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How to: Programmatically Search for an E-Mail Address in Contacts

This example searches a contact folder for contacts that have the domain name example.com in their e-mail addresses.

Applies to: The information in this topic applies to application-level projects for Outlook 2013 and Outlook 2010. For more information, see Features Available by Office Application and Project Type.

private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
    SearchforEmail("example.com");
}

private void SearchforEmail(string partialAddress)
{
    string contactMessage = string.Empty;
    Outlook.MAPIFolder contacts = (Outlook.MAPIFolder)
        this.Application.ActiveExplorer().Session.GetDefaultFolder
         (Outlook.OlDefaultFolders.olFolderContacts);
    foreach (Outlook.ContactItem foundContact in contacts.Items)
    {
        if (foundContact.Email1Address != null)
        {
            if (foundContact.Email1Address.Contains(partialAddress))
            {
                contactMessage = contactMessage + "New contact"
                + foundContact.FirstName + " " + foundContact.LastName
                + " Email Address is " + foundContact.Email1Address +
                ". \n";
            }
        }
    }
    if (!(contactMessage.Length > 0))
    {
        contactMessage = "No Contacts were found.";
    }
    MessageBox.Show(contactMessage);
}

This example requires:

  • Contacts that have the domain name example.com in their e-mail addresses (for example, somebody@example.com), and that have first names and last names.

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