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Attachment Size Limit

Stewart -

I am getting an error saying an attachment is too big when I try to attach a file of 5MB to an email. How do I adjust the allowable size for email attachments in Atmail?


  • On-Premise Server + WebMail Installations: Version 6.0 > Current Version
  • Webmail Only Installations: Version 6.0 > Current Version

Attachment size limit.


  1. Attachment size is set via the servers php.ini settings file. Normally located at /etc/php.ini.
    ; Maximum size of POST data that PHP will accept. 
    post_max_size = 8M

    ; Maximum allowed size for uploaded files.
    upload_max_filesize = 2M
  2. Change the size to suit your needs. After making changes, restart Apache.
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