# Amazon Simple Notification Service (SNS), SMTP.com vs OneSignal Comparison

| | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Star Rating** | 4.3 out of 5 | 3.3 out of 5 | 4.7 out of 5 | 
| **Total Reviews** | 89 | 42 | 1,185 | 
| **Largest Market Segment** | Small-Business (44.0% of reviews) | Small-Business (64.3% of reviews) | Small-Business (64.9% of reviews) | 
| **Entry Level Price** | No pricing available | $25/month | Free | 

---
## Top Pros & Cons

### Amazon Simple Notification Service (SNS)

Pros:
- Cloud Storage (7 reviews)
- Cost Saving (6 reviews)

Cons:
- Complexity Issues (6 reviews)
- Learning Curve (5 reviews)

### SMTP.com

**Not enough data**

### OneSignal

Pros:
- Ease of Use (143 reviews)
- Notifications (114 reviews)

Cons:
- Missing Features (33 reviews)
- Learning Curve (30 reviews)

---
## Ratings Comparison
| Rating | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
  | **Meets Requirements** | 9.2 (70 reviews) | 7.3 (37 reviews) | 9.0 (645 reviews) | 
  | **Ease of Use** | 8.5 (69 reviews) | 7.3 (37 reviews) | 9.3 (1007 reviews) | 
  | **Ease of Setup** | 8.5 (34 reviews) | 6.7 (23 reviews) | 8.9 (550 reviews) | 
  | **Ease of Admin** | 8.6 (29 reviews) | 6.9 (23 reviews) | 9.0 (377 reviews) | 
  | **Quality of Support** | 8.7 (60 reviews) | 6.9 (37 reviews) | 9.0 (596 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.6 (28 reviews) | 6.2 (23 reviews) | 9.1 (353 reviews) | 
  | **Product Direction (% positive)** | 9.0 (68 reviews) | 6.6 (38 reviews) | 9.0 (625 reviews) | 

---
## Pricing

### Amazon Simple Notification Service (SNS)

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

### SMTP.com

#### Entry-Level Pricing

Plan: Essential

Price: $25 /month

Description: 50,000 emails

Key Features:
- Shared IP
- 24/7 Phone support

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

#### Free Trial

No

### OneSignal

#### Entry-Level Pricing

Plan: Free

Price: Free

Description: Start with OneSignal's Free Plan which offers powerful messaging with an easy setup.

Key Features:
- 10,000 free monthly email sends
- Unlimited mobile push sends
- In-App messaging

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

#### Free Trial

Yes

---
## Features Comparison By Category

### Marketing Automation

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | 8.5/10 | 148 |

#### Email Marketing

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Building and Personalizing Emails** | Not enough data | Not enough data | 8.6 (98 reviews) | 
| **Sending Outbound Emails** | Not enough data | Not enough data | 8.9 (96 reviews) | 
| **Manage Email Deliverability** | Not enough data | Not enough data | 8.8 (95 reviews) | 
| **Automated Email Responses** | Not enough data | Not enough data | 8.5 (90 reviews) | 

#### Online Marketing

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Landing Pages and Forms** | Not enough data | Not enough data | Feature Not Available | 
| **Dynamic Content** | Not enough data | Not enough data | 8.7 (95 reviews) | 
| **A/B Testing** | Not enough data | Not enough data | 8.6 (98 reviews) | 
| **Mobile Optimized** | Not enough data | Not enough data | 9.1 (95 reviews) | 
| **Search Tracking and Optimization** | Not enough data | Not enough data | Feature Not Available | 

#### Lead Management

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Marketing Lead Database** | Not enough data | Not enough data | Feature Not Available | 
| **Data Quality Management** | Not enough data | Not enough data | 8.5 (90 reviews) | 
| **Segmentation** | Not enough data | Not enough data | 9.2 (96 reviews) | 
| **Lead Scoring and Grading** | Not enough data | Not enough data | Feature Not Available | 
| **Lead Nurturing** | Not enough data | Not enough data | 8.7 (91 reviews) | 
| **Online Behavior Tracking** | Not enough data | Not enough data | 8.5 (92 reviews) | 
| **Automated Alerts and Tasks** | Not enough data | Not enough data | 8.7 (95 reviews) | 
| **CRM Lead Integration** | Not enough data | Not enough data | 8.4 (85 reviews) | 

