Glassbreak vs Everbridge: Mass Notification Compared
Glassbreak Team · Published 2026-07-17 · Facts checked 2026-07-17
Everbridge and Glassbreak both send emergency alerts, but at different scale: Everbridge, per its own documentation, is a population- and city-scale critical event management platform reaching hundreds of millions of people; Glassbreak combines quorum-gated access to a team's own secrets with crisis communications that scale, on the Enterprise tier, to an organization's own workforce — into the thousands of people, not Everbridge's public-population reach. Every claim about Everbridge below links to Everbridge's own public product pages, checked 2026-07-17.
What Everbridge's Critical Event Management solves
Everbridge 360 is described, per Everbridge's Critical Event Management platform page, as helping organizations "identify threats, understand who and what is affected, coordinate response, communicate with the right people, and learn from every incident." The platform's Control Center product integrates disparate physical security systems to give operational control and situational awareness across facilities, and its Risk Intelligence capability draws on thousands of data sources monitored by 80+ analysts. Everbridge's page also cites a Forrester-derived 358% ROI figure for the platform.
The reach is documented separately on Everbridge's Mass Notification product page: the platform has delivered alerts to 600 million people globally, sends more than 5 billion messages a year, and operates across 200+ countries and territories, through 25+ contact paths — SMS, email, voice, mobile push, desktop alerts, Microsoft Teams, Slack, social media, and digital signage among them. The page also documents two-way acknowledgment (recipients can confirm receipt, report status, or request assistance) and geo-targeted alerting so a notification can be scoped to only the affected population rather than broadcast everywhere.
Where the two platforms differ
Population/city-scale public alerting vs. organization-scale crisis notification. Everbridge's own numbers — 600 million people reached, 5 billion messages a year, 200+ countries — describe infrastructure built for alerting an entire city, region, or public population that never opted into a private roster. Glassbreak's Free and Team tiers scope emergency messaging to a team's own responder roster and encrypted contact catalogue; the Enterprise tier extends that to organization-wide critical-event management and mass notification for an internal workforce or membership base into the thousands of people — the job Glassbreak for Enterprise: mass notification is built for. No Glassbreak tier reaches Everbridge's population/city-scale public broadcast or its physical-security Control Center integration.
Physical security operations vs. encrypted secret access. Everbridge's Control Center, as documented, integrates physical security systems — badge readers, cameras, access control — into a single operational view. Glassbreak doesn't do physical security integration at all; instead it addresses a different emergency-access problem, quorum-gated release of encrypted digital secrets (credentials, recovery documents, keys) using Shamir's Secret Sharing, so no single administrator can unlock a secret alone — the same threshold-approval principle behind any break-glass procedure.
Risk intelligence feed vs. no equivalent. Everbridge's Risk Intelligence, per its own page, aggregates thousands of external data sources with analyst monitoring to surface threats before they reach your organization. Glassbreak has no comparable external threat-monitoring product — it starts from the point a team has already decided to respond.
Documented encryption posture. Everbridge's public pages describe delivery confirmation and 325+ security controls with flexible data residency, but don't document an end-to-end, zero-knowledge encryption model for message or secret content. Glassbreak's security page states content is AES-256-GCM encrypted on-device before transmission, with Glassbreak holding no usable decryption key — a specific, verifiable architectural claim rather than a general security-controls count.
Choose Everbridge if…
If your requirement is genuinely population- or city-scale — alerting the public, an entire municipality, or a region; coordinating physical security operations across facilities; or consuming an external risk-intelligence feed — Everbridge's documented reach and Control Center integration make it the mature, purpose-built platform, and no Glassbreak tier reaches that scope. Glassbreak's Free and Team tiers are built for a specific responder team's own encrypted secrets and quorum-gated access to them; the Enterprise tier extends that to organization-scale critical-event management and mass notification — multi-channel delivery, escalation chains, and playbooks sized to your own workforce or membership base, into the thousands of people, without Everbridge's public-population reach or physical-security integration. Some organizations run both — Everbridge (or a similar CEM platform) for public and city-scale alerting, Glassbreak for the team- or organization-level quorum secrets and internal coordination underneath it.
