Sendblue vs LoopMessage vs Blue Reacher: An Honest Comparison
Quick verdict
Sendblue and LoopMessage both sell iMessage through an API and both publish pricing, which makes this one of the few comparisons in the category you can run on numbers. Sendblue charges $100 per line per month for inbound-only messaging, with outbound on its sales-gated Blue Ocean plan capped at 50 new contacts per line per day, per its llms.txt on 9 August 2026. LoopMessage starts at $59.99 per dedicated sender, caps daily contacts at 300 or 1,000, and does not support cold messaging by its own rules. Blue Reacher, our platform, is the third column: outbound included at a published price.
Key takeaways
- Sendblue is the YC-backed name most buyers meet first.
- Sendblue's G2 profile at 4.8 across 65 reviews is the largest third-party review base in the category.
- LoopMessage has been in market roughly six years, the longest run of any iMessage API.
- Cold outbound is the quiet gap on both pricing pages.
- LoopMessage Light at $59.99 becomes $74.99 with number, $89.99 with fallback, $119.99 with Init.
- Sendblue fits inbound-first workflows: flat pricing over an add-on stack, or AI products built on inbound conversations.
Reply rate by outbound channel
Sendblue vs LoopMessage at a glance
Sendblue is the YC-backed name most buyers meet first. LoopMessage is the longest-running iMessage API in the category at roughly six years in market.
- Sendblue figures: sendblue.com and its llms.txt. LoopMessage: loopmessage.com, August 2026. Corrections via /corrections are fixed, dated, and logged.
Pricing model
- Sendblue
- Per line per month, no per-message fees. $0 sandbox, $100/mo AI Agent plan, Blue Ocean by sales quote
- LoopMessage
- Per dedicated sender per month, metered by daily contacts, with add-ons priced separately
- Blue Reacher
- Per line per month, flat, unlimited iMessages (50 opted-in / 30 cold new contacts a day)
Cold first-touch outbound
- Sendblue
- Blue Ocean plan only: sales-gated, 50 new contacts/day/line, 200 follow-ups/day, 5 messages max without a reply (their llms.txt, 9 Aug 2026)
- LoopMessage
- Not supported in the general case; first sends need an add-on, a completed warm-up period, and recent consent
- Blue Reacher
- Core use case, included
Daily volume
- Sendblue
- 1,000 inbound contacts per day on the $100 plan
- LoopMessage
- 300 daily contacts on Light, 1,000 on Regular
- Blue Reacher
- No hard daily contact caps
Phone number
- Sendblue
- Dedicated number included on paid plans
- LoopMessage
- +$15/mo add-on
- Blue Reacher
- Included, with custom area code
Fallback
- Sendblue
- Automatic fallback, $0 SMS fallback fees
- LoopMessage
- SMS and RCS fallback is a +$15/mo add-on
- Blue Reacher
- RCS then SMS included
Entry price
- Sendblue
- $100/line/mo, inbound-only (their llms.txt, 9 Aug 2026)
- LoopMessage
- $20/mo shared sender, $59.99/mo Light dedicated sender (Aug 2026)
- Blue Reacher
- $249/line/mo ($199 at 4+ lines)
Security disclosures
- Sendblue
- Data incident disclosed 5 Aug 2026 in their own report
- LoopMessage
- None disclosed
- Blue Reacher
- None disclosed
Time in market
- Sendblue
- In market since 2023, Y Combinator Summer 2023 batch
- LoopMessage
- About six years by its own count
- Blue Reacher
- Newer entrant
Where Sendblue beats LoopMessage
Sendblue's G2 profile at 4.8 across 65 reviews is the largest third-party review base in the category. Y Combinator backing answers the will-they-exist question a CFO asks about young vendors.
- $100 per line per month includes dedicated number and $0 per-message, $0 A2P, $0 carrier surcharges, $0 fallback. LoopMessage prices number, fallback, and conversation initiation separately.
- The only meaningful third-party review base in the category: G2 4.8 across 65 reviews (July 2026)
- A free sandbox with API access and no credit card, so testing costs an afternoon
- Flat per-line pricing with the number and fallback included, no add-on stack
Where LoopMessage beats Sendblue
LoopMessage has been in market roughly six years, the longest run of any iMessage API. It has HighLevel, Zapier, n8n, Pipedream integrations, WhatsApp add-on, and Loop Lookup for iMessage availability.
- Shared senders: $20/month. Dedicated Light: $59.99 versus Sendblue's $100, with free sandbox. Publishes limits: 300 daily contacts on Light, 1,000 on Regular, every add-on priced on page.
