If you want to be taken seriously get a custom email address.

If you have a business email address that ends in @yahoo or @telus or @shaw or anything generic you may be showing potential customers that you don't take your business seriously. 

This is especially, hugely important if you run a business. Honestly, nothing makes us scratch our heads more than seeing an ad with a business name, tagline, URL, and finally a generic johnbbqrepairandteacozies@yahoo.com

To wit: Get a custom email address. You'll look like you care, and you'll look professional. Google for Work sets you up with a custom yournam@yourdomain.com email + so many more business savvy tech things you need to run your business like a pro. 

Here's the article on LinkedIn that triggered today's blog:

https://www.linkedin.com/pulse/dont-hire-hotmail-users-other-tips-save-your-company-culture-kogan