Sendblue Pricing, Explained and Verified
The short answer
Sendblue pricing has three tiers as of 13 Sep 2026: a $0 sandbox (shared number, 10 verified contacts, inbound-first), a $100 a month AI Agent plan per dedicated line (inbound-first, 1,000 inbound contacts a day), and a custom-priced Enterprise tier that is the only place full outbound messaging lives. There are no per-message fees. The number outbound buyers need is the one not on the page.
Key takeaways
- Sendblue bills flat per line per month, with $0 per-message fees, $0 A2P registration, $0 carrier surcharges, and $0 SMS fallback fees, per its pricing page.
- Sendblue does not publish it. Outbound lives on the Enterprise tier, priced custom by volume through a sales conversation.
- For an inbound flow, the math is clean: $100 per dedicated line, no setup fee published, sandbox first if you want it.
What are Sendblue's published plans?
Sendblue bills flat per line per month, with $0 per-message fees, $0 A2P registration, $0 carrier surcharges, and $0 SMS fallback fees, per its pricing page. Three tiers, verified 27 Sep 2026:
Free Sandbox
- Price
- $0
- What it includes
- Full API access in a test environment, up to 10 verified contacts, CLI and SDK support, community support
- What it excludes
- No dedicated number, no outbound messaging, no webhooks or callbacks; contacts must text you first
AI Agent
- Price
- $100 a month per dedicated line
- What it includes
- Dedicated phone number, up to 1,000 inbound contacts a day, webhooks and callbacks, media, typing indicators, reactions, priority support
- What it excludes
- Inbound-first: starting conversations with your leads is not this plan's job
Enterprise
- Price
- Custom, volume-based
- What it includes
- Everything in AI Agent plus full outbound messaging, multiple dedicated lines, dedicated account manager
- What it excludes
- A published price; outbound is quoted through sales
What does Sendblue outbound actually cost?
Sendblue does not publish it. Outbound lives on the Enterprise tier, priced custom by volume through a sales conversation. Sendblue's own developer documentation has described the outbound lane with hard mechanics:
- 50 new contacts per line per day, 200 follow-ups a day, and a maximum of five messages to a contact without a reply (their llms.txt, read 9 Aug 2026).
- Third parties have reported Enterprise outbound landing around $1,000 a month and up; Sendara's June 2026 comparison table lists Sendblue at quote-only with roughly that figure.
- Treat any specific number as reported rather than published: the only way to price Sendblue outbound is the sales call.
- Annual and volume discounts exist but are also unpublished: their FAQ says to contact sales for volume pricing on 10 or more lines or annual billing.
- Published: $100 a month per line, inbound-first, verified 27 Sep 2026
- Not published: the outbound (Enterprise) price, the annual discount, and the 10+ line volume rates
- Reported by third parties, unverified: roughly $1,000 a month and up for outbound
- Outbound mechanics from their own docs: 50 new contacts a day, 200 follow-ups, 5-message cap without a reply (9 Aug 2026)
What does month one look like on Sendblue?
For an inbound flow, the math is clean: $100 per dedicated line, no setup fee published, sandbox first if you want it.
- A three-line inbound deployment is $300 a month, and evaluation genuinely costs nothing but an afternoon.
- For an outbound team the sequence is different: a demo request, a sales conversation, a custom quote sized to your volume, then onboarding.
- Budget planning happens after the call, not before it, and the published $100 figure is not the number you will pay. That sequencing, not the price itself, is the cost most outbound buyers trip on.
How does Sendblue pricing compare with Blue Reacher?
Different jobs, different disclosure. Sendblue publishes the inbound price and quotes the outbound one; Blue Reacher publishes the outbound price because outbound is the product.
- Blue Reacher figures from bluereacher.com; Sendblue figures verified 27 Sep 2026.
Inbound line
- Sendblue
- $100 a month, 1,000 inbound contacts a day
- Blue Reacher
- Included in the same flat line price
Outbound line
- Sendblue
- Enterprise, custom quote
- Blue Reacher
- $249 a month per line, from $199 at 4+ lines, published
Annual
- Sendblue
- Unpublished discount via sales
- Blue Reacher
- $1,949 per line per year, about $162.50 a month
Setup
- Sendblue
- None published
- Blue Reacher
- $449 activation, waived on annual billing
Per-message fees
- Sendblue
- $0
- Blue Reacher
- $0; replies never metered
Pacing
- Sendblue
- 50 new contacts a day on outbound, per their docs
- Blue Reacher
- Lines pace at 50 opted-in / 30 cold new contacts a day, published
Who runs campaigns
- Sendblue
- You, on the API
- Blue Reacher
- Built with you at onboarding, optimized after launch
Frequently asked questions
How much does Sendblue cost per month?
As of 13 Sep 2026: $0 for the sandbox (10 verified contacts, inbound-first), $100 a month per dedicated line on the AI Agent plan (inbound-first, 1,000 inbound contacts a day), and a custom volume-based quote for Enterprise, which is where full outbound messaging lives. No per-message fees on any tier.
Does Sendblue charge per message?
No. Sendblue's pricing page states $0 per-message fees, $0 A2P registration, $0 carrier surcharges, and $0 SMS fallback fees. Billing is flat per line per month, which is also how Blooio, Sendara, and Blue Reacher bill.
Can I do cold outreach on Sendblue's $100 plan?
No. The $100 AI Agent plan is inbound-first: contacts text you before you can message them. Starting conversations with your own leads requires the Enterprise tier, priced custom through sales, with mechanics their docs have described as 50 new contacts a day and 200 follow-ups a day per line.
Does Sendblue have setup fees or an annual discount?
No setup fee is published. Annual billing discounts and volume pricing for 10+ lines exist but are quoted through sales rather than published. By comparison, Sendara publishes $99 setup, Blooio publishes none, and Blue Reacher's $449 activation is waived on annual billing.
Is Sendblue cheaper than Blue Reacher?
For inbound, yes: $100 against $249 a month per line. For outbound there is no published Sendblue number to compare; third parties report roughly $1,000 a month and up, unverified. Blue Reacher's outbound price is published: $249 a month, $199 at 4+ lines, or $1,949 a year, with campaigns built for you at onboarding.
Where do these Sendblue numbers come from?
From sendblue.com's own pricing page, read on 13 Sep 2026, and from Sendblue's published developer documentation for the outbound mechanics (9 Aug 2026). Anything marked reported comes from third parties and is labeled unverified. If a figure here has gone stale, /corrections says how to flag it.
Want the outbound price on the page, not on a call?
Sendblue quotes outbound through sales. Blue Reacher publishes it: $249 per line per month, from $199 at 4+ lines, $1,949 a year at about $162.50 a month with the $449 activation waived on annual billing. Unlimited iMessages paced at 50 opted-in / 30 cold new contacts a day, RCS then SMS fallback, campaigns built with you. Book a demo.