Before

1 Designer creates a bitmap with a new campaign.

2 You receive the campaign and start slicing and coding html tables trying to write compatible code.

some hours later...

3 New campaign is coded and ready to test on every different email client. You found it's not working on some Outlook version and changes on code are needed.

some hours later...

4 Repeat again all steps with the mobile version. Coding, check and fixing.

some hours later...