I have Go Daddy as a website host and they used to have an email product called WorkSpace but got rid of that a couple of months ago and integrated Microsoft 365 as an email platform and it's horrible. It's difficult to use, hard to find things, screwed up my email templates and slows down my computer the longer it's on. I switched to Zoho yesterday and they won't import all my list of nearly 10,000 contacts. So here is my question, do you know of an email platform that has these features:

* can accept at least 10,000 (or preferably no limit) on the number of contacts in a contact list (CSV file) that I can import
* At least 3GB storage space provided per email address
* A section of the email where email templates can be saved

Some screenshots of what their platform layout looks like before I create an account with them would be helpful too. Thanks.