App comparison

Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.

Software categories Blog & research About us

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.

Learn more

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.

Learn more

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.

Learn more

Email Security Software with API (2026)

Last updated: February 2026

Key features of Email Security Software

Based on GetApp's analysis of verified user reviews collected between July 2021 and August 2024.

Email Attachment Protection: Users value encryption, customizable blocking, and sandbox features for secure and straightforward handling of sensitive attachments. 95% of reviewers rated this feature as important or highly important.
Threat Response: Reviewers appreciate the quick, automated threat detection and response, which helps reduce IT resources and increases security. 95% of reviewers rated this feature as important or highly important.
Threat Protection: Users highlight strong phishing and malware detection, which effectively prevents threats from reaching inboxes and ensures data security. 94% of reviewers rated this feature as important or highly important.
Spam Blocker: Reviewers note effective spam filtering, customizable rules, and reduced clutter, making inbox management easier and more efficient. 94% of reviewers rated this feature as important or highly important.
Encryption: Users emphasize the importance of end-to-end encryption for securing sensitive communications, with ease of use being a crucial factor. 92% of reviewers rated this feature as important or highly important.
Reporting/Analytics: Reviewers find value in detailed reports and analytics that provide insights into email threats and help inform security decisions. 81% of reviewers rated this feature as important or highly important.