N‑able Mail Assure vs Microsoft 365 Comparison (2026)

Compare N‑able Mail Assure vs Microsoft 365 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.	Microsoft 365
N‑able Mail Assure "Email protection to help you secure and scale" Website	vs.	Microsoft 365 "Grow your business with Microsoft 365" Website
Requires you to talk to a sales team	Pricing	$72/yr
Requires 3rd party	Storage	1000 GB pooled
Depends on inbound/outbound (e.g. 10 MB)	Attachments	150 MB
No	Open-Source	No
No	Sandboxed Encryption	No
No	Unlimited Domains	No
No	Unlimited Aliases	No
No	TTI	No
❌ Requires 3rd party	SMTP	Yes
❌ Requires 3rd party	IMAP	Yes
❌ Requires 3rd party	POP3	Yes
Yes	API	No
No	E2EE	No
No	OpenPGP	⚠️ Microsoft 365 does not support PGP/MIME
No	WKD	No