# Litmus, Mailgun vs Twilio SendGrid Email API Comparison

| | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Star Rating** | 4.6 out of 5 | 4.2 out of 5 | 4.0 out of 5 | 
| **Total Reviews** | 447 | 321 | 368 | 
| **Largest Market Segment** | Mid-Market (42.6% of reviews) | Small-Business (80.5% of reviews) | Small-Business (68.3% of reviews) | 
| **Entry Level Price** | Contact Us Per Year | $0.00 Per Month | $14.95 to $29.95  per month  | 

---
## Top Pros & Cons

### Litmus

Pros:
- Email Management (38 reviews)
- Email Marketing (38 reviews)

Cons:
- Missing Features (9 reviews)
- Slow Performance (9 reviews)

### Mailgun

Pros:
- Ease of Use (23 reviews)
- Reliability (18 reviews)

Cons:
- Expensive (11 reviews)
- Email Issues (8 reviews)

### Twilio SendGrid Email API

Pros:
- Ease of Use (2 reviews)
- Easy Integrations (2 reviews)

Cons:
- Difficult Setup (1 reviews)
- Limited Templates (1 reviews)

---
## Ratings Comparison
| Rating | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
  | **Meets Requirements** | 9.2 (366 reviews) | 8.8 (280 reviews) | 8.5 (317 reviews) | 
  | **Ease of Use** | 9.2 (368 reviews) | 8.7 (283 reviews) | 8.3 (320 reviews) | 
  | **Ease of Setup** | 9.0 (138 reviews) | 8.7 (197 reviews) | 8.2 (182 reviews) | 
  | **Ease of Admin** | 9.0 (112 reviews) | 8.8 (184 reviews) | 8.2 (175 reviews) | 
  | **Quality of Support** | 9.0 (295 reviews) | 8.1 (225 reviews) | 7.5 (253 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.9 (108 reviews) | 8.7 (172 reviews) | 7.8 (164 reviews) | 
  | **Product Direction (% positive)** | 8.8 (343 reviews) | 7.4 (281 reviews) | 7.2 (302 reviews) | 

---
## Pricing

### Litmus

#### Entry-Level Pricing

Plan: Litmus Enterprise

Price: Contact Us Per Year

Description: Power every stage of your email workflow.

Key Features:
- Unlimited users
- Unlimited Email Previews
- Unlimited Litmus Personalize Impressions

[Browse all 2 editions](https://www.g2.com/products/litmus/pricing)

#### Free Trial

No

### Mailgun

#### Entry-Level Pricing

Plan: Free

Price: $0.00 Per Month

Description: Flexible plans built for email delivery. Try it out for free. Free plan includes 100 emails/day.

Key Features:
- 100 emails per day
- Ticket support
- RESTful email APIs and SMTP relay

[Browse all 4 editions](https://www.g2.com/products/mailgun/pricing)

#### Free Trial

Yes

### Twilio SendGrid Email API

#### Entry-Level Pricing

Plan: ESSENTIALS (40K, 100K Packages)

Price: $14.95 to $29.95  per month 

Description: Two packages to meet your mail sending needs 

Key Features:
- Easy to Use APIs and Webhooks
- Detailed Analytics and Reporting
- DKIM Customization 

[Browse all 3 editions](https://www.g2.com/products/twilio-sendgrid-email-api/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Email Marketing

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | 8.3/10 | 250 |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Email Marketing

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Email and Mobile Preview** | 9.4 (230 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Manage Email Lists** | Feature Not Available | Not enough data | Not enough data | 
| **High-Volume Sending** | Feature Not Available | Not enough data | Not enough data | 
| **Building and Personalizing Emails** | 8.9 (202 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Sending Outbound Emails** | Feature Not Available | Not enough data | Not enough data | 
| **Manage Email Deliverability** | 8.6 (176 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Automated Email Responses** | Feature Not Available | Not enough data | Not enough data | 
| **Multi-user Account** | 9.1 (167 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Surveys** | Feature Not Available | Not enough data | Not enough data | 

#### Reporting & Analytics

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **A/B Testing** | Feature Not Available | Not enough data | Not enough data | 
| **Basic Reporting** | 8.8 (178 reviews) | Not enough data | Not enough data | 

