Compare Proton Mail vs. SmarterMail in 2026

SmarterMail

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Description

Secure your company’s communications with Proton Mail — the business email solution trusted by over 50,000 organizations. With end-to-end encryption built in, your internal and external communications stay confidential by default. Proton Mail helps your business meet GDPR, HIPAA, and other compliance standards, while giving you full control over your data under strong Swiss privacy laws. Empower your team with encrypted email and calendar, support for your custom email domains, professional branding, and simple migration from providers like Google Workspace or Microsoft 365 — no IT team required.

Description

SmarterMail is the ideal Microsoft Exchange alternative. First, it's the only business email server on the market that offers native support for the protocols that power Exchange: MAPI, EWS, and EAS. It does this without the need for any additional software or plug-ins for Microsoft Outlook or other clients -- desktop and mobile! Best of all, it offers all of the features of Exchange, but at a FRACTION of the cost. In addition, features like audio and video group chat, and Online Meetings for team meetings and group collaboration are included at no extra charge. It's designed to provide the functionality businesses need, without sacrificing secure, reliable access to business, and personal, communication.

API Access

Has API No

API Access

Has API Yes

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Integrations

Microsoft Outlook Yes

All-in-One Messenger Yes

Authy Yes

Franz Yes

Gmail No

HostBill No

Mail Backup X Yes

MailArchiva No

Postbox Yes

Proton Calendar Yes

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Explore All 21 Integrations

Integrations

Microsoft Outlook Yes

All-in-One Messenger No

Authy No

Franz No

Gmail Yes

HostBill Yes

Mail Backup X No

MailArchiva Yes

Postbox No

Proton Calendar No

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Explore All 9 Integrations

Pricing Details

$6.99/user/month

Mail Business plans include an up to 13% offer:

Mail Essentials at $6.99/month/user billed annually.

Workspace Standard at $12.99/month/user billed annually.

Workspace Premium at $19.99/month/user billed annually.

Free Trial Yes

Free Version No

Pricing Details

$500.00/one-time

SmarterMail offers flexible pricing based on the needs of a business and its size. The Professional Edition is ideal for a business that wants a simple, effective email collaboration platform with a powerful webmail client as well as support for email clients using IMAP and/or POP3. The Enterprise Edition offers full desktop and mobile synchronization via EAS, EWS and MAPI support for Microsoft Exchange level integration and collaboration. In addition, SmarterMail Enterprise offers archiving, failover and much more.

Free Trial Yes

Free Version Yes