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delphi-xe7indy10

Indy IdMessageBuilder attachments from memory

Is there a way that one can add a related attachment from memory instead of a file saved on disk using Indy's MessageBuilder?

I am adding a footer signature to my emails and the image is saved as a blob field in a database.

I can do this with IdMessage but MessageBuilder just makes everything so easier.

I am using Delphi XE7 and Indy 10.

Solution

  • TIdMessageBuilderAttachment has a public Data: TStream property, and TIdMessageBuilderAttachments has an overloaded Add() method with an AData: TStream parameter.

    If a TStream is used for an attachment's data, the builder creates a TIdAttachmentMemory and copies the stream data into it. Otherwise, the builder creates a TIdAttachmentFile and assigns the specified filename to it.

    So, you can obtain a TStream for your blob data, such as from TDataSet.CreateBlobStream(), and create an email attachment from that.