Tessian vs Mimecast

Mimecast and Tessian are both enterprise email gateway solutions. Mimecast cloud email security platform with threat protection, archiving, and continuity, while Tessian human layer security platform preventing inbound threats and outbound misdirected emails. The best choice depends on your organization's size, technical requirements, and budget.

Choose Mimecast if email continuity keeps mail flowing during outages — unique differentiator is your priority and mid-to-large enterprises wanting a unified email security, archiving, and continuity platform with strong API integrations. Choose Tessian if unique misdirected email prevention addresses a gap no other tool covers well matters most and organizations concerned about both inbound email threats and accidental data loss from misdirected emails and human error.

Mimecast starts at Custom pricing / per-user licensing (per-user subscription). Tessian starts at Custom pricing / per-user licensing (per-user subscription). As always, the sticker price only tells part of the story. Factor in add-ons, implementation costs, and what's actually included at each tier.

It depends on how deeply Tessian is embedded in your stack. Most teams run both in parallel for a few weeks before cutting over. Check whether Mimecast supports importing your existing configs or policies. That's usually the biggest time sink.