Custom SMTP
Emails generated from the Files.com platform are sent by no-reply@files.com by default. Customers on some plans can use a custom SMTP server for all outbound mail, allowing full control over the from address, and integration with email security and authentication standards such as DKIM and SPF.
Files.com supports any type of custom mail server that supports the SMTP standard, which is nearly anything that supports sending mail. This includes a variety of hosted mail providers, such as Amazon SES, SendGrid, Mailgun, Postmark, etc. Most of these providers also support some form of domain authentication.
SMTP Settings
By default, your site will use the standard outbound SMTP, which uses the Files.com email service. If you instead enable the custom outbound SMTP, you must provide the information for connecting to your email service. All of the emails generated by Files.com will be sent using the settings you provide.
The Server address must be the fully qualified hostname of your SMTP server. If you wish to use a port other than the default of 25, enter that in the Server port.
The Authentication type refers to how you authenticate to your SMTP service. Valid options are none, plain, normal, or cram_md5. Your mail provider should tell you which option is appropriate for your service. If you select an option besides none for the authentication type, you must also provide the SMTP username and SMTP password that will be used for sending mail. Along with the required address that messages will be sent from, you can also provide a reply-to address.
Microsoft Exchange Online Is Not Compatible
Microsoft Exchange Online server, Office 365, or smtp.office365.com cannot be used as a custom SMTP server with your Files.com site. Microsoft does not permit authentication via the methods Files.com uses to connect.
For an alternative solution within the Microsoft ecosystem, Azure Communication Services can provide SMTP services for your Files.com site. You can also use other mail providers, such as Amazon SES, SendGrid, Mailgun, or Postmark.