Email attachment sent via button has no filename and no file extension (SeaTable 6.0 self-hosted)

[kiesundreif]

Hardware or environment you use

Self-hosted SeaTable instance, Linux server (Docker-based setup)

SeaTable Edition/Version

• SeaTable Enterprise (self-hosted) SeaTable Server 6.0

Describe the Problem / Question

We are using the “Send email” automation via a button. The email itself is sent successfully and reliably. However, when we attach a file field to the email:

• The attachment arrives without a filename

• The attachment has no file extension (suffix)

This happens consistently, independent of:

• File type (PDF, DOCX, XLSX)

The file content itself is correct, but without a filename and suffix it is inconvenient for recipients and sometimes blocked by email clients.

Error Messages

• No error messages in the UI

• No visible errors in the logs related to email sending

Questions

• Is this a known issue ?

• Is there a solution (e.g. configuration option, naming field, or script)?

Any hints or confirmation would be highly appreciated.

Thank you!

[kiesundreif]

the same problem occurs also with email sending via automation rule.

[rdb]

This is no known issue and probably related to the mail service you use. Please try sending your mail via a different mail service.

Another hypothesis: Does your file name contain special characters? If yes, please try sending attachments using filenames without special characters.

[kiesundreif]

you were right. thanks.

i don’t know why this problem occurs now, because I already used this email account for sending attachments. but with another mail address via exchange it works…