User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
Thanks for responding John, but I don't know why you think my method
sounds complicated since I didn't describe 'my method' in detail. I
simply said that mail() isn't working consistently in my script - one
single script - which is from a template of a working process that has
previously worked without problems.