sometimes antivirus scanning emails might corrupt the email header, which becomes inaccessible to use.

How would the previous sentence be correctly capitalized?
Answer: Sometimes antivirus scanning emails might corrupt the email header, which becomes inaccessible to use.
some leopard slugs looks as the dark one on the photo, while other have long spots, so they look as a leopard on the skin. a spanish slug has a plain colour without any spots, and often their head is darker then the body.

How would the previous sentence be correctly capitalized?
Answer: Some Leopard slugs looks as the dark one on the photo, while other have long spots, so they look as a leopard on the skin. A Spanish slug has a plain colour without any spots, and often their head is darker then the body.
one thing about progressive slots is that the progressive jackpot is not shown in coins but it's shown in credits.

How would the previous sentence be correctly capitalized?
Answer: One thing about progressive slots is that the Progressive Jackpot is not shown in coins but it's shown in credits.
export messages retrieved through search to standard formats for additional review.

How would the previous sentence be correctly capitalized?
Answer: Export messages retrieved through search to standard formats for additional review.