Over at the Six Questions for... blog Jim Harrington interviews Eddie Generous, the editor of Unnerving Magazine.
While the magazine is currently closed for submissions they do have an anthology titled "Haunted are These Houses" open for submissions. They're seeking Gothic fiction of 400 to 6000 words (preferably under 4000 words). The deadline is April 28, 2018 and payment is 1cent a word. They are accepting both original and reprint stories for this anthology. You can find the details on their Submittable page.