Yes, both Submittable and SocialMailer offer a Free Trial.
Submittable is designed for Large Enterprises, Medium Business and Small Business.
SocialMailer is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of Submittable begins at $84/Month, while pricing details for SocialMailer are unavailable.
Some top alternatives to Submittable includes SocialMailer, buzzbomb.com, Zoomph, CloudSocial, Astute Social, Lately, Socialshaker, SocialBook, Qualified, Workvivo, Approved Social and Sociocs.
Some top alternatives to SocialMailer includes Campaigner, Moosend and SMTP.