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--- wiki:migrating_gmail_one_suite_account_another [2020/12/07 16:12] – antisa
+++ wiki:migrating_gmail_one_suite_account_another [2021/01/08 09:34] – move tips to NOTES section antisa
@@ Line 1: / Line 1: @@
-{{tag>[mail gmail migration]}}
+{{tag>mail gmail migration}}
 ====== Migrating gmail from one G suite account to another ======
@@ Line 11: / Line 11: @@
 You can’t migrate messages bigger than 25 MB.((https://support.google.com/a/answer/7032598))
 </WRAP>
-===== Set up the data migration service =====
+<WRAP important 60%>
+Migrating large mail accounts might take a lot of time. For example migration of cca. 1.5GB mail account took almost 3 days!!! But this will depend on how many attachments there are in the account, number of emails etc.
+</WRAP>
+===== NOTES: =====
+  * Enable IMAP on both the source and destination account
+  * "Folder size limits" in Gmail Settings must be set to "Do not limit the number of messages in an IMAP folder (default)". This is the default.
+  * when migrating from multiple domains you must add MX records for them
+  * on the migration assistant screen, when you are done with emails from one domain exit the Migration Assistant (**More > Exit migration**) then start the migration again for the users with new domains. If you don't do this you'll get an error "Failed estimating mailbox size".
+  * if you are transferring the same domain, make a temporary domain with mx records on the source account and move user's email to this domain. Then remove the domain from source account and add it to the destination account
+  * domain can only be removed once the user's email and email aliases are removed (**check each user > User information > Alternate email addresses (email alias)**). Remove the domain you are transferring from here.
+===== Set up the data migration service =====
       - Sign in to your Google Admin console.
@@ Line 40: / Line 53: @@
   -     Click Bulk upload with csv.
   -     Click Attach File to upload the migration CSV file containing the legacy email addresses and the new Google Workspace email addresses.
-  -     For details on how to format the file, see [[#CSV file format]] with the data migration service.
+  -     For details on how to format the file, see references below.
   -     Click Upload and Start Migration.
   -     If there are errors in your file, choose an option:
@@ Line 48: / Line 61: @@
 Tip: To exit a completed migration, click Moreand thenExit migration.
-===== CSV file format =====
-====== Tested on ======
-  *
 ====== See also ======
+[[wiki:disable_gmail_login_challenge_logging_some_user|Disable login challenge by google]]
 ====== References ======
   * https://jakebinstein.com/blog/migrate-email-from-one-g-suite-account-to-another-tutorial/
   * https://support.google.com/a/answer/9476255