#### Campaign Management

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Program Management** | Not enough data | Not enough data | Feature Not Available | 
| **Event / Webinar Marketing** | Not enough data | Not enough data | Feature Not Available | 
| **Calendaring** | Not enough data | Not enough data | Feature Not Available | 
| **Budgeting** | Not enough data | Not enough data | Feature Not Available | 

#### Social

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Social Listening** | Not enough data | Not enough data | Feature Not Available | 
| **Social Sharing** | Not enough data | Not enough data | 8.3 (88 reviews) | 
| **Social Campaigns** | Not enough data | Not enough data | Feature Not Available | 
| **Social Media Engagement** | Not enough data | Not enough data | Feature Not Available | 
| **Social Media Advertising** | Not enough data | Not enough data | Feature Not Available | 

#### Reporting & Analytics

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Basic Reporting** | Not enough data | Not enough data | 8.6 (101 reviews) | 
| **Web Analytics** | Not enough data | Not enough data | 8.5 (88 reviews) | 
| **ROI Analytics** | Not enough data | Not enough data | 8.1 (87 reviews) | 
| **Revenue Analytics** | Not enough data | Not enough data | 8.1 (85 reviews) | 
| **SEO / Keyword Analytics** | Not enough data | Not enough data | Feature Not Available | 

#### Platform

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Customization ** | Not enough data | Not enough data | 8.6 (97 reviews) | 
| **Workflow Capability** | Not enough data | Not enough data | 8.5 (91 reviews) | 
| **User, Role, and Access Management** | Not enough data | Not enough data | 8.3 (100 reviews) | 
| **Internationalization** | Not enough data | Not enough data | 8.2 (61 reviews) | 
| **Sandbox / Test Environments** | Not enough data | Not enough data | 8.2 (63 reviews) | 
| **Performance and Reliability** | Not enough data | Not enough data | 8.9 (100 reviews) | 
| **Output Document Generation** | Not enough data | Not enough data | 8.0 (85 reviews) | 

#### Agentic AI - Marketing Automation

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **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 | 
| **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 | 

#### Integration

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Data Import & Export Tools** | Not enough data | Not enough data | 8.2 (91 reviews) | 
| **Integration APIs** | Not enough data | Not enough data | 8.6 (99 reviews) | 
| **Breadth of Partner Applications** | Not enough data | Not enough data | 8.1 (89 reviews) | 

### Transactional Email

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | 6.7/10 | 17 |
| **OneSignal** | N/A | N/A |

#### Administration

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Template Creation** | Not enough data | Feature Not Available | Not enough data | 
| **Preset Template Availability** | Not enough data | Feature Not Available | Not enough data | 
| **Custom Unsubscribe** | Not enough data | 5.5 (10 reviews) | Not enough data | 
| **Email Segmentation** | Not enough data | Feature Not Available | Not enough data | 
| **Detailed Server Logs** | Not enough data | Feature Not Available | Not enough data | 
| **Notifications** | Not enough data | Feature Not Available | Not enough data | 

#### Integrations

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Webhooks** | Not enough data | Feature Not Available | Not enough data | 
| **Event Tracking API** | Not enough data | Feature Not Available | Not enough data | 
| **Mail Send API** | Not enough data | Feature Not Available | Not enough data | 
| **Spam Filter Testing** | Not enough data | Feature Not Available | Not enough data | 

#### Platform

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Custom Tracking Domain** | Not enough data | 7.1 (13 reviews) | Not enough data | 
| **Multiple Domains** | Not enough data | 7.3 (13 reviews) | Not enough data | 
| **Dedicated IP** | Not enough data | 7.3 (11 reviews) | Not enough data | 
| **Documentation** | Not enough data | 6.2 (15 reviews) | Not enough data | 
| **Sender Reputation Management** | Not enough data | 6.6 (15 reviews) | Not enough data | 
| **Tracking & Reporting** | Not enough data | 6.8 (15 reviews) | Not enough data | 
| **Enterprise Scalability** | Not enough data | 6.4 (14 reviews) | Not enough data | 
| **Performance and Reliability** | Not enough data | 6.1 (16 reviews) | Not enough data | 