The comparison
| Everbridge | Glassbreak | |
|---|---|---|
| Primary job | Population/city-scale critical event management & mass notification | Team-scale quorum-gated secrets on every tier; org-scale mass notification on Enterprise |
| Documented reach | 600M people reached, 5B+ messages/year, 200+ countries | Team's own roster (Free/Team); organization workforce into the thousands (Enterprise) |
| Channels | 25+ contact paths incl. SMS, email, voice, push, desktop, Teams, Slack, social, signage | SMS, email, push, voice fallback with delivery receipts |
| Physical security integration | Control Center integrates physical security systems | Not offered |
| Risk intelligence feed | Thousands of data sources, 80+ analysts | Not offered |
| Quorum-gated encrypted secret access | Not a documented feature | Core feature — Shamir's Secret Sharing, T-of-N (T>=2) |
| Pricing | Enterprise, custom (not published) | Free / Team $15 / Business $39 / Enterprise custom, per responder |
Getting started
Glassbreak's Free plan supports one team of up to 5 members, 2 responder seats, and 10 encrypted secrets — enough to set up the quorum-gated secrets and internal call tree that sit underneath any population-scale notification tool you already use. Team ($15) and Business ($39) plans, billed per responder seat, add unlimited secrets, playbooks, and escalation rules; the Enterprise tier adds the organization-scale mass-notification and critical-event-management surface described on Glassbreak for Enterprise: mass notification — sized for your own workforce or membership base into the thousands, not Everbridge's population/city-scale public alerting. Read the full cryptographic design on the security page and the two-cloud infrastructure behind it on how it works. Paid billing is rolling out during early access — you can request early access today, and the Free plan has no time limit while you wait.
Frequently asked questions
- Is Glassbreak an Everbridge replacement?
- Not fully, though Glassbreak's Enterprise tier covers part of the same job at a smaller scale. Everbridge, per its own documentation, is built for population- and city-scale critical event management — reaching hundreds of millions of people globally, billions of messages a year, plus physical security system integration through Control Center. Glassbreak's Free and Team tiers are built for a specific responder team's crisis response and quorum-gated secrets; the Enterprise tier extends mass notification and critical-event management to an organization's own workforce or membership base, into the thousands of people. If your requirement is alerting the public, an entire city, or a population in the hundreds of millions, Everbridge's documented scale is the appropriate tool; if it's your own organization's workforce, Glassbreak's Enterprise tier is built for that narrower job.
- Does Everbridge offer quorum-gated access to encrypted secrets, like Glassbreak's break-glass model?
- Not as a documented feature of its Critical Event Management or Mass Notification products. Everbridge's public pages describe notification delivery, two-way acknowledgment, physical security coordination through Control Center, and a risk-intelligence feed — not a mechanism for splitting a secret across independent approvers so no single person, including an Everbridge administrator, can unlock it alone. That's the specific problem Glassbreak's Shamir's Secret Sharing model addresses.
- Is Glassbreak's emergency messaging the same scale as Everbridge's mass notification?
- No. Everbridge's own mass notification page cites reaching 600 million people globally and sending over 5 billion messages a year across 200+ countries. Glassbreak's emergency messaging is scoped to a team's own responder roster and contact catalogue — built for coordinating a defined crisis response, not for population-scale public alerting. Teams that need both usually keep Everbridge (or a similar CEM platform) for public/population alerting and use Glassbreak for the team-level quorum-gated secrets and internal crisis coordination underneath it.
- Does Everbridge encrypt message content end-to-end?
- Everbridge's public Critical Event Management and Mass Notification pages describe delivery confirmation, two-way acknowledgment, and 325+ security controls with flexible data residency options, but do not document an end-to-end, zero-knowledge encryption model for message content the way Glassbreak's security page does — where content is AES-256-GCM encrypted on-device before transmission and Glassbreak itself holds no usable decryption key. Teams with that specific requirement should verify Everbridge's current encryption posture directly with Everbridge.