SpamHero Business Email Security
SpamHero Business Email Security filters a domain’s incoming email in the cloud and forwards clean messages to the customer’s mail server.
What SpamHero Business Email Security is
SpamHero Business Email Security filters a domain’s incoming email in the cloud and forwards clean messages to the customer’s mail server. Its filtering covers spam, viruses, and malware, including Microsoft Office macros; it also offers outbound filtering and impersonation protection. A searchable quarantine lets users view and recover held messages. If a customer’s mail server is unavailable, three redundant servers in separate data centers can queue email for up to five days. SpamHero documents routing Microsoft 365 mail through its filters and connecting to Microsoft Entra ID through Microsoft Graph API to set up valid email addresses; Google Workspace is also supported. Mail-server communication uses opportunistic TLS, and SpamHero describes enforcing TLS for senders supporting MTA-STS. Its REST API uses HTTP Basic authentication and limits each key to 60 requests per minute. Support includes 24/7 chat and first-level phone support weekdays from 6am to 6pm Mountain Time. The 30-day free trial requires no payment information.
Good
- Filters spam, viruses, and malware.
- Searchable quarantine supports viewing and recovery.
- Can queue mail for up to five days during server outages.
- Offers 24/7 chat support.
Watch out
- No free plan; paid service.
- API keys are limited to 60 requests per minute.
- First-level phone support is limited to weekday hours.
Who it suits
SpamHero suits organizations seeking cloud filtering for domain email, including those using Microsoft 365 or Google Workspace. Its quarantine, mail continuity, and API may also matter to teams managing email controls and administration.
Verdict
SpamHero combines inbound filtering with quarantine, continuity, and documented integrations for Microsoft 365 and Google Workspace. Review the per-domain plan terms and support hours against your needs.
Plans and prices
From SpamHero Business Email Security's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Lite | $5 a month | 25,000 inbound emails · 50 MB inbound message limit · 7-day archive · outbound SMTP not included · $5/mo per domain, introductory rate with annual prepayment; then $7/mo, $84/yr annually or $8/mo, $96/yr monthly |
| Basic | $7 a month | 50,000 inbound emails · 100 MB inbound message limit · 15-day archive · outbound SMTP not included · $7/mo per domain, introductory rate with annual prepayment; then $9/mo, $108/yr annually or $10/mo, $120/yr monthly |
| Standard | $9 a month | 100,000 inbound emails · 200 MB inbound message limit · 5,000 outbound relays · 50 MB outbound message limit · 30-day archive · $9/mo per domain, introductory rate with annual prepayment; then $14/mo, $168/yr annually or $15/mo, $180/yr monthly |
| Enterprise | $99 a month | 200,000 inbound emails · 400 MB inbound message limit · 10,000 outbound relays · 50 MB outbound message limit · 30-day archive · unlimited quarantine users · $99/mo per domain; $99/mo, $1188/yr for first-year prepayment, annual prepayment, or monthly pricing |
The facts
Each one read from SpamHero Business Email Security's own pages, with the date it was checked.
What it does
- API
- SpamHero provides a REST API using HTTP Basic authentication and limits each API key to 60 requests per minute.checked 4 Oct 2026
- Directory integration
- SpamHero connects to Microsoft Entra ID through the Microsoft Graph API to set up valid email addresses.checked 4 Oct 2026
- Email continuity
- The FAQ says three redundant mail servers in separate data centers can queue email for up to five days if the customer’s mail server is unavailable.checked 4 Oct 2026
- Email security
- SpamHero provides opportunistic TLS encryption for mail-server communication and describes enforcing TLS for senders that support MTA-STS.checked 4 Oct 2026
- Filter rules
- The pricing page says the service uses over 22 million filter rules and tracks over 100 million senders.checked 4 Oct 2026
- GDPR
- SpamHero says it appointed EU and UK GDPR representatives and can provide a data processing addendum that includes Standard Contractual Clauses.checked 4 Oct 2026
- Microsoft 365
- SpamHero documents configuring Microsoft 365 mail flow to route messages through its filtering service.checked 4 Oct 2026
- Quarantine
- SpamHero provides a searchable quarantine with options to view and recover quarantined messages.checked 4 Oct 2026
- Service type
- SpamHero filters a domain’s incoming email in its cloud service and forwards clean mail to the customer’s mail server.checked 4 Oct 2026
- Support
- SpamHero offers 24/7 chat support and first-level phone support Monday through Friday from 6am to 6pm Mountain Time.checked 4 Oct 2026
- Threat filtering
- The plans page lists spam, virus, and malware filtering, including a Microsoft Office macro filter.checked 4 Oct 2026
The company
- Company
- SpamHero says it is a service of iSparks, inc.checked 4 Oct 2026
- Headquarters
- Pleasant Grove, Utah, USAchecked 28 Sep 2026
Money
- Trial
- The 30-day trial is free and requires no payment information to start.checked 4 Oct 2026
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