App comparison
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Postmark
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based email management software
Postmark Alternatives & Competitors (2026)
Top 10 free alternatives
SendGrid
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Delivers reliable email at scale for businesses
0.7
Value for money
Starting price
0.6
Functionality
Disposable Email Detection
5/5
Threat Protection
5/5
Single Email Verification
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Mailgun
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Transactional email API service for developers
0.6
Value for money
Starting price
0.5
Functionality
Bulk Email Verification
5/5
Simple Mail Transfer Protocol (SMTP)
4.7/5
API
4.7/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
InboxAlly
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
InboxAlly is the Ultimate Email Deliverability Tool!
0.1
Value for money
Starting price
0.1
Functionality
Email Tracking
4.5/5
Engagement Tracking
4/5
Email Monitoring
4/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
HubSpot Sales Hub
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Freemium email productivity & tracking for sales teams
0.5
Value for money
Starting price
0.3
Functionality
Reminders
5/5
For Startups
5/5
Opportunity Management
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Perfect Doc Studio
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Customer Communication Made Simple with AI
0.3
Value for money
No pricing info
Starting price
0.3
Functionality
Third-Party Integrations
5/5
Template Management
5/5
Multi-Language
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Automation, marketing & transactional email, and SMS service
0.2
Value for money
Starting price
0.2
Functionality
Meeting Management
5/5
Real-Time Data
5/5
Tagging
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Predictive email intelligence solution with analytics
1.0
Value for money
Starting price
0.9
Functionality
Spam Detection
5/5
Bulk Email Verification
5/5
Response Management
4/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Advanced email marketing made easy.
Value for money
Starting price
0.2
Functionality
Search Marketing
5/5
Activity Tracking
5/5
Real-Time Data
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Kartra, the all-in-one business platform
0.4
Value for money
Starting price
0.3
Functionality
Lead Generation
5/5
Form Builder
5/5
Event Triggered Actions
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Application management solution for MS 365 services
0.7
Value for money
Starting price
0.2
Functionality
Shared Inboxes
N/A
Whitelisting/Blacklisting
N/A
Archiving & Retention
N/A
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email marketing and marketing automation tool
0.2
Value for money
Starting price
0.1
Functionality
Campaign Analytics
N/A
Customer Surveys
N/A
Campaign Scheduling
N/A
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Marketing & transactional email delivery platform
0.1
Value for money
Starting price
0.2
Functionality
Archiving & Retention
N/A
Whitelisting/Blacklisting
N/A
Subscription Management
N/A
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Marketing automation platform for mid-market companies
Value for money
Starting price
0.1
Functionality
Multi-Campaign
N/A
Monitoring
N/A
Conversion Rate Optimization
N/A
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based & on-premise email protection software
0.6
Value for money
No pricing info
Starting price
0.3
Functionality
Spam Detection
5/5
Spam Blocker
5/5
Allow/Block List
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Send your newsletters with rapidmail newsletter software
0.1
Value for money
Starting price
0.1
Functionality
WYSIWYG Editor
5/5
Template Management
5/5
Reporting/Analytics
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Emails | Popups | Automations
Value for money
Starting price
0.2
Functionality
Autoresponders
5/5
Reporting/Analytics
5/5
Real-Time Notifications
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based platform for mailbox management
0.1
Value for money
Starting price
0.3
Functionality
Inbox Management
5/5
Response Management
5/5
Email Distribution
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Unified communications & transactional emails
0.8
Value for money
Starting price
0.9
Functionality
Shortcodes
1/5
Scheduled Messaging
1/5
MMS
1/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
The engine of growth. An all in one solution for user data.
0.1
Value for money
No pricing info
Starting price
0.3
Functionality
Lead Management
5/5
Calendar/Reminder System
5/5
Email Marketing
5/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Send cold emails, book meetings everyday!
0.3
Value for money
Starting price
0.4
Functionality
Third-Party Integrations
5/5
Performance Management
4.8/5
For Sales Teams/Organizations
4.6/5
Top Features
Email Distribution
5/5
Spam Blocker
5/5
Email Tracking
5/5