Yes, both Customer.io and SendGrid offer a Free Trial.
Customer.io is designed for Large Enterprises, Medium Business and Small Business.
SendGrid is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Customer.io begins at $100/Month, while pricing details for SendGrid 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 SendGrid includes Pipedrive, SMTP, Campaigner and Moosend.