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SPECIFICTION
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MailStore Server vs Microsoft Exchange Online

MailStore Server

mailstore.com

Microsoft Exchange Online

microsoft.com

Side by side

FigureMailStore ServerMicrosoft Exchange Online
Price from—$0.33/mo
Free plan——
Free trialYes—
Open source——
WebYesYes
WindowsYesYes
macOS—Yes
iOS—Yes
Android—Yes
APIYes—
Self-hostedYes—
Plans published14
Spec score · Enterprise Information Archiving Software8.3 (#2)7.8 (#7)
ComplianceThe product includes retention policies, legal hold, logging, auditor access, journaling, and eDiscovery support.Exchange Online supports litigation holds, inactive mailboxes, data loss prevention, auditing, retention policies, and message encryption.
Founded20061975
HeadquartersViersen, GermanyRedmond, Washington, United States
PurposeMailStore Server creates copies of company emails in a central archive for long-term availability and access.Exchange Online is hosted email for business, with email, calendar, and contacts accessible across major browsers and devices.
SupportStandard Update & Support includes email technical support and updates; Premium additionally includes phone support and prioritized inquiry handling within a maximum of 24 hours on working days.The Exchange Online product page states that IT-level phone support is available 24 hours a day, 7 days a week.

Plans

MailStore Server

  • MailStore Server Starter Kit (up to 5 users)$259, paid once

MailStore Server pricing →

Microsoft Exchange Online

  • Exchange Online (Plan 1)Priced on request
  • Exchange Online (Plan 2)Priced on request
  • Exchange Online (Plan 1)$4 a year
  • Exchange Online (Plan 2)$8 a year

Microsoft Exchange Online pricing →

In their own words

MailStore Server

MailStore Server has no write-up on Specifiction yet; its figures are above.

Visit mailstore.com

Microsoft Exchange Online

Microsoft Exchange Online has no write-up on Specifiction yet; its figures are above.

Visit microsoft.com