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 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
    }
}

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 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
    }
}

• go
• gmail
• imap

1 Answer 1

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