### Email Deliverability

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | 7.7/10 | 21 |
| **OneSignal** | N/A | N/A |

#### Diagnosis

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **IP Address ** | Not enough data | 7.8 (20 reviews) | Not enough data | 
| **Domains** | Not enough data | 7.9 (21 reviews) | Not enough data | 
| **Content ** | Not enough data | 7.8 (20 reviews) | Not enough data | 
| **Policy Compliance** | Not enough data | 7.5 (21 reviews) | Not enough data | 

#### Tracking

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Processing Time** | Not enough data | 7.5 (21 reviews) | Not enough data | 
| **Placement ** | Not enough data | 8.0 (20 reviews) | Not enough data | 
| **Open Rate** | Not enough data | 7.3 (21 reviews) | Not enough data | 
| **Time to Open** | Not enough data | 7.4 (20 reviews) | Not enough data | 
| **Alerts** | Not enough data | 7.4 (21 reviews) | Not enough data | 

#### Reporting

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Campaign Performance** | Not enough data | 7.8 (20 reviews) | Not enough data | 
| **Domain Reputation** | Not enough data | 7.8 (20 reviews) | Not enough data | 
| **Brand Reputation** | Not enough data | 8.0 (20 reviews) | Not enough data | 
| **Blacklist and Whitelist** | Not enough data | 7.4 (20 reviews) | Not enough data | 

#### Agentic AI - Email Deliverability

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **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 | 

### Push Notification

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | 8.3/10 | 553 |

#### Campaigns

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Customize** | Not enough data | Not enough data | 8.9 (464 reviews) | 
| **Scheduling** | Not enough data | Not enough data | 9.1 (455 reviews) | 
| **Retarget** | Not enough data | Not enough data | 8.6 (410 reviews) | 
| **Segmentation** | Not enough data | Not enough data | 8.8 (460 reviews) | 
| **Triggered Notifications** | Not enough data | Not enough data | 8.8 (448 reviews) | 

#### Analytics

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Campaign Performance** | Not enough data | Not enough data | 8.5 (444 reviews) | 
| **Audience Insights** | Not enough data | Not enough data | 8.3 (438 reviews) | 

#### Optimization

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **A/B Testing** | Not enough data | Not enough data | 8.4 (386 reviews) | 
| **Personalization** | Not enough data | Not enough data | 8.6 (424 reviews) | 
| **Rich Notifications** | Not enough data | Not enough data | 8.8 (432 reviews) | 
| **Integrations** | Not enough data | Not enough data | 8.7 (424 reviews) | 

#### Agentic AI - Push Notification

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 6.8 (13 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 7.1 (13 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 6.8 (13 reviews) | 

### SMS Marketing

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | 8.8/10 | 46 |

#### Text Messaging

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Bulk SMS** | Not enough data | Not enough data | 9.1 (35 reviews) | 
| **Two-Way Text Messaging** | Not enough data | Not enough data | Feature Not Available | 
| **Text Scheduler** | Not enough data | Not enough data | 9.1 (35 reviews) | 
| **Automatic Replies** | Not enough data | Not enough data | Feature Not Available | 
| **Automatic URL Shortening** | Not enough data | Not enough data | 8.2 (33 reviews) | 
| **MMS Marketing** | Not enough data | Not enough data | 8.5 (34 reviews) | 
| **Personalization** | Not enough data | Not enough data | 8.9 (36 reviews) | 
| **Transactional SMS** | Not enough data | Not enough data | 9.1 (32 reviews) | 

