NOTE: This question intentionally replicates What SMS email address works for Google Voice? But that is 8+ years old, and the accepted answer does not apply. I guess it would be misleading to place a bounty on that question, users will not understand the "history" of the post.
I have a Google Voice number XXX-XXX-XXXX. How can I "build" an email address such that email sent to it show up in my SMS inbox for XXX-XXX-XXXX?
For other companies, it used to be something like posted 10 years ago:
Web application to send SMS email
Related:
https://www.reddit.com/r/Googlevoice/comments/8f8eav/will_gv_ever_have_an_emailtosms_gateway/
https://www.howardforums.com/showthread.php/1901954-Google-voice-sms-gateway