NEVER use gmail or yahoo or hotmail as "From"
I know this rule, but yesterday I see this rule "live."
I made a new campaign, and for testing, i use to be "from" email my Gmail account - then I test sending, and I see its go to "promotion" tab on Gmail, even it contain simple words and it even not contain links in the mail.
Then I test in another email marketing service I have, and the results were same, then I change the "From" mail to be my domain mail - and wow - it the mail goes to my main mail tab.
So by only change the "From" email It's changed how Google - look at my emails I send.
I have a list of things that I love to test when Gmail put my mail on promotion or even on junk, but this is only part of 100% live proof I see the algorithm of filtering work on Gmail engine.
Thanks
Cheers,
Joe @ sfi-coop.com
"It is better to have a permanent income than to be fascinating" ~ Oscar Wilde