Alternatives
Best Mimecast alternatives in 2026
Data compiled by Toolradar Updated How we rate
Cite this list: Toolradar, best Mimecast alternatives 2026, toolradar.com/alternatives/mimecast
11 direct alternatives to Mimecast, compared on pricing, features, and best-for use cases. Pick the right replacement without the marketing fluff.
Quick answer
- Datadog is the top alternative to Mimecast on our list, followed by Duo Security and Sift.
- 8 of the 11 alternatives have a free plan, starting with Datadog.
- Highest rated: Tailscale, 4.8 out of 5 from 38 ratings, Sep 2026.
- 11 alternatives
- 8 with a free plan
Top 3 alternatives to Mimecast
Datadog
#1 Top pickCloud monitoring, security, and AI investigations for DevOps
Starting price
From $18 /mo
Cheapest paid plan, monthly, as of November 2026
4.4 /5 on G2 · 726 ratings, Aug 2026
Our take
Best overall
Duo Security
#2Multi-factor authentication for enterprises
Starting price
From $3 /mo
Cheapest paid plan, monthly, as of November 2026
4.6 /5 across G2 and Capterra · 1,051 ratings, Sep 2026
Sift
#3Stop fraud fast and grow revenue faster with AI-powered digital trust and safety solutions.
Starting price
From $500 /mo
Cheapest paid plan, monthly, as of November 2026
4.6 /5 on G2 · 610 ratings, Sep 2026
Mimecast vs 11 alternatives
| Tool | Starting price (Nov 2026) | Free plan | Rating |
|---|---|---|---|
 | Price: Not published | Free plan: No | 4.4 out of 5, from 440 ratings across G2 and Capterra (440) |
| Price: $18/mo | Free plan: Yes | 4.4 out of 5, from 726 ratings on G2 (726) |
| Price: $3/mo | Free plan: Yes | 4.6 out of 5, from 1,051 ratings across G2 and Capterra (1,051) |
| Price: $500/mo | Free plan: No | 4.6 out of 5, from 610 ratings on G2 (610) |
 | Price: $25/mo | Free plan: Yes | 4.3 out of 5, from 79 ratings on PeerSpot (79) |
| Price: $2.5/mo | Free plan: No | 4.2 out of 5, from 95 ratings across G2 and Capterra (95) | |
 | Price: Contact sales | Free plan: No | 4.3 out of 5, from 179 ratings on G2 (179) |
 | Price: $5/mo | Free plan: Yes | 4.6 out of 5, from 82 ratings on G2 (82) |
 | Price: $8/mo | Free plan: Yes | 4.8 out of 5, from 38 ratings across G2 and Capterra (38) |
 | Price: $25/mo | Free plan: Yes | 4.7 out of 5, from 10 ratings on G2 (10) |
| Price: Free | Free plan: Yes | n/a | |
 | Price: Free | Free plan: Yes | n/a |
Why people consider alternatives to Mimecast
Mimecast provides a comprehensive human risk management platform that leverages AI to secure email and collaboration tools against advanced threats like phishing, ransomware, and business email compromise (BEC).
Teams most often switch away when one of these starts to bite:
- Pricing at scale as usage or premium tiers add up.
- Missing integrations with the rest of your stack.
- Performance or scale limits as your needs grow.
- A specific feature gap you have hit in security.
The 11 alternatives below cover the same core job (security) with different trade-offs.
Mimecast by the numbers
| Metric | Mimecast | Peer median | Position (1 is best) |
|---|---|---|---|
| Free plan | No | 55% have one | n/a |
| Listed as an alternative to | 5 tools | 2 | #56 of 182 (joint) |
| User rating | 4.4/5 (across the web, 440 ratings) | 4.5/5 | #58 of 105 (joint) tools with 20+ reviews |
Listed as an alternative to: #55 on 2026-10-16 to #56 on 2026-11-02 (rank among 182 tools, 1 is best).
Each position is counted among the tools that have data for that row, as noted under it. All Email data · How we compute this. Advertising and placement fees are not inputs to any position.
Cite this: Toolradar, “Mimecast by the numbers”, Nov 2026.
Security leaderboards from Toolradar data
Toolradar ranks Security tools on one measure at a time, only where at least 8 tools have data. As of Nov 2026.
Lowest entry price, plans with no stated unit
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 171 tools with no stated price unit, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | HashiCorp Vault | $0.50/mo, billed monthly |
| 2 | Runbox | $0.66/mo, billed yearly |
| 3 | uTerminal | $0.83/mo, billed yearly |
| 4 | Alive | $0.99/mo, billed monthly |
| 5 | Addy.io | $1/mo, billed yearly |
Lowest entry price, per-user plans
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 40 tools priced per user, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | Zoho Mail | $1/user/mo, billed monthly |
| 2 | AccessOwl | $1.50/user/mo, billed monthly |
| 3 | Corma | $3/user/mo, billed monthly |
| 3 | Duo Security | $3/user/mo, billed monthly |
| 3 | Fastmail | $3/user/mo, billed monthly |
Lowest entry price, flat team plans
Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.
