Study the most recent edition of "Poet's Market," an annual guide published by Writer's Digest. This book aggregates listings for poetry publishers like magazines and journals, providing information such as submission guidelines and contact information for all of them. While you could do this research on your own, amassing the information for more than ,000 publications is a time-consuming task. Determine which publications are best-suited for your style of poetry and make notes regarding their submission guidelines. Other similar guidebooks include "The Writer's Handbook" and "The Writers' and Artists' Yearbook."
Submit your poetry to magazines, journals and newsletters. Tailor your submissions for each publication by following their guidelines. For example, if a publication requests poets to send three to four poems per submission, don't send six. If it requests a cover letter, send one specific to that publication -- don't send the same cover letter to every publication.
Accept rejections and move on. Every author must cope with rejection from publishers -- it is an inevitability that you must deal with and move on. When you are rejected by a publication, submit different poems to them and to other publishers.