ClickSend is a business messaging platform owned by Sinch. It offers a web dashboard and a REST API for two-way SMS, MMS and RCS, plus fax and printed letters and postcards. It has no iMessage. ClickSend's API docs say Voice and transactional email are no longer offered to new customers.
Prepaid top-ups with no subscription. US SMS costs $0.0285 a message on a $20 top-up and falls to $0.0093 on a $2,000 top-up, plus a $0.0041 carrier fee. MMS is $0.0370. A US toll-free number is $3.49 a month. Inbound SMS is free. A free trial is available on sign-up. RCS needs approval from the sales team.
ClickSend has no iMessage; Linq sends iMessage and falls back to RCS and SMS. ClickSend charges per message from prepaid credit, while Linq charges a flat monthly fee (Pro from $260 a month) with no per-message fees. Both publish an MCP server. ClickSend offers fax and post, which Linq does not, but its voice service is closed to new customers.
Small and mid-sized businesses that want prepaid SMS, MMS and RCS through an API or no-code tools.
ClickSend supports 20 of the 77 features compared on Linq Alternatives.