How can I change my Shopify Email app Name?

[TTV]

I don't mean the email you input in regular Shopify settings; I mean the one that Shopify provides for you (545245@shopifyemail.com). How can I customize the email provided by Shopify? I can't get on the separate Shopify email app to do the settings on that app. 

[OneMobile]

Hi @TTV 

Do you have an email-sending domain that links with your shop's domain yet? (e.g. info@shop.com or hello@shop.com)

If you have one, you can change it in Settings > Notifications > Sender email.

However, be noted that you must authenticate and add a DMARC record to your custom sending domain. Otherwise, Shopify will auto-change your Sending Domain into something like 545245@shopifyemail.com to meet G-mail and Yahoo's minimum requirements.

I hope that this helps!