I sent mine via e-mail. Under subject you can put "additinal information plus your application and UCI nubmer" in the body of the email, you can use numerical value to indicate what files you have attacted. I.e. 1....., 2......., 3...... . that will make it easy for whoever is handling your application to know exactly what you've sent instead of having to sort through to figure it out. Their e-mail address isWhen people say they are using the webform to submit additional docs, is that accessed through your myCIC? @xls you sent your docs via email, is anyone else sending it that way? @waitingInTO when you're sending things via courier are you sending originals and such? Anyone else have experience sending docs by courier when you have not been asked but are just sending updates? I have all of my extra docs to send in, they haven't asked, how should I send them?
ACCRAIMMIGRATION@international.gc.ca.
For example
Dear Sir/Madam,
RE: " input application and UCI number "
I would like to submit additional information for my spousal application with file number ........ The uploaded document include(s):
1. what up messages
2. Remittance sent ......etc
Yours Sincerely,
Good luck.