Like anyone who sends postal mail, I compose my letters electronically, print, sign, and mail. Of course I keep a copy of the original unsigned letter.

But after signing I never scan the signed version because it’s inconvenient and a raster version of the whole page is mostly redundant while consuming much more space.

Is this a bad practice that could burn me? Would a court reject my letter as evidence if it does not include my own hand-written signature exactly as it was mailed?

If yes, would it generally be sufficient to keep a log of letters I sign, which could perhaps be used as evidence to the fact that I signed a letter?