How to bypass mail.ru spam filter?

Question

Email

I send emails with links. What are the ways to deliver a link to a person and not fall under the spam filter?

Answer 1

Short link services and other "mirrors", make changes to the link making it inoperative, try encoding URL and HTML characters...

Answer 2

add spaces, remove http, etc.
Encode in QR Code
I have not tried all this) Is it a
mass mailing or a one-time mailing?

Answer 3

Insert a picture.
Attach PDF.
Make a link to the image
Encode in base64 and give instructions for decoding :)