[quote user="irelam"]

As stated in the helpfile: e-mail address is always contained in field 1.  See Data file section.  

[/quote]

Have never had a problem putting lname in field 1, fname in field 2, and e-mail in field 3.  Do that because I can add/edit records more easily

[quote user="irelam"]

 If you have a CSV file that you wish to make a particular line into a comment, I suggest you just insert a fake email address as field 1 (something like me@localhost)

HTH

Martin 

[/quote]

Using such a fake email address works. Thanks.

To make a record in a CSV file act like a note or disable an address, I prepended a series of commas.  While that worked, I got an Invalid address error message when I sent a message.  Is there a way to avoid getting an Invalid address error message?

As stated in the helpfile: e-mail address is always contained in field 1.  See Data file section.   If you have a CSV file that you wish to make a particular line into a comment, I suggest you just insert a fake email address as field 1 (something like me@localhost)

HTH

Martin