Counted among 15 tools priced as a flat team plan, verified price.
| # | Tool | Entry plan |
|---|---|---|
| 1 | Hide.me | $2.50/mo flat, billed monthly |
| 2 | 1Password | $3.99/mo flat, billed monthly |
| 3 | Malwarebytes | $5/mo flat, billed yearly |
| 4 | Sentaro | $6/mo flat, billed yearly |
| 5 | Avast | $6.50/mo flat, billed yearly |
Most visited, last 30 days
Distinct visitor sessions on the tool's Toolradar page over the last 30 days, with bots excluded by our analytics. A session counts once however many times it reloads the page.
Counted among 11 tools with 50+ visits.
| # | Tool | Visits |
|---|---|---|
| 1 | Proton VPN | 1,427 visits |
| 2 | Hide.me | 834 visits |
| 3 | Windscribe VPN | 639 visits |
| 4 | Opera | 619 visits |
| 5 | ZoogVPN | 365 visits |
Most media coverage, last 30 days
Number of distinct articles published in the last 30 days by independent press, blogs and newsletters that mention the tool. A story carried by several outlets counts once; the vendor's own blog, review sites, forums and republishing sites do not count.
Counted among 33 tools mentioned in the last 30 days.
| # | Tool | Articles |
|---|---|---|
| 1 | ServiceNow | 21 articles |
| 2 | GitLab | 13 articles |
| 3 | ConnectWise | 12 articles |
| 4 | BitGo | 9 articles |
| 5 | Harmonic Security | 5 articles |
A position exists only when at least 8 tools have data for that metric. 234 of 735 Security tools have a verified price; the others publish none we could read (often "contact sales"). Advertising and placement fees are not inputs to any position. Visit counts include visits from every source. How we compute this. Cite this: Toolradar, “Security leaderboards”, Nov 2026. Data licensed CC BY 4.0. All Security statistics.
11 alternatives to Mimecast
Ranked by G2 and Capterra ratings, media mentions, and editor review, plus how directly they replace Mimecast.
- 1
Datadog
Free plan Cheaper than MimecastCloud monitoring, security, and AI investigations for DevOps
4.4 /5 on G2 · 726 ratings, Aug 2026
From $18/host/mo, billed yearly; free plan available
- 2
Duo Security
Free plan Cheaper than MimecastMulti-factor authentication for enterprises
4.6 /5 across G2 and Capterra · 1,051 ratings, Sep 2026
From $3/user/mo, billed monthly; free plan available
- 3
Sift
PaidStop fraud fast and grow revenue faster with AI-powered digital trust and safety solutions.
4.6 /5 on G2 · 610 ratings, Sep 2026
From $500/mo, billed monthly
- 4
Cloudflare
Free plan Cheaper than MimecastInternet security & performance
4.3 /5 on PeerSpot · 79 ratings, May 2026
From $25/mo, billed yearly; free plan available
- 5
Trend Micro
PaidCybersecurity solutions for enterprises
4.2 /5 across G2 and Capterra · 95 ratings, Sep 2026
From $30/year
- 6
Resolver
PaidDiscover the value of risk intelligence to build resilience and proactively manage threats.
4.3 /5 on G2 · 179 ratings, Sep 2026
Price not published
- 7
Twingate
Free plan Cheaper than MimecastZero-trust network access, better than VPN
4.6 /5 on G2 · 82 ratings, Sep 2026
From $5/user/mo, billed monthly; free plan available
- 8
Tailscale
Free plan Cheaper than MimecastSecurely connect your devices like they're on the same network, anywhere
4.8 /5 across G2 and Capterra · 38 ratings, Sep 2026
From $8/user/mo, billed monthly; free plan available
- 9
Socket
Free plan Cheaper than MimecastSecure your dependencies and ship with confidence.
4.7 /5 on G2 · 10 ratings, Sep 2026
From $25/user/mo, billed monthly; free plan available
- 10
Keycloak
100% free Cheaper than MimecastOpen-source identity and access management
Free
- 11
Authelia
100% free Cheaper than MimecastOpen-source authentication and authorization server
Free
Frequently asked questions
What is the best alternative to Mimecast?
Based on real-signal scoring (G2 and Capterra ratings, media mentions, and editorial review), the top alternatives to Mimecast are Datadog, Duo Security, Sift. Each solves the same core job with different trade-offs on pricing, features, and integrations.
Is there a free alternative to Mimecast?
Yes. Keycloak is 100% free (no paid upgrade path) (Open-source identity and access management). Freemium tools on this list offer a free tier with paid upgrades; they are not the same as fully free.
Why do people look for Mimecast alternatives?
Common reasons teams switch away from Mimecast: pricing that scales aggressively, missing integrations with the rest of their stack, performance or scale limits, or a specific feature gap in security. The alternatives on this page solve the same core problem with different trade-offs.
Side-by-side comparisons
In-depth comparison pages for Mimecast versus each alternative.
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