Yes, both Customer.io and StreamSend offer a Free Trial.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
StreamSend is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Customer.io begins at $100/Month, while pricing details for StreamSend are unavailable.
Some top alternatives to Customer.io includes Outgrow, ActiveCampaign, CleverTap, Moosend, Omnisend, ActiveTrail, Iterable, Hubspot Marketing Hub, Klaviyo, SendGrid, MailChimp, StreamSend, Adobe Marketo Engage and Contactspot.
Some top alternatives to StreamSend includes Campaigner, Moosend and SMTP.