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.

Retarus
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Your Communications Need More Than Just the Best
Retarus Alternatives & Competitors (2026)
Top 5 free alternatives

Ultatel Cloud Business Phone System
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
ULTATEL | Phone and Teleommunication Solutions For Business


0.2
Value for money
Starting price
No pricing info
0.4
Functionality
Voicemail Transcription
5/5
Access Controls/Permissions
5/5
Call Screening
5/5
Top Features
Status Tracking
N/A
Whitelisting/Blacklisting
N/A
Autoresponders
N/A

InboxAlly
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
InboxAlly is the Ultimate Email Deliverability Tool!


0.2
Value for money
Starting price
No pricing info
0.2
Functionality
Email Tracking
4.7/5
Activity Dashboard
4/5
Engagement Tracking
4/5
Top Features
SMS Marketing
N/A
Scheduled Messaging
N/A
HIPAA Compliant
N/A

Perfect Doc Studio
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Customer Communication Made Simple with AI


Value for money
No pricing info
Starting price
No pricing info
Functionality
Third-Party Integrations
5/5
Template Management
5/5
Multi-Language
5/5
Top Features
Whitelisting/Blacklisting
N/A
Real-Time Data
N/A
Real-Time Monitoring
N/A

EasyDMARC
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email security and deliverability platform


0.2
Value for money
Starting price
No pricing info
0.4
Functionality
Phishing Protection
5/5
Policy Management
4.8/5
Whitelisting/Blacklisting
4.8/5
Top Features
Secure Data Storage
N/A
Real-Time Data
N/A
File Transfer
N/A

Business Systems Integrators
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Electronic Data Interchange (EDI) & supply chain automation


0.7
Value for money
Starting price
No pricing info
1.0
Functionality
Order Entry
N/A
AS2 Capability
N/A
Data Mapping
N/A
Top Features
SMS Messaging
N/A
Secure Data Storage
N/A
Print Management
N/A


1.0
Value for money
Starting price
No pricing info
0.6
Functionality
Database Support
5/5
User Interface
5/5
Iteration Management
5/5
Top Features
SMS Marketing
N/A
Scheduled Messaging
N/A
HIPAA Compliant
N/A


0.2
Value for money
Starting price
No pricing info
0.2
Functionality
API
5/5
Push Notifications
5/5
Mobile Access
5/5
Top Features
Real-Time Monitoring
N/A
Secure Data Storage
N/A
Shortcodes
N/A


1.0
Value for money
Starting price
No pricing info
0.9
Functionality
SMS Messaging
5/5
Customer Engagement
5/5
Chat/Messaging
5/5
Top Features
Secure Data Storage
N/A
SSL Security
N/A
Status Tracking
N/A


0.5
Value for money
Starting price
No pricing info
0.4
Functionality
Campaign Scheduling
5/5
Role-Based Permissions
5/5
Email Management
5/5
Top Features
Secure Data Storage
N/A
SMS Marketing
N/A
SSL Security
N/A


0.7
Value for money
Starting price
No pricing info
0.9
Functionality
Real-Time Notifications
5/5
Lead Management
5/5
Third-Party Integrations
5/5
Top Features
Status Tracking
N/A
Whitelisting/Blacklisting
N/A
Autoresponders
N/A


0.6
Value for money
Starting price
No pricing info
0.6
Functionality
Remote Access/Control
5/5
Document Storage
5/5
Private Chat
5/5
Top Features
SSL Security
N/A
Print Management
N/A
Real-Time Data
N/A


1.0
Value for money
Starting price
No pricing info
1.0
Functionality
Screen Sharing
5/5
Real-Time Chat
5/5
Mobile Access
5/5
Top Features
Shortcodes
N/A
Reporting/Analytics
N/A
Monitoring
N/A


0.8
Value for money
Starting price
No pricing info
0.7
Functionality
Mass Notifications
5/5
Secure Data Storage
5/5
Reporting & Statistics
5/5
Top Features
SSL Security
N/A
Status Tracking
N/A
Whitelisting/Blacklisting
N/A


0.9
Value for money
Starting price
No pricing info
0.8
Functionality
Automated Responses
5/5
Contact Management
4/5
Compliance Management
4/5
Top Features
Real-Time Monitoring
N/A
Reporting & Statistics
N/A
Secure Data Storage
N/A


0.6
Value for money
Starting price
No pricing info
0.8
Functionality
API
4/5
Contextual Targeting
3/5
Social Media Integration
2/5
Top Features
Third-Party Integrations
N/A
Monitoring
N/A
Multiple Format Support
N/A


0.4
Value for money
Starting price
No pricing info
0.5
Functionality
Customizable Branding
N/A
Template Management
N/A
CAN-SPAM Compliance
N/A
Top Features
SMS Marketing
N/A
Scheduled Messaging
N/A
Monitoring
N/A


0.8
Value for money
No pricing info
Starting price
No pricing info
0.4
Functionality
Activity Dashboard
5/5
Trend Analysis
5/5
Transcripts/Chat History
5/5
Top Features
Shortcodes
N/A
SMS Marketing
N/A
Status Tracking
N/A


0.4
Value for money
Starting price
No pricing info
0.5
Functionality
Third-Party Integrations
4.5/5
Multiple Format Support
4.5/5
Exceptions Management
4.5/5
Top Features
SSL Security
N/A
Print Management
N/A
Real-Time Data
N/A


0.6
Value for money
Starting price
No pricing info
0.5
Functionality
SMS Messaging
5/5
Real-time Conversations
5/5
One-to-One Messaging
5/5
Top Features
Real-Time Monitoring
N/A
Secure Data Storage
N/A
Shortcodes
N/A


1.0
Value for money
Starting price
No pricing info
Functionality
Customizable Templates
N/A
Message Personalization
N/A
Contact Management
N/A
Top Features
Real-Time Data
N/A
Real-Time Monitoring
N/A
Reporting & Statistics
N/A
