Crimewave: submission guidelines

From their website:

We are always open to submissions of new modern crime and mystery short stories of up to about 10,000 words in length. Follow these simple guidelines:

• Send your manuscript mailed flat or folded no more than once, in standard manuscript format — typed (not handwritten!), double spaced, good margins all round, printed in black ink on one side of white paper, numbered pages, keyword from story title and author's name on each page — with a covering letter and adequate return postage (ie a stamped, self-addressed envelope).
• Please include a covering letter but don't worry too much about it, just introduce yourself and list any relevant credits, things like that. If you've never been published before tell us this too — we've published many debut stories over the years.
• Use a paper clip to hold pages together, not staples or any kind of binder. There is no need to place your manuscript inside a folder. An ordinary paper envelope is sufficient, don't use bulky padded envelopes.

There are more guidelines. To read these go here.