Based on 2556 and 148 real audits
| Metric | Microsoft | Mimecast | Winner |
|---|---|---|---|
| Performance | 40 | 38 | Microsoft |
| Accessibility | 89 | 89 | Tie |
| Best Practices | 86 | 87 | Mimecast |
| SEO | 89 | 86 | Microsoft |
| Security | 67 | 66 | Microsoft |
| TTFB | 336ms | 263ms | Mimecast |
| Composite | 73 | 73 | Tie |
Microsoft outperforms Mimecast in 3 of 7 categories, with a stronger composite score (73 vs 73). Mimecast leads in best practices, TTFB.
Choose Microsoft when your primary concern is SEO and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Mimecast when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 2556 audited Microsoft sites and 148 audited Mimecast sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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