Some restrictions apply to the size of faxes you send:
Number of Pages
There is no limit to the number of fax pages that you can send. We regularly see faxes over 100 pages in size.
When sending faxes (includes email to fax and when using the Dashboard to send a fax), there is a 25MB file size limit. Larger files will need to be split into separate faxes.
Faxes are images turned into a voice call and transmitted down a telephone line. Due to this design, faxes with a greater colour depth (more colour than white space) will take longer to transmit. Normally this is not a concern, however for international faxing this can introduce Communication Error type failures.
Check our Fax Best Practice Guidelines for information on creating the best possible fax.