Possible options for large number of user accounts

This page summarizes the projects mentioned and recommended in the original post on /r/gsuitelegacymigration

InfluxDB - Power Real-Time Data Analytics at Scale
Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
www.influxdata.com
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SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives
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  • ImapSync

    Imapsync is an IMAP transfers tool. The purpose of imapsync is to migrate IMAP accounts or to backup IMAP accounts. IMAP is one of the three current standard protocols to access mailboxes, the two others are POP3 and HTTP with webmails, webmails are often tied to an IMAP server. Upstream website is

    For the migration of old emails, Mailcheap has a (couple of options)[https://www.mailcheap.co/help/nms/migration/] or you could use (imapsync)[https://imapsync.lamiral.info/] with any of them. I just don't know what's the best approach to do a batch transfer for thousands of users, and you also need to consider calendar and contacts.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

    InfluxDB logo
  • groupoffice

    Group Office groupware and CRM

    In terms of running your own server with Activesync; obviously there is Microsoft Exchange, possibly Open-Xchange too (it isn't free), but you could deploy your own Zimbra server (a few options, they have open source but you need a bolt on for ActiveSync) or there is Group Office, which is open source and supports ActiveSync: https://www.group-office.com/

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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