- About six years in market, the longest track record among iMessage APIs
- $20/mo shared and $59.99/mo dedicated entry pricing, below Sendblue's $100
- Every cap and add-on published: daily contacts, number, fallback, conversation initiation
- A free shared tier for schools and non-profits
- Multi-region sender coverage beyond the US, rare in this category
Neither one sells cold outbound at a published price
Cold outbound is the quiet gap on both pricing pages. Sendblue's $100 plan cannot message contacts who haven't texted first. Blue Ocean caps at 50 new contacts per day.
- LoopMessage doesn't support outbound-only messaging per its pricing FAQ. First messages require Init conversations at $30/month plus $30 one-time, plus warm-up and consent. Neither offers visible pricing.
Those are our assumptions. The Blue Funnel Map runs the same arithmetic on the funnel you actually have, and you keep the map either way.
Run these numbers on your funnelWhat a working line actually costs
What a working line actually costs
LoopMessage Light at $59.99 becomes $74.99 with number, $89.99 with fallback, $119.99 with Init. Capped at 300 daily contacts. Regular at $159.99 caps 1,000 daily.
- Sendblue's $100 is all-in: number, $0 per-message, $0 A2P, $0 surcharges, $0 fallback. Catch: inbound-only. Blue Reacher: $249 per line with iMessages, 50 opted-in / 30 cold new contacts a day, and setup.
Where Sendblue fits, and where LoopMessage fits
Where Sendblue fits, and where LoopMessage fits
Sendblue fits inbound-first workflows: flat pricing over an add-on stack, or AI products built on inbound conversations. Starting conversations isn't included in the $100 plan.
- LoopMessage fits two-way messaging with opted-in users: six-year track record, every cap and price published, free tier for schools and non-profits. Cold first touch is ruled out by its pricing FAQ.
Where Blue Reacher fits, and who each of these is actually for
Where Blue Reacher fits, and who each of these is actually for
Blue Reacher sends blue-bubble texts from your CRM across the funnel, driving 2-3x the reply rate of cold email. It starts conversations with prospects who have never messaged you, at volume, without A2P registration.
- Pricing: $249 per line per month or $1,949 per year. Outbound is included, not quoted. Unlimited iMessages (50 opted-in / 30 cold new contacts a day), no hard daily caps, no per-message billing, RCS then SMS fallback, white-glove setup.
- Sendblue wins on reviews. LoopMessage wins on price and multi-region reach. Blue Reacher: price printed, outbound included, sequences built with you, for B2B teams starting conversations.
Frequently asked questions
Is Sendblue or LoopMessage cheaper?
LoopMessage is cheaper at entry: $20 shared or $59.99 dedicated versus Sendblue's $100. With LoopMessage add-ons, a dedicated line with number, fallback, and conversation initiation runs $119.99 to $159.99. Sendblue's $100 includes number and fallback but covers inbound-only messaging.
Can Sendblue or LoopMessage send cold outreach?
Not at published prices. Sendblue gates outbound behind Blue Ocean with 50 new contacts per day cap. LoopMessage doesn't support outbound-only messaging; first messages require Init conversations, warm-up, and consent. Blue Reacher includes cold outbound at $249 per line.
Do Sendblue or LoopMessage charge per message?
No. Both bill flat rather than per message; the meters just differ. Sendblue lists $0 per-message fees and bills per line per month. LoopMessage advertises unlimited messaging but meters daily contacts: 300 on Light, 1,000 on Regular, and $50 per extra block of 50 contacts on shared senders.
What happened in the Sendblue security incident?
Sendblue published an incident report on 5 August 2026 describing unauthorized access to conversation records on 7 and 10 July 2026 through a database access-rules vulnerability. Access included message content, phone numbers, and contact details. Read it as part of any security review.
Do I need A2P 10DLC registration to use an iMessage API?
No. A2P 10DLC governs carrier SMS routes and iMessage doesn't run on them. Consent law still applies: TCPA covers every channel, so you need a lawful basis for contact and a working opt-out.
What daily volume can each platform handle?
LoopMessage: 300 on Light, 1,000 on Regular. Sendblue: 1,000 inbound on the $100 plan; Blue Ocean caps 50 new contacts and 200 follow-ups per day. Blue Reacher: no hard daily contact caps. Lines pace at 50 opted-in / 30 cold new contacts a day; replies are never metered.
Want the conversations started for you?
Sendblue caps and quotes outbound, and LoopMessage rules it out. Blue Reacher sends blue-bubble texts from your CRM with the line managed for you, white-glove setup included, and no A2P registration required. $249 per line per month, published, with the $449 activation fee waived on annual billing. Book a demo, ask us to open it by text, and see the channel work on your own phone before you commit.