#### SMS Platform

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Reporting** | Not enough data | Not enough data | 8.9 (34 reviews) | 
| **Automation** | Not enough data | Not enough data | 8.8 (34 reviews) | 
| **White Label** | Not enough data | Not enough data | Feature Not Available | 
| **Text-to-Landline** | Not enough data | Not enough data | Feature Not Available | 
| **Short Codes** | Not enough data | Not enough data | 8.5 (31 reviews) | 
| **API Integration** | Not enough data | Not enough data | 9.1 (35 reviews) | 

#### Agentic AI - SMS Marketing

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **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 | 
| **Natural Language Interaction** | 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 | 

### Proactive Notification

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | 8.6/10 | 147 |

#### Messaging Channels

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **SMS Messaging** | Not enough data | Not enough data | 8.0 (82 reviews) | 
| **Email** | Not enough data | Not enough data | 8.7 (95 reviews) | 
| **Voice Messaging** | Not enough data | Not enough data | 7.2 (70 reviews) | 
| **Two way messaging** | Not enough data | Not enough data | Feature Not Available | 

#### Administration

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Scheduling** | Not enough data | Not enough data | 9.2 (120 reviews) | 
| **Triggered Notifications** | Not enough data | Not enough data | 9.2 (123 reviews) | 
| **Segmentation** | Not enough data | Not enough data | 9.0 (124 reviews) | 
| **Integrations** | Not enough data | Not enough data | 8.9 (119 reviews) | 

### IT Alerting

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | 9.5/10 | 10 |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | N/A | N/A |

#### Generative AI

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **AI Text Generation** | 9.5 (7 reviews) | Not enough data | Not enough data | 

#### Agentic AI - IT Alerting

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **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 | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Interaction** | 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 | 

### RCS Business Messaging

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | N/A | N/A |

#### Messaging - RCS Business Messaging

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Rich Media** | Not enough data | Not enough data | Not enough data | 
| **Interactive Messages** | Not enough data | Not enough data | Not enough data | 
| **Branded Templates** | Not enough data | Not enough data | Not enough data | 
| **Automation** | Not enough data | Not enough data | Not enough data | 
| **Conversational RCS** | Not enough data | Not enough data | Not enough data | 
| **Transactional RCS** | Not enough data | Not enough data | Not enough data | 
| **Promotional RCS** | Not enough data | Not enough data | Not enough data | 

#### Security / Verification - RCS Business Messaging

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Verified Sender** | Not enough data | Not enough data | Not enough data | 
| **Encryption** | Not enough data | Not enough data | Not enough data | 
| **Authentification** | Not enough data | Not enough data | Not enough data | 

#### Analytics / Deliverability - RCS Business Messaging

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Read Receipts** | Not enough data | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 
| **SMS Fallback** | Not enough data | Not enough data | Not enough data | 

#### AI - RCS Business Messaging

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **AI** | Not enough data | Not enough data | Not enough data | 

### Mobile Marketing

| Product | Score | Reviews |
|---|---|---|
| **Amazon Simple Notification Service (SNS)** | N/A | N/A |
| **SMTP.com** | N/A | N/A |
| **OneSignal** | 8.6/10 | 223 |

#### Analysis

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Application Attribution** | Not enough data | Not enough data | 8.7 (97 reviews) | 
| **Campaign Analysis** | Not enough data | Not enough data | 8.7 (170 reviews) ✓ Verified | 
| **Uninstall Tracking** | Not enough data | Not enough data | 8.2 (142 reviews) | 
| **Custom Dashboards** | Not enough data | Not enough data | 8.3 (151 reviews) | 

#### Campaigns

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Proximity Marketing** | Not enough data | Not enough data | 8.7 (147 reviews) ✓ Verified | 
| **Push Notifications** | Not enough data | Not enough data | 9.5 (194 reviews) ✓ Verified | 
| **Bulk SMS** | Not enough data | Not enough data | 8.1 (80 reviews) | 
| **Two-Way Text Messaging** | Not enough data | Not enough data | Feature Not Available | 
| **Email Campaigns** | Not enough data | Not enough data | 8.4 (138 reviews) | 
| **Audience Segmentation** | Not enough data | Not enough data | 8.8 (181 reviews) | 

#### Engagement

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Coupons and Promotions** | Not enough data | Not enough data | 8.2 (135 reviews) | 

