Earlier I had used dovecot+postfix for my personal email system. The advantages are that if you roll your own you can do whatever the heck you want.
Huge disadvantage (other than the fact that power, static IP etc are all your problem) is that a LOT of email providers will think you are spam.
Now I use SES for outgoing (for my app) and Gmail for incoming. Works a lot better. I remember reading that Gmail lets you write filters and what not as well, but I have not examined it in detail. I'm sure its do-able.
Huge disadvantage (other than the fact that power, static IP etc are all your problem) is that a LOT of email providers will think you are spam.
Now I use SES for outgoing (for my app) and Gmail for incoming. Works a lot better. I remember reading that Gmail lets you write filters and what not as well, but I have not examined it in detail. I'm sure its do-able.