Choose Mimecast if you need
- Integration with SharePoint or OneDrive. We haven't found them on Proofpoint's website.
Side by side, from each tool's own website. A tool's rating shows once it has 3 reviews.
From each tool's own website, checked on the dates below, and from published reviews.
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.

Nobody has reviewed Mimecast yet. Its rating shows once it has 3 reviews.
Review Mimecast
Nobody has reviewed Proofpoint yet. Its rating shows once it has 3 reviews.
Review ProofpointFrom the platforms and integrations each website lists.
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Mimecast and Proofpoint yet.
Your review makes this comparison better for the next person. Review Mimecast or review Proofpoint.
Mimecast: Facts from mimecast.com, checked November 14, 2026. Sources: mimecast.com, mimecast.com/products/mimecast-plans, mimecast.com/products/ai-security, mimecast.com/platform/integrations.
Proofpoint: Facts from proofpoint.com, checked November 14, 2026. Sources: proofpoint.com/us, proofpoint.com/us/products/collaboration-security-prime.
Prices change, so confirm on their sites.