SMS and messaging APIs · Comparison

AWS End User Messaging SMS vs Sinch SMS API vs Twilio Programmable Messaging

3 products compared side by side: what you pay for with each one first, then the five access facts, entry prices, recorded plan limits and the bottom line of each review. The evidence note under the table says how each product was checked.

Side by side

AWS End User Messaging SMS vs Sinch SMS API vs Twilio Programmable Messaging: value, access facts, plan limits and bottom lines
Metric	AWS End User Messaging SMS	Sinch SMS API	Twilio Programmable Messaging
What you're paying for	Compliance includedUS texting from your own AWS account, inside AWS’s SOC 2, ISO 27001 and HIPAA scope, with opt-outs, events and 10DLC registration as AWS APIs.	Built-in reachPrepaid SMS priced for 241 countries from one account, with US 10DLC registration in the same dashboard or API and a SOC 2 Type II that names the SMS API.	Compliance includedUS texting with every fee and the compliance paperwork on public pages, plus opt-outs and 10DLC registration handled through the API.
Overall score	6.9	7.6Best	7.2
Free option	Paid only	Free trial	30-day free trial
Card to start	–Not measured	No card needed	No card needed
Getting access	Approval wait	Self-serve	Self-serve
Starter priceCheapest paid plan	$0.00774/US SMS + carrier fee	$0.0078/message	$0.0083/SMS segment
Pricing model	Usage-based	Usage-based	Usage-based
Pricing page	Public prices	Public prices	Public prices
US SMS rate (10DLC)	$0.00774 per message part, outbound; inbound $0.0075	$0.0078 per message, outbound or inbound	$0.0083 per segment, outbound or inbound
US carrier fees	One all-network fee: $0.00421 (10DLC, long code, toll-free)	Per carrier: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.0050 (outbound; carrier fee article of Oct 1, 2026)	Per carrier: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.005 (outbound)
Local number	$1/mo (10DLC)	$1.00/mo plus $1.00 setup	$1.15/mo
10DLC registration fees	Brand $4.50, optional brand vetting $41.50, campaign $2/mo low-volume or $10/mo; no campaign vetting fee listed	Brand $4, campaign review $15 per submission, $10/mo standard or $1.50/mo low-volume mixed (under 10k SMS/mo); optional vetting $41.50	Passed through: brand $4.50, campaign vetting $15, $1.50/mo low-volume mixed
Reference scenario (10,000 US texts/mo)	$122.88, computed	$134.00, computed	$130.61, computed
Free option	None for SMS; sandbox sends billed texts to up to 10 verified numbers	Trial credit, no card ($2 for US accounts per archived help); texting sandbox	30-day trial: 100 SMS to up to 5 verified numbers, no card
Volume discounts	None listed for SMS	Not published; contact sales	Mentioned but not published; committed use by sales
SOC 2 / ISO 27001	Listed in AWS SOC 1/2/3 and ISO 27001 scope	SOC 2 Type II naming the SMS API; group ISO 27001 certificate	SOC 2 Type 2 (all services) and ISO 27001
HIPAA BAA	HIPAA eligible under the AWS BAA (voice and WhatsApp excluded)	Product-level BAAs offered; SMS API not named	Yes, SMS eligible; needs Security or Enterprise Edition
Non-US data region	The AWS Region you pick, EU Regions included	EU (Ireland, Sweden), Australia, Brazil, Canada through the account manager	Ireland (IE1) for SMS; no +1 numbers there
Opt-out handling	Automatic STOP/HELP by default; self-managed optional	Automatic STOP blocking once consent management is switched on (Conversation API)	Automatic STOP/HELP on long code and toll-free
SSO	SAML 2.0 through IAM Identity Center, no extra charge	SAML in Sinch Build; no plan condition stated	SAML 2.0 in Twilio Editions, by sales
Bottom line	From its public pages, AWS End User Messaging SMS pairs a published US price with AWS’s compliance scope, and SSO and an audit log at no extra charge. There is no trial, production needs approval per Region, and technical support is a paid plan.	From its public pages, Sinch offers a prepaid SMS API with per-country prices, SAML SSO, non-US servers and a SOC 2 Type II for SMS. Its US carrier and 10DLC fees sit in help articles that call them "only indications".	From its public pages, Twilio publishes every US fee and a full set of compliance documents for SMS, with opt-outs and 10DLC registration handled by the platform. Our scenario costs more than at Telnyx or AWS, volume tiers are not published, and a few pages disagree on fees.

