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CHOOSE WITH CLARITY

The right email service.
For the way you work.

Compare the service behind your inbox, then choose the apps your team prefers. Outlook is an email app; Microsoft 365 and Exchange provide the hosted service.

Business email services · reviewed 14 November 2026
ServiceTypical fitEmail & workspaceWhat to check
SeymailsExplore SeymailsEmail with local setup and supportDomain email, webmail, calendars and contacts. Client branding and company administration are planned around your service agreement.Confirm device sync, quotas, recovery and branding in your quote.
Microsoft 365 / ExchangeOfficial plansMicrosoft productivity environmentHosted business email and calendars, with Outlook web and mobile. Desktop application entitlement depends on the selected plan.Check Basic versus Standard, app licences and Exchange requirements.
Google WorkspaceOfficial detailsGoogle collaboration environmentGmail on your domain, Google Calendar and Google's collaboration apps. Supported third-party mail clients can connect with the required authentication.Check pooled storage, edition limits and the apps your team uses.
Zoho MailOfficial editionsMail or a broader workplace suiteBusiness-domain email, shared calendars and Zoho applications. IMAP and POP access require an eligible paid plan.The free mail tier excludes IMAP, POP and ActiveSync.
FastmailOfficial detailsFocused email, calendars and contactsCustom domains and shared calendars, with third-party app access on eligible plans. Calendar and contact sync use separate supported protocols.Check the plan's app access and storage allowances.
Proton Mail for BusinessOfficial detailsPrivacy-oriented business emailCustom-domain mail and Proton Calendar. Supported third-party desktop mail apps connect through Proton Mail Bridge.Bridge is a desktop connection method; calendar interoperability is separate.

Typical fit is our editorial assessment. Features, prices and regional availability vary by edition. Follow the official links for current terms. Several providers offer company branding; compare the actual surfaces covered.

KEEP THE APP YOU KNOW

Your inbox.
Your preferred app.

Email access and full calendar or contact
synchronisation are different capabilities.

Microsoft Outlook

Compatible email access can use IMAP and SMTP. The Outlook version and any richer calendar/contact connection must be checked during onboarding.

Apple Mail

Connect mail using the supported account settings. Calendar and Contacts need their own supported sync method.

Thunderbird

Use supported IMAP and SMTP settings for email. Confirm calendar and contact requirements separately.

Gmail mobile app

A separate business account can use compatible IMAP settings in Gmail on Android, iPhone and iPad. This is separate from Gmail's web POP-fetching feature.

We confirm your actual devices and sync requirements before activation. Third-party applications keep their own interface and branding.

Google's current guidance on third-party accounts