Apologies for being dense; as I wrote:

The existing solution comprises some Delphi projects to use the DLL and I have derived a solution from one of these but the trial version I am using puts the name of the supplier of the DLL at the foot of each mail, which is undesirable for my purposes. Spending $100+ would solve that but ...

I discovered the Synapse stuff yesterday and am still exploring its documentation, such as it is. If anyone has experience in using this product, I would be grateful for guidance, especially on handling attachments.

I discovered the Synapse stuff yesterday and am still exploring its documentation, such as it is. If anyone has experience in using this product, I would be grateful for guidance, especially on handling attachments.

Is good idea to read synapse web pages, include their wiki pages!

You can download latest synasnap (Synapse snapshot), because inside last synasnap you can found updated documentation inside source code. (Synapse using PasDoc now!)

Synapse have their own e-mail list too, where you can get lot of support.

However, if you still fail, exists person with big experience with Synapse... it is author of Synapse. ;-)