Before you say "but you can't spell "welcome" without "we," take a read over this actual welcome email I received:
When I opened our first store 51 years ago, no one could have imagined the ease of online shopping. From the beginning – starting with [the stores], continuing through our catalog and now at website.com – we've made exceeding your expectations for quality and service our first priority. Now that we're in touch by email, we can offer you even more.
Together we'll share the pleasures of [online retail category].
Do you "we-we" all over yourself? Take the test with Future Now's nifty We We Monitor. Simply enter your URL, hit submit and check your We We Quotient.