# Stalwart Software Pricing, Alternatives & More 2026 | Capterra > With the help of Capterra, learn about Stalwart Software - reviews, pricing plans, popular comparisons to other Email Security products and more. Source: https://www.capterra.com/p/10034115/Stalwart --- # Stalwart Software Review 2026: Features, Reviews, Integrations, Pros & Cons Last updated on March 13, 2026 Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. Independent research methodology Capterra’s 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. 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[Learn more](https://www.capterra.com/resources/how-we-ensure-transparency/) [Description](#description)[Use cases](#use-cases)[Alternatives](#alternatives)[Features](#features)[Pricing](#pricing)[Support](#support) Stalwart ## What is Stalwart? Stalwart Mail & Collaboration Server is an open-source email and collaboration platform that integrates JMAP, IMAP4, POP3, SMTP, and WebDAV support in a unified system. The server includes built-in spam filtering, phishing protection, encryption capabilities, and collaboration tools for calendars, contacts, and file storage. Stalwart incorporates security measures like encryption-at-rest, transport security through DANE and MTA-STS, and granular access controls. The platform features scalability with load balancing, fault tolerance, and node auto discovery, which eliminates the need for complex coordinators or proxies. Stalwart streamlines email infrastructure by combining multiple components into a single binary with unified configuration, supporting multilingual search across seventeen languages and offering various storage and authentication backend options. ## What is Stalwart used for? [Email Security](https://www.capterra.com/email-security-software/) Top alternative Featured Overall rating Based on 0 user reviews Reviews sentiment Positive \- Neutral \- Negative \- Starting price $2.4 Per User, Per Year Free trial available Capterra Shortlist charts the highest-rated and most popular products... Our "Best of" badge program showcases products with the highest ratings... Our "Best of" badge program showcases products with the highest ratings... Do you work for Stalwart?[Manage this product listing](https://digitalmarkets.gartner.com/get-listed/claim-bx?url=https://stalw.art&name=Stalwart) ## Compare with a popular alternative Capterra selects software alternatives based on relevant features, verified user reviews and user interactions. Placement may be influenced by client status. ### Stalwart 0.0 VS. [4.9 (338)](https://www.capterra.com/p/233248/Hoxhunt/reviews/) Starting Price $2.4 Per User, Per Year Starting Price Contact vendor Free Trial Free Version Pricing Options Free Trial Free Version Ease Of Use 0.0 (0) Ease Of Use 4.9 (338) Value For Money 0.0 (0) Value For Money 4.8 (150) Customer Service 0.0 (0) Customer Service 4.8 (181) ## Stalwart alternatives [4.5 (39)](https://www.capterra.com/p/227959/Virtru/reviews/) Starting price $119.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 95% of reviewers rated it above 4 stars [4.9 (50)](https://www.capterra.com/p/206740/Libraesva-Email-Security/reviews/) Starting price $5.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 100% of reviewers rated it above 4 stars [4.2 (753)](https://www.capterra.com/p/204113/SendGrid/reviews/) Starting price $15.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 82% of reviewers rated it above 4 stars [Microsoft Defender for Office 365](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) [4.6 (237)](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/reviews/) Starting price Contact vendor for pricing Pricing Options Free Trial Free Version User Rating 94% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) ## Features Features with the highest number of reviews are displayed first. Those that have no reviews appear next, sorted alphabetically. Activity Dashboard Dashboard to view the status of ongoing processes, identify current incidents and track past activities AI/Machine Learning Software program that continuously adjusts its behavior based on observed data Alerts/Escalation System alerts about the need to escalate an issue or request Anomaly/Malware Detection Automatically identify and flag unusual behaviors and malicious software API Application programming interface that allows for integration with other systems/databases Audit Trail A record of all activities within the system, including user access, changes made, etc. Stalwart 23 features Dashboard to view the status of ongoing processes, identify current incidents and track past activities Software program that continuously adjusts its behavior based on observed data System alerts about the need to escalate an issue or request Automatically identify and flag unusual behaviors and malicious software Application programming interface that allows for integration with other systems/databases A record of all activities within the system, including user access, changes made, etc. Provides protection against malicious attachments. Use filters to process, organize and categorize emails to identify spam, malware and other unwanted messages Convert data into a code for security Identify phishing emails Active monitoring of systems, applications, or networks View and track pertinent metrics to find patterns and gain insights from data Set a time to generate routine reports automatically Systematic evaluation of the security of a company's overall security system and situation Analysis and detection of spam-related traffic Filters used to determine different types of malware threats Feature in email systems that identifies suspicious or unsolicited emails and holds them in a separate folder for review or deletion Rejecting phishing emails that include suspicious URLs or links to websites that have been previously flagged. Set up connections to third-party platforms to improve business processes Protect incoming and outgoing communications against malware, spam, display spoofing, and other threats Identifying, analyzing, and mitigating security issues and taking appropriate action to protect systems and data from potential harm Extra layer of security that requires not only a password and username but also something specific to that user Control system access and/or deliverability for applications and email addresses ## Pricing Free Trial Free Version Enterprise Edition $2.40 Per User,Per Year It includes: - AI-Powered Sieve Scripts - Enhanced Telemetry - Multi-Tenancy - Branding Options - Premium Support ## Support, customer service and training options Support - Email/Help Desk - FAQs/Forum - Knowledge Base - Phone Support - 24/7 (Live rep) - Chat Training - In Person - Live Online - Webinars - Documentation - Videos Deployment - Web - Android - iPhone/iPad Typical users - Freelancers - Small businesses - Mid size businesses - Enterprises ## Top-rated software of 2026 ### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox. Independent research methodology Capterra's 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](https://www.capterra.com/resources/proprietary-data-research/) How Capterra verifies reviews Capterra carefully verified over 2.5 million+ reviews to bring you authentic software experiences from real users. 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](https://www.capterra.com/resources/how-we-verify-reviews/) How Capterra ensures transparency Capterra lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. Capterra 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](https://www.capterra.com/resources/how-we-ensure-transparency/)