How to send .apk file over mobile Gmail?

Since .apk is a regular executable file, I was more than sure that I will be able to trick mobile Gmail in the same way as I was able to trick PC version of Gmail years ago to force it to send a PC executable (.exe) which it prevented as well. Turned out, I was wrong. Usually changing file extension to .dat or some other or compressing it with password (encrypting file) was enough for PC version of Gmail. However, for mobile version, everything that I have ready at a hand and tried failed as well: - sending as plain file (obviously), - changing .apk extension to .dat or some other, - compressing with ZIP with no password, - compressing with ZIP (ultra compression) and encrypting archive with a password, - compressing with 7ZIP (ultra compression) and encrypting archive with a password, - using an [7 years old idea](https://security.stackexchange.com/questions/35818/are-password-protected-zip-files-secure#comment55859_35818) of double compression: - compress .apk file into .zip file without password, - compress resulting .zip file again into another .zip file with password / encryption. If mobile Gmail is able to detect that I am sending .apk executable file even in 7zip compressed file with password (or it can prevent me from sending such file for any other reasons) do I have any option left? Is there any way to send .apk file over mobile Gmail (attach them to message composed in mobile Gmail)?