#### Generative AI

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **AI Text Generation** | 6.3 (49 reviews) | Not enough data | Not enough data | 
| **AI Text Summarization** | Feature Not Available | Not enough data | Not enough data | 

#### Agentic AI - Email Marketing

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

#### Integration

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Data Import & Export Tools** | Feature Not Available | Not enough data | Not enough data | 
| **Integration APIs** | 7.7 (94 reviews) | Not enough data | Not enough data | 
| **Breadth of Partner Applications** | 7.7 (98 reviews) | Not enough data | Not enough data | 
| **CRM Integration** | 7.7 (87 reviews) | Not enough data | Not enough data | 
| **Social Media Integration** | Feature Not Available | Not enough data | Not enough data | 
| **E-Commerce Integration** | Feature Not Available | Not enough data | Not enough data | 

### Transactional Email

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | 8.4/10 | 255 |
| **Twilio SendGrid Email API** | 8.5/10 | 150 |

#### Administration

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Template Creation** | Not enough data | 7.2 (87 reviews) | 7.9 (85 reviews) | 
| **Preset Template Availability** | Not enough data | 6.9 (81 reviews) | 7.5 (77 reviews) | 
| **Custom Unsubscribe** | Not enough data | 8.1 (119 reviews) | 8.1 (84 reviews) | 
| **Email Segmentation** | Not enough data | 7.7 (113 reviews) | 8.1 (89 reviews) | 
| **Detailed Server Logs** | Not enough data | 8.4 (213 reviews) | 7.9 (97 reviews) | 
| **Notifications** | Not enough data | 8.2 (174 reviews) | 8.3 (100 reviews) | 

#### Integrations

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Webhooks** | Not enough data | 8.7 (170 reviews) | 8.9 (91 reviews) | 
| **Event Tracking API** | Not enough data | 8.7 (160 reviews) | 8.8 (84 reviews) | 
| **Mail Send API** | Not enough data | 9.3 (215 reviews) | 9.3 (122 reviews) | 
| **Spam Filter Testing** | Not enough data | 7.9 (123 reviews) | 8.3 (72 reviews) | 

#### Platform

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Custom Tracking Domain** | Not enough data | 9.0 (170 reviews) | 9.2 (86 reviews) | 
| **Multiple Domains** | Not enough data | 8.8 (175 reviews) | 8.8 (71 reviews) | 
| **Dedicated IP** | Not enough data | 8.1 (100 reviews) | 8.6 (74 reviews) | 
| **Documentation** | Not enough data | 8.7 (217 reviews) | 8.4 (118 reviews) | 
| **Sender Reputation Management** | Not enough data | 8.2 (181 reviews) | 8.3 (109 reviews) | 
| **Tracking & Reporting** | Not enough data | 8.5 (219 reviews) | 8.3 (121 reviews) | 
| **Enterprise Scalability** | Not enough data | 8.5 (142 reviews) | 8.6 (87 reviews) | 
| **Performance and Reliability** | Not enough data | 8.9 (229 reviews) | 8.7 (126 reviews) | 

### Email Deliverability

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | 8.9/10 | 162 |
| **Mailgun** | 9.0/10 | 7 |
| **Twilio SendGrid Email API** | 8.4/10 | 145 |

#### Diagnosis

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **IP Address ** | 8.6 (114 reviews) | 9.0 (5 reviews) | 8.3 (97 reviews) | 
| **Domains** | 8.8 (116 reviews) | 9.2 (6 reviews) | 8.8 (105 reviews) | 
| **Content ** | 9.3 (143 reviews) | Not enough data | 8.5 (99 reviews) | 
| **Policy Compliance** | 9.0 (119 reviews) | 9.0 (5 reviews) | 8.7 (98 reviews) | 

#### Tracking

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Processing Time** | 8.8 (30 reviews) | 8.9 (6 reviews) | 8.9 (116 reviews) | 
| **Placement ** | 8.9 (28 reviews) | Not enough data | 8.3 (102 reviews) | 
| **Open Rate** | 8.9 (125 reviews) | 9.3 (5 reviews) | 8.6 (117 reviews) | 
| **Time to Open** | 8.9 (124 reviews) | Not enough data | 8.5 (108 reviews) | 
| **Alerts** | 8.8 (28 reviews) | 8.7 (5 reviews) | 8.4 (103 reviews) | 

