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When importing a load of messages into Gmail they have all been marked as unread. I don't want to have to go through 15000 emails page by page to mark them as read, is there any way to do this in bulk?

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migrated from superuser.com Jul 17 '12 at 15:50

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3 Answers 3

up vote 9 down vote accepted

Search for string before:date (date in format yyyy-mm-dd) and then choose More > Select all as read.

Watch out: This will select also emails from this date! I.e. before:2012-07-12 will select email received before 12 July 2012, but also emails received on 12 July 2012.

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Awesome, this worked. Though it's "Mark all as read" under More, rather than "Select all as read". –  alnorth29 Jul 13 '12 at 11:35
@alnorth29 Sorry for the mistranslation. I'm using Polish version of GMail and I didn't know how it sounds in English. –  burtek Jul 14 '12 at 9:26

Search your email with


And then select them all and mark as read


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You could also use this Google script which automatically marks emails in any Gmail label (inbox also) as read when they become older than N days. Google script to mark old emails as read.

Please note that it is not a one time activity but rather a continuous "check and mark as read" script.

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