Sort IMAP email uids based on data Golang

Question

I am using this IMAP Golang package to fetch recent emails from my gmail. I would like to only get the 50 most recent messages. My current approach is fetching every single email uid. I am using imap.gmail.com is there anyway to get the most recent messages, or the 50 highest UID's?

func getCode(findEmail string) (string, error) {
    uids, err := im.GetUIDs("1:*")
    if err != nil {
        imapLock.RUnlock()
        return "", err
    }

    if len(uids) > 50 {
        uids = uids[len(uids)-50:]
    }

    emails, err := im.GetEmails(uids...)
    if err != nil {
        return "", err
    }

    for _, email := range emails {
        // do something
    }
}

Julia Carmack · Accepted Answer · 2025-02-21 12:15:33Z

2

Modify your UID fetch range to "*" or use SORT if supported:

uids, err := im.GetUIDs("50:*") // Fetch last 50 UIDs

or

uids, err := im.GetSortedUIDs("REVERSE DATE", 50) // If sorting is supported

answered Feb 21 at 12:15

Julia Carmack

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1 Comment

Ahmed Zaidan Feb 22 at 3:53

Using the first route with the command im.GetUIDs("50:*") does not get the last 50 email uids. Instead this command gets all uids without the first 50. First 50 being the 50 oldest. And the Go package doesn't have im.GetSortedUIDs

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