#### Reporting

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Campaign Performance** | 9.0 (123 reviews) | Not enough data | 8.3 (98 reviews) | 
| **Domain Reputation** | 8.9 (30 reviews) | 8.7 (5 reviews) | 8.1 (110 reviews) | 
| **Brand Reputation** | 8.9 (28 reviews) | Not enough data | 8.3 (95 reviews) | 
| **Blacklist and Whitelist** | 9.0 (29 reviews) | Not enough data | 8.0 (109 reviews) | 

#### Agentic AI - Email Deliverability

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 8.1 (7 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 8.9 (6 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Location-Based Marketing

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Administration

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Geofencing** | Feature Not Available | Not enough data | Not enough data | 
| **Wi-Fi Marketing** | Feature Not Available | Not enough data | Not enough data | 
| **Beacons** | Feature Not Available | Not enough data | Not enough data | 
| **IP Geolocation** | Feature Not Available | Not enough data | Not enough data | 

#### Agentic AI - Location-Based Marketing Features

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 

#### Marketing

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Geolocation** | Feature Not Available | Not enough data | Not enough data | 
| **Campaign Automation** | Feature Not Available | Not enough data | Not enough data | 
| **Analytics** | Feature Not Available | Not enough data | Not enough data | 
| **Security Compliance** | Not enough data | Not enough data | Not enough data | 

### E-Commerce Personalization

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Visitor Behavior

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Monitoring** | Feature Not Available | Not enough data | Not enough data | 
| **Targeting** | Feature Not Available | Not enough data | Not enough data | 
| **Guided Selling** | Feature Not Available | Not enough data | Not enough data | 

#### Templates

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Library** | Feature Not Available | Not enough data | Not enough data | 
| **Customization** | Feature Not Available | Not enough data | Not enough data | 
| **Optimization** | Feature Not Available | Not enough data | Not enough data | 

#### Personalization

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Recommendation** | Feature Not Available | Not enough data | Not enough data | 
| **Content** | Feature Not Available | Not enough data | Not enough data | 
| **Cart Abandonment** | Feature Not Available | Not enough data | Not enough data | 
| **Search** | Feature Not Available | Not enough data | Not enough data | 
| **Personalization Engine** | Feature Not Available | Not enough data | Not enough data | 
| **Product Recommendations** | Feature Not Available | Not enough data | Not enough data | 
| **A/B Testing** | Feature Not Available | Not enough data | Not enough data | 
| **Personalized Messaging** | Feature Not Available | Not enough data | Not enough data | 

#### Multichannel

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Web** | Feature Not Available | Not enough data | Not enough data | 
| **Email** | Feature Not Available | Not enough data | Not enough data | 
| **Mobile** | Feature Not Available | Not enough data | Not enough data | 

#### Administration 

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Marketing Campaigns** | Feature Not Available | Not enough data | Not enough data | 
| **Reports & Analytics** | Feature Not Available | Not enough data | Not enough data | 
| **User Data** | Feature Not Available | Not enough data | Not enough data | 
| **Integrations** | Feature Not Available | Not enough data | Not enough data | 

#### Agentic AI - E-Commerce Personalization

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 

### Email Template Builder

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | 7.6/10 | 18 |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Templates

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Text and Themes** | 7.7 (17 reviews) | Not enough data | Not enough data | 
| **Stock Images** | Feature Not Available | Not enough data | Not enough data | 
| **Proofing** | 8.1 (15 reviews) | Not enough data | Not enough data | 
| **Mobile Responsive** | 9.0 (14 reviews) | Not enough data | Not enough data | 

#### Edit

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Pre-Made** | 6.4 (16 reviews) | Not enough data | Not enough data | 
| **Build** | 8.0 (17 reviews) | Not enough data | Not enough data | 
| **HTML** | Feature Not Available | Not enough data | Not enough data | 

