App comparison
Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.
GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.
Our commitment
Independent research methodology
Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.
Verified user reviews
GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.
Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.
How GetApp ensures transparency
GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.
Postman SMTP
5
2
4
1
3
0
2
0
1
0
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Making Email Deliverability for WordPress.
Last updated: September 2026
Postman SMTP Alternatives & Competitors (2026)
Top 10 free alternatives
Omnisend
Drives ecommerce sales with email marketing, SMS, and popups
0.2
Value for money
Starting price
No pricing info
0.2
Functionality
A/B Testing
4.4/5
API
4.3/5
Automated Responses
4/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
Mailjet
Marketing Email, Transactional Email, Transactional SMS
0.1
Value for money
Starting price
No pricing info
0.1
Functionality
Alerts/Notifications
5/5
Archiving & Retention
4.7/5
API
4.4/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
Constant Contact
Cloud-based email & multi-channel marketing for SMBs
0.2
Value for money
Starting price
No pricing info
0.1
Functionality
Attendance Management
5/5
Alerts/Notifications
4.7/5
Automated Publishing
4.7/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
Mailgun
Transactional email API service for developers
0.2
Value for money
Starting price
No pricing info
0.1
Functionality
Bulk Email Verification
5/5
Click Tracking
5/5
API
4.6/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
SendGrid
Delivers reliable email at scale for businesses
0.3
Value for money
Starting price
No pricing info
0.2
Functionality
API
4.6/5
Campaign Scheduling
4.5/5
CAN-SPAM Compliance
4.2/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.2
Value for money
Starting price
No pricing info
0.2
Functionality
Autoresponders
4.8/5
Activity Dashboard
4.8/5
Alerts/Notifications
4.7/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.2
Value for money
Starting price
No pricing info
0.2
Functionality
Activity Dashboard
4.7/5
Autoresponders
4.5/5
Alerts/Notifications
4.4/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.3
Value for money
Starting price
No pricing info
0.1
Functionality
Access Controls/Permissions
5/5
Activity Tracking
4.8/5
A/B Testing
4.3/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.1
Value for money
Starting price
No pricing info
0.1
Functionality
Alerts/Notifications
4.5/5
API
4.4/5
Activity Dashboard
4.3/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.4
Value for money
Starting price
No pricing info
0.4
Functionality
API
5/5
Drip Campaigns
5/5
Campaign Management
4.8/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.4
Value for money
Starting price
No pricing info
0.3
Functionality
Activity Tracking
5/5
Audit Trail
5/5
Activity Dashboard
4.8/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.4
Value for money
Starting price
No pricing info
0.2
Functionality
A/B Testing
5/5
Autoresponders
5/5
Campaign Management
4.7/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.3
Value for money
Starting price
No pricing info
Functionality
List Management
4.6/5
ROI Tracking
4.6/5
Email Campaign Management
4.5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.3
Value for money
Starting price
No pricing info
0.1
Functionality
Campaign Scheduling
5/5
Click Tracking
5/5
Campaign Management
4.8/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.4
Value for money
Starting price
No pricing info
0.2
Functionality
Click Tracking
5/5
API
4.7/5
Autoresponders
4.5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
Value for money
Starting price
No pricing info
0.1
Functionality
Click Tracking
5/5
API
4.4/5
Contact Database
4/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.3
Value for money
Starting price
No pricing info
0.3
Functionality
API
5/5
Campaign Analytics
5/5
Autoresponders
4.5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.5
Value for money
Starting price
No pricing info
0.1
Functionality
Campaign Analytics
5/5
CAN-SPAM Compliance
4.8/5
Autoresponders
4.5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.3
Value for money
No pricing info
Starting price
No pricing info
0.2
Functionality
Autoresponders
5/5
CAN-SPAM Compliance
5/5
Click Tracking
5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
0.7
Value for money
Starting price
No pricing info
0.6
Functionality
Activity Dashboard
5/5
API
5/5
Click Tracking
5/5
Top Features
Autoresponders
4.7/5
Event Triggered Actions
4.7/5
Simple Mail Transfer Protocol (SMTP)
4.7/5