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.
Truecaller
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Spam Blocking and Caller ID
Truecaller Alternatives & Competitors (2026)
Top 2 free alternatives
Heimdal Email Security
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email Protection in a Redefined Spam Filter
0.8
Value for money
No pricing info
Starting price
0.6
Functionality
Spam Blocker
5/5
Phishing Protection
5/5
Allow/Block List
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
ContentCatcher
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based email security, phishing protection & anti-spam
0.6
Value for money
Starting price
0.4
Functionality
SURLB/URIBL Filtering
5/5
Spam Detection
5/5
Phishing Protection
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based & on-premise email protection software
0.1
Value for money
No pricing info
Starting price
Functionality
Spam Detection
5/5
Spam Blocker
5/5
Allow/Block List
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud email security, encryption, and archiving
0.8
Value for money
Starting price
0.1
Functionality
Threat Protection
5/5
Spam Blocker
5/5
Whitelisting/Blacklisting
4/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email Security — Reinvented
0.5
Value for money
Starting price
0.4
Functionality
Spam Quarantine
5/5
Threat Response
5/5
Threat Protection
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
The most effective solution when fighting phishing attacks.
Value for money
Starting price
0.6
Functionality
Anti Virus
N/A
Spam Quarantine
N/A
Email Attachment Protection
N/A
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Advanced email security and compliance for SMBs
0.1
Value for money
No pricing info
Starting price
Functionality
Compliance Management
N/A
Collaboration Tools
N/A
Reporting/Analytics
N/A
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Automated bot detection for websites and mobile apps
0.3
Value for money
Starting price
Functionality
Web-Application Security
5/5
Dashboard
5/5
API
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Network security, network monitoring & endpoint protection
0.2
Value for money
Starting price
0.2
Functionality
Virus Definition Update
5/5
Root Cause Analysis
5/5
Cloud Application Security
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Security platform for Microsoft 365 applications
0.5
Value for money
Starting price
0.5
Functionality
Vulnerability Scanning
5/5
Real-Time Monitoring
5/5
Real-Time Notifications
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based compliance management solution
0.5
Value for money
Starting price
0.1
Functionality
Vulnerability Scanning
5/5
Audit Management
5/5
Risk Assessment
4.7/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud email security & anti-spam solution
0.5
Value for money
Starting price
0.2
Functionality
Spam Detection
5/5
Spam Quarantine
4/5
Spam Blocker
4/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Advanced malware protection for small businesses.
Value for money
Starting price
0.1
Functionality
Threat Intelligence
5/5
Anomaly/Malware Detection
4.8/5
Data Security
4.8/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Anti-bot protection software to block unwanted traffic
Value for money
Starting price
0.1
Functionality
Bot Detection
5/5
Vulnerability Scanning
5/5
Web-Application Security
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email, Secured.
0.6
Value for money
Starting price
0.2
Functionality
Spam Detection
5/5
Email Attachment Protection
5/5
Reporting/Analytics
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Anti-spam filter for business email. Vital email security.
0.3
Value for money
Starting price
Functionality
Vulnerability Scanning
5/5
Security Auditing
5/5
Monitoring
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Your Managed Email Security Specialists
0.7
Value for money
Starting price
0.5
Functionality
Spam Blocker
5/5
Spam Detection
5/5
Phishing Protection
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Spam filter service for email inboxes
0.3
Value for money
Starting price
0.2
Functionality
Spam Blocker
5/5
Spam Detection
4.7/5
Spam Quarantine
4.5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud & on-premise anti spam software for businesses
0.4
Value for money
Starting price
0.2
Functionality
Spam Detection
5/5
Spam Blocker
5/5
Allow/Block List
5/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Collaborative cybersecurity based on IA, enhanced by people.
Value for money
No pricing info
Starting price
0.1
Functionality
Whitelisting/Blacklisting
5/5
Spam Analysis
5/5
Spam Detection
4.7/5
Top Features
Spam Blocker
4.8/5
Allow/Block List
4.7/5
Search/Filter
4.4/5