#### Logistics

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Analytics** | 5.6 (13 reviews) | Not enough data | Not enough data | 
| **Issues** | 7.8 (15 reviews) | Not enough data | Not enough data | 
| **Integrations** | 6.4 (12 reviews) | Not enough data | Not enough data | 
| **Shareable Link** | 8.3 (11 reviews) | Not enough data | Not enough data | 

#### Generative AI

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Email Template Builder

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 

### Email Testing

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | 8.8/10 | 255 |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Platform Basics

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Editing Platform** | 8.9 (213 reviews) | Not enough data | Not enough data | 
| **Spam Filter Testing** | 8.6 (202 reviews) | Not enough data | Not enough data | 
| **A/B Testing** | Feature Not Available | Not enough data | Not enough data | 
| **Deliverability Testing** | 8.9 (200 reviews) | Not enough data | Not enough data | 
| **Design Testing** | 9.3 (235 reviews) | Not enough data | Not enough data | 

#### Platform Data

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Performance** | 8.8 (205 reviews) | Not enough data | Not enough data | 
| **Dashboard** | 8.7 (215 reviews) | Not enough data | Not enough data | 
| **Analytics** | 8.6 (181 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Email Testing

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Adaptive Learning** | Feature Not Available | Not enough data | Not enough data | 
| **Proactive Assistance** | Feature Not Available | Not enough data | Not enough data | 
| **Decision Making** | Feature Not Available | Not enough data | Not enough data | 

### Email Verification

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | 6.1/10 | 6 |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Generative AI

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 6.9 (6 reviews) | Not enough data | 
| **AI Text-to-Speech** | Not enough data | 5.3 (6 reviews) | Not enough data | 

#### Agentic AI - Email Verification

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Personalization

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Agentic AI - Personalization

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Adaptive Learning** | Feature Not Available | Not enough data | Not enough data | 
| **Natural Language Interaction** | Feature Not Available | Not enough data | Not enough data | 
| **Proactive Assistance** | Feature Not Available | Not enough data | Not enough data | 
| **Decision Making** | Feature Not Available | Not enough data | Not enough data | 

### SAP Store

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Agentic AI - SAP Store

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Multi-step Planning** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Adaptive Learning** | Feature Not Available | Not enough data | Not enough data | 
| **Natural Language Interaction** | Feature Not Available | Not enough data | Not enough data | 
| **Proactive Assistance** | Feature Not Available | Not enough data | Not enough data | 
| **Decision Making** | Feature Not Available | Not enough data | Not enough data | 

### Email Tracking

| Product | Score | Reviews |
|---|---|---|
| **Litmus** | N/A | N/A |
| **Mailgun** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |

#### Agentic AI - Email Tracking

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Autonomous Task Execution** | Feature Not Available | Not enough data | Not enough data | 
| **Multi-step Planning** | Feature Not Available | Not enough data | Not enough data | 
| **Cross-system Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Adaptive Learning** | Feature Not Available | Not enough data | Not enough data | 
| **Natural Language Interaction** | Feature Not Available | Not enough data | Not enough data | 
| **Proactive Assistance** | Feature Not Available | Not enough data | Not enough data | 
| **Decision Making** | Feature Not Available | Not enough data | Not enough data | 

#### Analytics

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Open Rates** | Not enough data | Not enough data | Not enough data | 
| **Link Activity** | Feature Not Available | Not enough data | Not enough data | 
| **Attachment Activity** | Feature Not Available | Not enough data | Not enough data | 

#### Customizations

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Email Platform Integration** | Feature Not Available | Not enough data | Not enough data | 
| **Email Scheduling** | Feature Not Available | Not enough data | Not enough data | 
| **Notifications** | Feature Not Available | Not enough data | Not enough data | 
| **Email Categorization** | Feature Not Available | Not enough data | Not enough data | 
| **Templates** | Feature Not Available | Not enough data | Not enough data | 

#### Generative AI

| Feature | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (1):** [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability)

