VoIP.ms

Overview

VoIP.ms is a VoIP provider based in Quebec, Canada, that sells phone numbers and SIP calling. SMS and MMS can be turned on for US and Canadian local and toll-free numbers marked as SMS-capable. The site blocks automated access, so the details below come from VoIP.ms's own wiki as archived on 28 May 2026.

Key features

• Send and receive texts from the web portal, a mobile message center, email, SIP MESSAGE, SMPP and the API
• URL callback: an HTTP GET to your server for each inbound message, retried until your page answers "ok" if you turn that on
• Forwarding to another phone, a SIP account or email
• MMS (in beta) with up to 3 files of 1.3 MB each, and 3CX integration

Pricing

SMS costs $0.0075 and MMS $0.02 per incoming or outgoing message. Number and calling rates were not checked.

Texting works only between US and Canadian numbers. API sending is capped at 100 messages a day unless support raises it, and VoIP.ms may disable SMS on accounts that show marketing, automation or bulk patterns.

How it compares to Linq

VoIP.ms has no iMessage or RCS. It charges per message, while Linq charges a flat fee from $260 a month and is sold for AI agents; VoIP.ms caps API sends and may disable automated texting. VoIP.ms carries calls both ways over SIP, while Linq's API only forwards inbound calls.

Best for

People and small businesses in the US and Canada who already use VoIP.ms for calls and want texting on the same numbers.

Sources

• web.archive.org/web/20260528032020/https://wiki.voip.ms/article/SMS-MMS
• github.com/VoIPms