Fax SMTP

Send a fax programmatically through the InterFAX fax SMTP interface

InterFAX is an online fax service, allowing you to fax from any application using SMTP email messages. Sending a fax programmatically through the InterFAX fax SMTP interface is as simple as generating a regular email message. InterFAX also provides an advanced fax API with multiple destinations, deferred transmission, document resolution, and more.

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Fax SMTP Usage Samples

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Email Body Only »

How to send a fax using the SMTP interface, inserting the content of the fax message into the SMTP body.

 

Attachment Only »

How to send a fax using the SMTP interface, by adding the fax content as an attachment, and instructing the system to ignore the email body.

Email Body and Attachment »

How to send a fax using the SMTP interface, by adding an attachment, and instructing the system to send both the SMTP body and the attachment in the fax message.

 

Deferred Transmission »

How to send an SMTP fax at a future time.

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Full documentation of all API methods, including REST and SOAP

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