What is the difference between 「届け」and 「届ける」？

Question

Found a phrase on article which says,

写真{しゃしん}をお届{とど}け!

i don't think it's meireikei, so why the verb doesn't end with ru?

Answer 1

写真をお届け!

I think it's short for

写真をお届けします！
or 写真をお届けいたします！

"We will deliver a photo/photos to you!"

お届けする is the humble form (謙譲語) of 届ける.

Examples:

～をご報告 / ご案内 / ご連絡 / ご紹介(いた)します！--> ～をご報告！/ご案内！/ご連絡！/ご紹介！
キャンペーン情報をお知らせ(いた)します！--> キャンペーン情報をお知らせ！

Answer 2

It's short for お届けなさい. (It's not included in Standard Japanese, i.e. it's dialectal.)