I found How do you make sure email you send programmatically is not automatically marked as spam? to (hopefully) be a solid guide to avoiding being marked as spam. Are there any other important tips/suggestions?
How do I track bounces,opens,clicks? These are features found in paid services like Mail Chimp and Campaign Monitor.
Opens can be tracked using a 1x1 picture file in an email. However, this is the same tactic that spammers use to validate email address existence, so you'll be fighting on the same side in that regard, unfortunately.
Clicks can be tracked by assigning a unique identifier to each link, determined by two variables: the URL that was clicked and the email address that clicked it. You can, for example, determine these on-send and store them in a database with the same unique identifier.
Bounces should bounce back to you with the email address intact.
Do the same as Mail Chimp and Campaign Monitor then. LIE about your stats.
There is no accurate way to track emails. If there was it'd just get blocked again. Most people don't want you to know these things and most email software ensures you don't. The stats provided by email tracking services are bogus.
Consider:
Only clicks can be tracked by redirecting through your server. Even then who can say that mail services won't start processing links in emails to determine whether the email is spam?