CC4-121 Issues scanning to email from Brother Printer

[trianglelaptops]

I have a Windows 10 client with Thunderbird currently set up to access their email account via IMAP. All program defaults that I can find are currently set properly, yet I consistently get a CC4-121 error on the computer when trying to scan to an email from their Brother Printer, saying that there is no default email application. I have noticed some people discussing this error message in relation to Windows 7 and they have suggested setting a default for "MAPI" somewhere in the custom default app settings, but this area doesn't seem to exist in Windows 10. Anyone else have this issue with either IMAP or POP3?

 

[NJW]

Make sure that Thunderbird has all its defaults in Control Panel > Programs > Default Programs > Set Default Programs. It's probably missing an association with MAILTO protocol.

Windows 10 has a strong preference for its own apps and it isn't always obvious how to override that.

 

[fencepost]

So it's scanning from the device to the PC, then the Brother software is attempting to kick it into a mail program?

Is the device itself networked, and is it viable to configure it to send email directly?