Yes, both Vocus.io and SocialMailer offer a Free Trial.
Vocus.io 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 Vocus.io begins at $5/Month, while pricing details for SocialMailer are unavailable.
Some top alternatives to Vocus.io includes Bulky, OutreachPlus, SocialMailer, Use Outreach, Qualified, SmartReach.io, Workvivo, SellScale, InboxPro, Sigmail, Go Follow-Up and IFTTT.
Some top alternatives to SocialMailer includes Campaigner, Moosend and SMTP.