**Unique to Litmus (8):** [Email Testing Software](https://www.g2.com/categories/email-testing), [Email Tracking Software](https://www.g2.com/categories/email-tracking), [SAP Store Software](https://www.g2.com/categories/sap-store), [Email Template Builder Software](https://www.g2.com/categories/email-template-builder), [Personalization Software](https://www.g2.com/categories/personalization), [E-Commerce Personalization Software](https://www.g2.com/categories/e-commerce-personalization), [Location-Based Marketing Software](https://www.g2.com/categories/location-based-marketing), [Email Marketing Software](https://www.g2.com/categories/email-marketing)

**Unique to Mailgun (3):** [Transactional Email Software](https://www.g2.com/categories/transactional-email), [Email Verification Software](https://www.g2.com/categories/email-verification), [Email Testing Software](https://www.g2.com/categories/email-testing)

**Unique to Twilio SendGrid Email API (1):** [Transactional Email Software](https://www.g2.com/categories/transactional-email)


---
## Reviewer Demographics

### By Company Size

| Segment | Litmus | Mailgun | Twilio SendGrid Email API | 
|---|---|---|---|
| **Small-Business** | 28.4% | 80.5% | 68.3% | 
| **Mid-Market** | 42.6% | 14.3% | 25.3% | 
| **Enterprise** | 29.1% | 5.2% | 6.5% | 

### By Industry

#### Litmus

- **Marketing and Advertising:** 19.8%
- **Information Technology and Services:** 7.9%
- **Computer Software:** 6.8%
- **Financial Services:** 4.5%
- **Retail:** 4.1%
- **Hospital & Health Care:** 3.4%
- **Non-Profit Organization Management:** 3.2%
- **Higher Education:** 2.7%
- **Management Consulting:** 2.5%
- **Health, Wellness and Fitness:** 2.5%
- **Other:** 42.8%

#### Mailgun

- **Information Technology and Services:** 18.3%
- **Computer Software:** 16.3%
- **Internet:** 12.1%
- **Marketing and Advertising:** 9.2%
- **Health, Wellness and Fitness:** 2.0%
- **Education Management:** 2.0%
- **Hospital & Health Care:** 2.0%
- **Non-Profit Organization Management:** 1.6%
- **Entertainment:** 1.6%
- **Financial Services:** 1.6%
- **Other:** 33.3%

#### Twilio SendGrid Email API

- **Computer Software:** 17.7%
- **Information Technology and Services:** 13.5%
- **Marketing and Advertising:** 8.4%
- **Internet:** 7.0%
- **Financial Services:** 5.9%
- **Education Management:** 3.1%
- **Non-Profit Organization Management:** 2.5%
- **Retail:** 2.5%
- **Health, Wellness and Fitness:** 2.2%
- **Construction:** 2.2%
- **Other:** 34.8%

---
## Alternatives

### Alternatives to Litmus

- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [MailerLite](https://www.g2.com/products/mailerlite/reviews) — 4.6/5 stars (1109 reviews)
- [Constant Contact](https://www.g2.com/products/constant-contact/reviews) — 4.1/5 stars (7392 reviews)
- [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.6/5 stars (1352 reviews)
- [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) — 4.1/5 stars (722 reviews)
- [Moosend](https://www.g2.com/products/moosend/reviews) — 4.6/5 stars (740 reviews)
- [Instantly](https://www.g2.com/products/instantly/reviews) — 4.8/5 stars (4094 reviews)
- [Twilio SendGrid Email Marketing Campaigns](https://www.g2.com/products/twilio-sendgrid-email-marketing-campaigns/reviews) — 4.0/5 stars (324 reviews)
- [AWeber](https://www.g2.com/products/aweber/reviews) — 4.2/5 stars (649 reviews)

### Alternatives to Mailgun

- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [MailerLite](https://www.g2.com/products/mailerlite/reviews) — 4.6/5 stars (1109 reviews)
- [Netcore Email API](https://www.g2.com/products/netcore-email-api/reviews) — 4.4/5 stars (732 reviews)
- [SparkPost](https://www.g2.com/products/sparkpost/reviews) — 4.0/5 stars (73 reviews)
- [SMTP.com](https://www.g2.com/products/smtp-com/reviews) — 3.3/5 stars (42 reviews)
- [ActiveCampaign](https://www.g2.com/products/activecampaign/reviews) — 4.4/5 stars (14689 reviews)
- [SMTP2GO](https://www.g2.com/products/smtp2go/reviews) — 4.7/5 stars (226 reviews)
- [Elastic Email](https://www.g2.com/products/elastic-email/reviews) — 4.4/5 stars (212 reviews)
- [Amazon Simple Email Service (Amazon SES)](https://www.g2.com/products/amazon-simple-email-service-amazon-ses/reviews) — 4.3/5 stars (202 reviews)

