api | ||
| RESTful Email APIs | ||
| S3-Compatible API | ||
| compliance | ||
| Suppression Lists | ||
| core | ||
| Bounce Classification | ||
| Email Template Builder | ||
| Email Validation API | ||
| Inbound Routing | ||
| Inbox Placement | ||
| List Segmentation | ||
| Rapid Fire | ||
| SMTP Relay | ||
| Send Time Optimization | ||
| Tracking & Analytics | ||
| custom | ||
| Custom Sending Domains | ||
| Dedicated IPs | Add-on | |
| integration | ||
| Email Parsing | ||
| security | ||
| Authentication Protocols | ||
Pricing
Compare pricing plans and value for money
Backblaze B2
From $0/mo
Price Components
- storage: $0.006/GB
- download: $0.01/GB
Best For
Developers, businesses, and AI teams seeking affordable, S3-compatible object storage with high performance and low egress costs for scalable data needs.
Mailgun
From $0/mo
Price Components
- base_fee: $0/month
- emails: $0/email (100 included)
- base_fee: $15/month
- emails: $0/email (10000 included)
- overage_emails: $0.0018/email
Best For
Developers and apps needing reliable, high-volume transactional email APIs with validation and tracking, not broad marketing campaigns.
Integrations
See which third-party services are supported
Supported Integrations
Coming Soon
Integration comparison data for Backblaze B2, Mailgun is being collected and will be available soon.
Strengths & Limitations
Key strengths and limitations of each service
Backblaze B2
Developers, businesses, and AI teams seeking affordable, S3-compatible object storage with high performance and low egress costs for scalable data needs.
- S3-compatible API enables seamless drop-in replacement for AWS S3 tools and code.
- Costs 1/5th of Amazon S3 with flat rates, free first 10GB, and generous free egress up to 3x storage.
- Supports Object Lock for ransomware protection and 10TB file uploads with no total capacity limit.
- B2 Overdrive delivers 1Tbps throughput for AI/ML/HPC at hyperscaler speeds without egress fees.
- Lacks advanced enterprise features like multi-region replication found in hyperscalers.
- Smaller company size may raise concerns about long-term scalability for massive enterprises.
- Limited feature set compared to full-suite platforms, focusing mainly on core storage.
Mailgun
Developers and apps needing reliable, high-volume transactional email APIs with validation and tracking, not broad marketing campaigns.
- Developer-centric RESTful APIs and SMTP relay excel for high-volume transactional emails, unlike marketing-focused ESPs like Mailchimp.
- Email Validation API and Inbox Placement reduce bounces and optimize deliverability, key in a growing market.
- Rapid Fire enables burst sending for millions of emails on Scale+ plans, ideal for time-sensitive notifications.
- Flexible overage fees prevent hard caps, supporting seamless scaling from $15/mo Basic plan.
- Holds only 0.22% market share, ranking #27, trailing leaders like Mailchimp and SendGrid.
- Lacks drag-and-drop editors and audience automation of full marketing platforms like HubSpot.
- Higher tiers like Scale at $90/mo required for SSO and dedicated IPs, pricier for advanced needs.
Company Info
Company details and background
Backblaze B2
Mailgun
Comparison FAQ
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