#### Platform

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Optimization** | Not enough data | Not enough data | 8.9 (148 reviews) | 
| **Integrations - Mobile Marketing** | Not enough data | Not enough data | 9.0 (156 reviews) ✓ Verified | 
| **Internationalization** | Not enough data | Not enough data | 8.7 (141 reviews) | 

#### Agentic AI - Mobile Marketing

| Feature | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **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 | 
| **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 | 

---
## Categories

**Unique to Amazon Simple Notification Service (SNS) (1):** [IT Alerting Software](https://www.g2.com/categories/it-alerting)

**Unique to SMTP.com (2):** [Transactional Email Software](https://www.g2.com/categories/transactional-email), [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability)

**Unique to OneSignal (6):** [Push Notification Software](https://www.g2.com/categories/push-notification), [Mobile Marketing Software](https://www.g2.com/categories/mobile-marketing), [Proactive Notification Software](https://www.g2.com/categories/proactive-notification), [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [SMS Marketing Software](https://www.g2.com/categories/sms-marketing), [ RCS Business Messaging Software](https://www.g2.com/categories/rcs-business-messaging)


---
## Reviewer Demographics

### By Company Size

| Segment | Amazon Simple Notification Service (SNS) | SMTP.com | OneSignal | 
|---|---|---|---|
| **Small-Business** | 44.0% | 64.3% | 64.9% | 
| **Mid-Market** | 29.8% | 33.3% | 28.2% | 
| **Enterprise** | 26.2% | 2.4% | 6.9% | 

### By Industry

#### Amazon Simple Notification Service (SNS)

- **Computer Software:** 15.5%
- **Information Technology and Services:** 13.1%
- **Real Estate:** 4.8%
- **Internet:** 4.8%
- **Marketing and Advertising:** 4.8%
- **Computer & Network Security:** 3.6%
- **Education Management:** 3.6%
- **Financial Services:** 3.6%
- **Hospital & Health Care:** 3.6%
- **Banking:** 2.4%
- **Other:** 40.5%

#### SMTP.com

- **Marketing and Advertising:** 23.8%
- **Information Technology and Services:** 16.7%
- **Financial Services:** 14.3%
- **Non-Profit Organization Management:** 4.8%
- **Computer Software:** 4.8%
- **Accounting:** 2.4%
- **Airlines/Aviation:** 2.4%
- **Apparel & Fashion:** 2.4%
- **Design:** 2.4%
- **Education Management:** 2.4%
- **Other:** 23.8%

#### OneSignal

- **Computer Software:** 12.9%
- **Information Technology and Services:** 10.1%
- **Financial Services:** 6.0%
- **Health, Wellness and Fitness:** 4.4%
- **Computer Games:** 3.9%
- **Online Media:** 3.9%
- **Entertainment:** 3.8%
- **Marketing and Advertising:** 3.2%
- **Consumer Services:** 2.9%
- **Education Management:** 2.7%
- **Other:** 46.3%

---
## Alternatives

### Alternatives to Amazon Simple Notification Service (SNS)

- [PagerDuty](https://www.g2.com/products/pagerduty/reviews) — 4.5/5 stars (952 reviews)
- [xMatters](https://www.g2.com/products/xmatters/reviews) — 4.5/5 stars (766 reviews)
- [Jira Service Management](https://www.g2.com/products/jira-service-management/reviews) — 4.3/5 stars (977 reviews)
- [Checkmk](https://www.g2.com/products/checkmk/reviews) — 4.7/5 stars (293 reviews)
- [Splunk On-Call](https://www.g2.com/products/splunk-on-call/reviews) — 4.5/5 stars (52 reviews)
- [Dynatrace](https://www.g2.com/products/dynatrace/reviews) — 4.5/5 stars (1363 reviews)
- [Datadog](https://www.g2.com/products/datadog/reviews) — 4.4/5 stars (705 reviews)
- [Freshstatus by Freshworks](https://www.g2.com/products/freshstatus-by-freshworks/reviews) — 4.5/5 stars (370 reviews)
- [Uptime.com](https://www.g2.com/products/uptime-com/reviews) — 4.6/5 stars (356 reviews)
- [Freshservice](https://www.g2.com/products/freshservice/reviews) — 4.6/5 stars (1335 reviews)

