MAPI control Vs MAPI api

[vickyyahoo]

Hi,

I'm just curious to know, which one is more efficient like suppose if I am using Mapi message and Mapi session control
instead of using APIs (set of APIs to send mails). I would like to know performance wise and also in terms of memory.

Thanks
Vicky

 

[paulbent]

There will be a small overhead using the ActiveX controls but I don't think it will make a significant difference to performance or memory. You could always build both versions and test.

Note that if using the API functions you need to use the "B" functions which are largely undocumented but included in the API text viewer. The reason is that the MapiMessage structure contains pointers to arrays of recipients and file attachments and VB can't include pointers in structures. The B functions permit these arrays to be passed as separate parameters.


Paul Bent
Northwind IT Systems

http://www.northwindit.co.uk