Yes, both Boost and Constant Contact offer a Free Trial.
Boost is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Constant Contact is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Boost begins at $19/Month, while pricing details for Constant Contact are unavailable.
Some top alternatives to Boost includes Pipedrive, Campaigner, Moosend, SMTP, Omnisend, Email List Verify, Constant Contact, Emma, KIRIM.EMAIL, FreshMail, MailOptin, Inbox Mailers, Listagram, SendFox, OptinMagic and Maildroppa.
Some top alternatives to Constant Contact includes Pipedrive, Campaigner, Moosend and SMTP.