error when I tried to send emails to customers

[peter888]

when we try to send emails to our customers from Admin(admin-->tools-->send emails),

getting the following error:

 

"Customer:

Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 130 bytes) in /home/goodcase/public_html/admin/includes/functions/general.php on line 35

"

 

Any one knows how I should fix this kind problems???

 

 

Thanks a lot