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Adds an attachment to the email based on a container field.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
SendMail 4.3 Yes Yes Yes Yes Yes

MBS( "SendMail.AddAttachmentContainer"; EmailID; Container { ; Name; MimeType; InlineID } )


Parameter Description Example value
EmailID The email reference number obtained using SendMail.CreateEmail function. $EmailID
Container The container to attach to email. Attachment::Container
Name Optional
The name for the attachment.
If empty, version 6.2 or newer uses file name from container.
MimeType Optional
The mime type to use. e.g. "application/pdf" for PDF files. If missing, we use "application/octet-stream".
Version 6.2 or newer detects mime type from file extension if needed.
InlineID Optional
The content ID for inline images (CID).
Empty text or no parameter gives regular attachment.


Returns OK or error.


Adds an attachment to the email based on a container field.
Version 5 of MBS Plugin can encode file name for preserving non ASCII characters. Still for compatibility it is recommended to use simply ASCII names.
You can use Text.FileExtensionToMimeType to find the mime type for a file extension.
You can use AddAttachment several times to add several attachments.


Add attachment:

Set Variable [$r; Value:MBS("SendMail.AddAttachmentContainer"; $EmailID; Attachment::Container; Attachment::Name; Attachment::Type)]

See also

Example Databases

SendCommand   -   SendMail.AddAttachmentFile

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