Complicated Trigger Rules

As I moved on to defined more complete trigger rules for my trigger email marketing program. I didn't expect it would be so complicated.

Initially I like to keep it simple, like..

>> Thank you email - immediate after product registration

>> Getting Started

>> 1 week cross sell

>> 120 days supplies sell

>> 240 days supplies sell

>> 360 days supplies sell

>> 1 year cross sell

>> 2 year cross sell

>> 3 year product replacement

When my agency start asking about scenarios I have not thought through.. things got complicated.

- what if customer buys and registers 2 printers 1 week apart, 1 year apart

- what if customer registers a PC and then a printer 1 week later

- what if customer buys 1 PC and 1 Notebook and 2 printers at the same time

Is the customer going to get spammed like crazy by the email engine?

There are rules that enables the system NOT to send out email if there has been email sent out within last week/ last month. However does that creates some misopportunity or less-than-ideal scenarios?

The concept of trigger is still hard to grasp. Trigger basically puts customers into queue and depending on the rules, it will start sending emails out to customers based on rules and conditions. Making changes to rules have to be particularly careful since it is tricky to stop the engine and imagine the consequences of it.

Nonetheless its still fun to pilot this out.