which mail service doesn't ask phone number, lengthy inactive period.....
 

which mail service doesn't ask phone number, lengthy inactive period, heavy file size limit & heavy storage ?

some small providers like aliyun maybe can do the job.

Any English mail services exist ?

Not the most popular opinion maybe, but if you decide not to give the phone number when signing up, then Gmail should do the trick for you, and has the stability and reliability smaller providers cannot always guarantee.

Inactivity limit: 9 months

File size: up to 10 MB per email (I don't know what you require, but for sending around "average" files like photos, PDFs, Word documents, Powerpoint slides, ... it meets the requirements by far)

Storage: 15 GB

I don't think you have to enter a phone number when signing up. I didn't. Unless this changed recently, you can perfectly skip that step.

Gmail does require mobile for verification during sign up process. At least for me the recent years it appears as this.