Evidence labels: [V] the author opened the page during the build (18 Oct 2026) and the statement is on it. [A] a vendor's own claim (true as far as the vendor's page goes; not tested). [P] a third-party write-up. [G] a guess or general knowledge, flagged so you can check it.
None of these guides was tested on a real device or tenant. They summarise vendor and Microsoft pages and point to them. Where a vendor page was not fully readable, the guide says so.
| Guide | Use when the sender is... |
|---|---|
| generic-device | any printer/scanner/fax/NAS-style device, or a model not covered below |
| hp-futuresmart | HP Enterprise / Managed printers (FutureSmart) |
| brother | Brother printers / MFCs / scanners |
| canon | Canon imageRUNNER-class devices with Remote UI |
| ricoh | Ricoh MFPs / printers |
| xerox | Xerox printers / MFPs |
| konica-minolta | Konica Minolta bizhub / AccurioPress |
| wordpress | WordPress, WooCommerce, other web-form mailers |
| line-of-business-app | custom software, scripts, monitoring, backup jobs, SaaS-on-your-server |
Microsoft's own summary of the four ways to send from a device (client SMTP submission, SMTP relay, Direct Send, High Volume Email): https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365 [V]