Different conversion codes for different products?

Tracking conversions in several campaings and adgroups

[silverbytes]

Conversion newbie question:
I have 2 campaigns each point to a different website.

1- Do I need to paste the conversion code in both sites, in proper "conversion page" (thank you page)?

2- What If I have several adwords adgroups in same campaign and I need to know what ads are converting?
Does the code help me to track that?

3 - Is this correct?:

1) Visitor click adwords ad
2) Visitor send me email from landing page with mailto link
3) I send an email to visitor with link to conversion page
4) Visitor clicks that link and Adwords counts a conversion

Since visitor will get into conversion page from an email link, will cookie detect it's origin (adword click) and track the conversion?

Is that correct?

[netmeg]

I think it's supposed to keep the cookie around long enough to do that. But you could test it yourself to see.