Hi Nahima :)
You have a couple of options for creating a professional looking email address.
Firstly, you'll need a domain for your store. Once you have that set-up you can decide if you want to go the email forwarding route or the email hosting route.
Email fowarding gives you a professional email address with your domain that allows anyone to send an email to your desired address and the email will be forewarded to another email account like a Gmail, for example. It doesn't have it's own dedicated inbox though, and so sending out emails will still be under the address you are sending from.
For email forwarding, if you bought your domain through Shopify you can follow this guide: https://help.shopify.com/manual/domains/shopify-domains/email-forwarding
If you bought a third-party domain, you can check out this guide: https://help.shopify.com/manual/domains/third-party-domains/email-forwarding
If you want a dedicated inbox & to be able to send & receive with your professional looking email address, you will need to set-up email hosting. Your domain provider might offer email hosting, but if not, you can use Zoho or Google. :)
I hope this helps you out!
Shopify Support Guru
Changing your domain to point to shopify and the email are two totally separate things. If you follow the guide for changing the domain then the email will work fine in the way it always has as it doesn't change the settings for that.
The above comment by Kraken is correct.
To change the domain to point to Shopify requires just a change of the ip address in the A record. The email will continue to work as before so long as you don't change the MX record - which points mail to the mail server. Best to get a Shopify developer to help if you're confused.
Shopped email offer Shopify email hosting.
We (Liquify) offer Shopify development & can do advanced DNS changes. Just ask our Shopify developers.
For future people in this thread who haven't setup their info@ email, I'd like to share some stats we gathered from
Gorgias Shopify support app
The five most used handles we're seeing are:
This might help you adjust your handle so customers can reach out more easily and know what this email is about.