### Alternatives to SMTP.com

- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [Mailgun](https://www.g2.com/products/mailgun/reviews) — 4.2/5 stars (321 reviews)
- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12965 reviews)
- [Netcore Email API](https://www.g2.com/products/netcore-email-api/reviews) — 4.4/5 stars (732 reviews)
- [SMTP2GO](https://www.g2.com/products/smtp2go/reviews) — 4.7/5 stars (226 reviews)
- [Twilio SendGrid Email API](https://www.g2.com/products/twilio-sendgrid-email-api/reviews) — 4.0/5 stars (368 reviews)
- [Constant Contact](https://www.g2.com/products/constant-contact/reviews) — 4.1/5 stars (7392 reviews)
- [GetResponse](https://www.g2.com/products/getresponse/reviews) — 4.3/5 stars (1120 reviews)
- [SAP Engagement Cloud (formerly SAP Emarsys)](https://www.g2.com/products/sap-engagement-cloud-formerly-sap-emarsys/reviews) — 4.2/5 stars (624 reviews)
- [Omnisend](https://www.g2.com/products/omnisend/reviews) — 4.6/5 stars (1185 reviews)

### Alternatives to OneSignal

- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1681 reviews)
- [MoEngage](https://www.g2.com/products/moengage/reviews) — 4.5/5 stars (524 reviews)
- [Iterable](https://www.g2.com/products/iterable/reviews) — 4.4/5 stars (824 reviews)
- [Customer.io](https://www.g2.com/products/customer-io/reviews) — 4.4/5 stars (828 reviews)
- [Insider One](https://www.g2.com/products/insider-one/reviews) — 4.8/5 stars (1357 reviews)
- [CleverTap](https://www.g2.com/products/clevertap/reviews) — 4.6/5 stars (654 reviews)
- [WebEngage](https://www.g2.com/products/webengage/reviews) — 4.5/5 stars (751 reviews)
- [Pushwoosh](https://www.g2.com/products/pushwoosh/reviews) — 4.3/5 stars (48 reviews)
- [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.6/5 stars (1353 reviews)
- [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (712 reviews)

---
## Top Discussions

### Amazon Simple Notification Service (SNS)

No discussions available for this product.

### SMTP.com

- Title: [Contracts for simple plans?](https://www.g2.com/discussions/contracts-for-simple-plans) — 1 comment, 1 upvote
  > **Top comment:** "No, my understanding is you can pay monthly without any long-term contract obligations. "

### OneSignal

- Title: [What is OneSignal used for?](https://www.g2.com/discussions/what-is-onesignal-used-for) — 3 comments, 3 upvotes
  > **Top comment:** "OneSignal is a customer engagement platform primarily used for sending push notifications, email notifications, and in-app messaging. 

"
- Title: [Is One signal a good push notifications service](https://www.g2.com/discussions/is-one-signal-a-good-push-notifications-service) — 3 comments, 1 upvote
  > **Top comment:** "Yes it is"
- Title: [When will you add monitization options?](https://www.g2.com/discussions/24867-when-will-you-add-monitization-options) — 2 comments, 1 upvote
  > **Top comment:** "in my opinion and experience using one signal, you cant monetize the message itself, but you can direct your users to any monetized website and read..."
- Title: [Easy to use](https://www.g2.com/discussions/onesignal-easy-to-use) — 1 comment, 1 upvote
  > **Top comment:** "Certainly"
- Title: [How can I download a report of the goblad outcomes of my push notifications](https://www.g2.com/discussions/how-can-i-download-a-report-of-the-goblad-outcomes-of-my-push-notifications) — 1 comment, 1 upvote
  > **Top comment:** "you need to update your plan to a paid plan ... then you can export it from the page of the message, below the chart."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/amazon-simple-notification-service-sns-vs-smtp-com-vs-onesignal)