Linq Blue vs Sendblue
The axis is whether you will accept an unpublished price for a deeper feature set. Both claim SOC 2 Type II, and both cannot be right about being the only one.
Side by side
| Linq Blue | Sendblue | |
|---|---|---|
| Advertised from | Not published | $100/mo |
| The tier most people need | Not published | $100/mo |
| Setup fee | Not published | None |
| Number | Not published | Dedicated |
| Can message first | Not published | Enterprise tier only |
| Per-message fees | None | None |
| SMS or RCS fallback | Included | Included |
| Compliance claimed | SOC 2 Type II, 99.95% uptime SLA | SOC 2 Type II, HIPAA (Enterprise) |
Rows where the two agree are dimmed. Every figure comes from the product’s own public pages, checked 2026-09-06.
What actually differs
Linq publishes the most capable feature list in this comparison: triggering tapbacks and read receipts, managing group threads programmatically, starting and scheduling FaceTime calls, and sharing live location through Find My. It also publishes no price at all, only a sandbox, an Enterprise tier and a contact form. Sendblue publishes $100 a month per dedicated line and a free sandbox.
One thing deserves stating plainly because it cannot be resolved from the outside. Linq states it is the only SOC 2 Type II compliant iMessage API. Sendblue separately claims SOC 2 Type II certification. We report both claims and adjudicate neither, and if compliance is genuinely a requirement you should ask each of them for the report rather than trusting either page. Linq also operates imessage.store, a competing directory of iMessage agents, which is worth knowing when reading its own comparisons of this market.
Linq Blue is for
Teams who need tapbacks, typing indicators, group threads, FaceTime and Find My, and will go through sales to get them.
Sendblue is for
Teams who want to know what it costs before the first call.
There is no winner here on purpose. These are different products for different situations, and the paragraph above names the question that tells you which you are in. See all nine providers compared or answer five questions to narrow it yourself.