Evidence: AWS End User Messaging SMS: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Sinch SMS API: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Twilio Programmable Messaging: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.

When to pick each

In the words of each review, with the date its facts were checked.

From our AWS End User Messaging SMS review
Checked Oct 15, 2026
Pick AWS End User Messaging SMS when
You run on AWS and want SSO through IAM Identity Center at no extra charge, with a lower scenario figure ($122.88 against $130.61 a month, computed).
Pick Twilio Programmable Messaging when
You want a free trial, web support for every account and carrier fees listed per carrier.
From our AWS End User Messaging SMS review
Checked Oct 15, 2026
Pick AWS End User Messaging SMS when
You need a HIPAA path for SMS, want the US carrier and 10DLC fees on the pricing page and price list, and a lower scenario figure ($122.88 against $134.00).
Pick Sinch SMS API when
You want trial credit without a card and a sandbox for test messages that does not bill.
From our Sinch SMS API review
Checked Oct 15, 2026
Pick Sinch SMS API when
You want SAML SSO with no plan condition stated, a texting sandbox, and prices for 241 countries in one prepaid account.
Pick Twilio Programmable Messaging when
You need a HIPAA BAA that names SMS, an audit log, carrier fees on the pricing page itself and a slightly lower scenario figure ($130.61 against $134.00).
From our Sinch SMS API review
Checked Oct 15, 2026
Pick Sinch SMS API when
You want a trial credit without a card, a sandbox that does not bill, and carrier fees listed per carrier.
Pick AWS End User Messaging SMS when
You already run on AWS and need a HIPAA BAA for SMS, CloudTrail audit logs and SSO through IAM Identity Center.
From our Twilio Programmable Messaging review
Checked Oct 15, 2026
Pick Twilio Programmable Messaging when
You want a free trial, free web support for every account and carrier fees listed per carrier.
Pick AWS End User Messaging SMS when
You already run on AWS and want SSO through IAM Identity Center at no extra charge and SMS billed on your AWS invoice.

Entry price

Baseline: each product's cheapest paid plan, per month. Included usage differs, so read the line under each price.

AWS End User Messaging SMS
10DLC phone number
$1/mo
Per number; charged while the registration is pending
- Brand registration $4.50 one-time; brand vetting $41.50 optional
- Campaign $2/mo low-volume or $10/mo regular
- $12.50 extra for public for-profit brands
- $50 T-Mobile campaign activation fee postponed until further notice
Sinch SMS API
Local number (10DLC)
$1.00/mo
Plus $1.00 one-time setup
- 10DLC fees (fee article, updated Sep 17, 2026): brand $4, campaign review $15 per submission, low-volume mixed campaign $1.50/mo (under 10k SMS a month), most other campaigns $10/mo
- Campaign fees billed 3 months up front
Twilio Programmable Messaging
Local number (10DLC)
$1.15/mo
Per leased long code; bring your own number $0.5/mo
- 10DLC fees passed through at cost: brand $4.50, campaign vetting $15
- Low-volume mixed campaign $1.50/mo; standard campaign $10/mo

Prices as listed on each pricing page, in USD per month, excluding tax. Observed: AWS End User Messaging SMS 2026-10-15, Sinch SMS API 2026-10-15, Twilio Programmable Messaging 2026-10-15.

Which one fits

If you need to start today without a sales call: Sinch SMS APISelf-serve sign-up, no card needed; the highest score of the 2 self-serve products here (7.6/10).
If you want to try it without entering a card: Sinch SMS APIFree trial, no card needed, and the highest score of the 2 that skip the card (7.6/10).
Lowest starter price: AWS End User Messaging SMS and Sinch SMS API$0.00774/US SMS + carrier fee for the Pay as you go plan each.
Highest overall score: Sinch SMS API7.6/10 (Good). The review shows the score breakdown and the run behind it.

Picked by fixed rules from the table above, not by hand. How we score

Full reviews

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