Those codes have 6 characters, always. All - numbers.

Textra should automatically offer to copy them to clipboard. Google Messages does that and I think its very smart. Especially since 2 factor authentication codes are time sensitive.

Currently i have to copy whole message, paste as Draft, select code, copy again... Waste of time!

Textra could simply show popup with message "Do you want to copy XYZXYZ to Clipboard?" with Yes / No.

PS. It could do some magic with phone numbers, too! But verification codes (6 letters) should be easy fix!