N‑able Mail Assure vs Mimecast Comparison (2026)

Compare N‑able Mail Assure vs Mimecast email services. In-depth analysis of features, pricing, security, privacy, and storage to find the best email provider for your needs.

Written by

Forward Email Team

Published

4/1/26

Time to read

Less than 5 minutes

We recommend Forward Email as the best alternative to N‑able Mail Assure. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison

N‑able Mail Assure	vs.	Mimecast
N‑able Mail Assure "Email protection to help you secure and scale" Website	vs.	Mimecast "Email & Collaboration Security" Website
Requires you to talk to a sales team	Pricing	See Mimecast plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month)
Requires 3rd party	Storage	Unknown
Depends on inbound/outbound (e.g. 10 MB)	Attachments	200 MB
No	Open-Source	No
No	Sandboxed Encryption	No
No	Unlimited Domains	No
No	Unlimited Aliases	No
No	TTI	No
❌ Requires 3rd party	SMTP	❌ Requires 3rd party
❌ Requires 3rd party	IMAP	❌ Requires 3rd party
❌ Requires 3rd party	POP3	❌ Requires 3rd party
Yes	API	Yes
No	E2EE	No
No	OpenPGP	No
No	WKD	No