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https://issues.apache.org/jira/browse/EMAIL-115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218425#comment-13218425
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Brian Telintelo commented on EMAIL-115:
---------------------------------------

Yes, that is exactly what I want to do.  However, in the set method, it throws 
an exception for an empty list:

    public Email setTo(Collection aCollection) throws EmailException
    {
        if (aCollection == null || aCollection.isEmpty())
        {
            throw new EmailException("Address List provided was invalid");
        }

        this.toList = new ArrayList(aCollection);
        return this;
    }

I think the isEmpty check should be removed, or a seperate clear method added 
to reset the collection.
                
> Need a way to remove emails from an already created, but not sent message.
> --------------------------------------------------------------------------
>
>                 Key: EMAIL-115
>                 URL: https://issues.apache.org/jira/browse/EMAIL-115
>             Project: Commons Email
>          Issue Type: Improvement
>    Affects Versions: 1.2
>            Reporter: Brian Telintelo
>            Priority: Blocker
>             Fix For: 2.0
>
>
> Ok, so we have one send email method which takes 
> org.apache.commons.mail.Email param.  It then checks to see if email sending 
> is enabled(configured by server instance), then sends the mail if it is.  
> Problem happens for our QA testing.  We need to test email content, but don't 
> want to send emails to actual users in QA environment.  What we want to do is 
> modify our "one" send email method and clear out the To,CC,BCC fields and 
> then set the TO field to be our testing list.  But, there is no way to remove 
> emails already added.  Setting it to null or empty collection results in an 
> EmailException.  And we can't create a new email instance and copy because 
> there is no get message accessor available.  We need a way to remove 
> emails....somehow.

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