### Alternatives to Twilio SendGrid Email API

- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [Netcore Email API](https://www.g2.com/products/netcore-email-api/reviews) — 4.4/5 stars (732 reviews)
- [SparkPost](https://www.g2.com/products/sparkpost/reviews) — 4.0/5 stars (73 reviews)
- [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (712 reviews)
- [SocketLabs](https://www.g2.com/products/socketlabs/reviews) — 4.5/5 stars (41 reviews)
- [SMTP2GO](https://www.g2.com/products/smtp2go/reviews) — 4.7/5 stars (226 reviews)
- [Elastic Email](https://www.g2.com/products/elastic-email/reviews) — 4.4/5 stars (212 reviews)
- [Amazon Simple Email Service (Amazon SES)](https://www.g2.com/products/amazon-simple-email-service-amazon-ses/reviews) — 4.3/5 stars (202 reviews)
- [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) — 4.1/5 stars (722 reviews)

---
## Top Discussions

### Litmus

- Title: [What is litmus what are its types and uses?](https://www.g2.com/discussions/what-is-litmus-what-are-its-types-and-uses) — 2 comments
  > **Top comment:** "Litmus is a tool that helps you to build email and collaborate with teamates during the process. You can preview your email in different email clients and..."
- Title: [What is Litmus used for?](https://www.g2.com/discussions/what-is-litmus-used-for) — 1 comment
  > **Top comment:** "Pre-launch visual QA of marketing emails"
- Title: [What is litmus email testing?](https://www.g2.com/discussions/what-is-litmus-email-testing) — 1 comment
  > **Top comment:** "A feature that allows you to preview your email in different email client."
- Title: [What's the benefit in running a Spam Test on Litmus?](https://www.g2.com/discussions/what-s-the-benefit-in-running-a-spam-test-on-litmus) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Did you ever spend lots of time crafting the perfect email, just to find that it got placed into your subscriber's spam folder? It's an email marketer's..."

### Mailgun

- Title: [What is Mailgun used for?](https://www.g2.com/discussions/mailgun-what-is-mailgun-used-for) — 2 comments
  > **Top comment:** "Transactional Emails."
- Title: [How much does mailgun cost?](https://www.g2.com/discussions/how-much-does-mailgun-cost) — 1 comment *(includes official response)*
  > **Top comment:** "Please visit our pricing page for detailed information. 
https://www.mailgun.com/pricing/"
- Title: [What is mailgun used for?](https://www.g2.com/discussions/what-is-mailgun-used-for) — 1 comment
  > **Top comment:** "Bulk email"
- Title: [Mailgun](https://www.g2.com/discussions/8176-mailgun) — 1 comment, 1 upvote
  > **Top comment:** "If you want to reduce the bounce rate, you need to verify the accounts in your distribution list.

If you want to know about those bounces, use the API."
- Title: [How is Mailgun priced?](https://www.g2.com/discussions/4932-pricing) — 1 comment, 1 upvote
  > **Top comment:** "They have pay as you go and fixed pricing here: https://www.mailgun.com/pricing/"

### Twilio SendGrid Email API

- Title: [What is my API Key?](https://www.g2.com/discussions/api-key-5793c785-2bfd-4896-a233-92f65c2f8462) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Your API key is the same string as the password that you use to log onto sendgrid.com. Don't forget that you can also create auxiliary sets of API..."
- Title: [Can I send from more than one domain through SendGrid?](https://www.g2.com/discussions/sending-from-multiple-domains) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Depending on your account level, this can be accomplished. If you are sending through a shared IP plan then no additional changes are required and you can..."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/litmus-vs-mailgun-vs-twilio-sendgrid-email-api)