Compare Search Engine Optimization tools & methods
While my Ban Gmail post was mainly based on theory, I’ve found a prove by mistake that Google do search Gmail for link exchange emails – you can read about it at Matt Cutts post from May 1st 2007 and let me quote:
“A quick Google search finds similar emails that were sent to mailing lists. Reciprocal links by themselves arenâ€™t automatically bad, but weâ€™ve communicated before that there is such a thing as excessive reciprocal linking.”
So he mentions in his post that they get reports from users forwarding the link exchange requests and they find them by themselves by simply searching mails for “link exchange”.
Now, do you really want to keep using Gmail for SEO purposes?