Best Transactional SMS Software in 2026
Updated
In short: ClickSend SMS API is ranked #1 of 76 as of 7 October 2026, ahead of Textmagic and Bandwidth Messaging API. The best-ranked option with a free plan is Clickatell SMS API. The lowest first paid tier on this page is Plivo SMS API at $0.01/mo.
When a service needs to send updates by text, delivery and response handling are useful points of comparison. Compare delivery status, two-way messaging, and webhooks, and check whether an SMS API is listed for the integrations you need. Monthly message limits and pay-as-you-go availability help distinguish usage options; free-plan details and paid-from pricing add cost context. ClickSend SMS API, Bandwidth Messaging API, and Clickatell SMS API are among the services to assess. Weigh these listed features against expected message volume and the interactions your workflow needs to support.
76 transactional SMS software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
76ranked
7free plans on this page
$0.01/molowest paid tier
7 Oct 2026last checked
Input list Transactional SMS Software 25 channels on this page · 58 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromPay-as-you-goSMS APIDelivery statusWebhooksTwo-way messagingMonthly message limit Spec sheet Score
01 ClickSend SMS API Free planNoPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limitnot stated 6/8spec lines stated 7.3
02 Textmagic Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 7.3
03 Bandwidth Messaging API Free planNoPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limitnot stated 6/8spec lines stated 7.2
04 Clickatell SMS API Free plannot statedPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 0/8spec lines stated 7.0
05 Mailchimp Free planYesPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 7.0
06 Infobip SMS API Free plannot statedPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 0/8spec lines stated 6.9
07 MoceanAPI Free planNoPaid from$3/moPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 2/8spec lines stated 6.9
08 Vonage SMS API Free planNoPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limitnot stated 6/8spec lines stated 6.9
09 Messente Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.8
10 Plivo SMS API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.8
11 Telnyx SMS API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.8
12 BulkGate Free planNoPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limitnot stated 6/8spec lines stated 6.7
13 MessageFlow SMS API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limit0 messages/mo 6/8spec lines stated 6.7
14 SMSAPI Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingYesMonthly message limitnot stated 2/8spec lines stated 6.7
15 Telnyx Text-to-Speech API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.7
16 Gupshup Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.6
17 MSG91 Free plannot statedPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 0/8spec lines stated 6.6
18 Routee SMS API Free plannot statedPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksYesTwo-way messagingYesMonthly message limitnot stated 5/8spec lines stated 6.6
19 Twilio Programmable Messaging Free planNoPaid from$1.15/moPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 2/8spec lines stated 6.6
20 Bird Verify Free plannot statedPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 0/8spec lines stated 6.5
21 CM.com Business Messaging API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.5
22 Netgsm Free planNoPaid fromnot statedPay-as-you-goYesSMS APIYesDelivery statusYesWebhooksnot statedTwo-way messagingYesMonthly message limitnot stated 5/8spec lines stated 6.5
23 SMSGlobal API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.5
24 smsmode RCS API Free planNoPaid fromnot statedPay-as-you-gonot statedSMS APInot statedDelivery statusnot statedWebhooksnot statedTwo-way messagingYesMonthly message limitnot stated 2/8spec lines stated 6.5
25 Conexteo Free plannot statedPaid fromnot statedPay-as-you-gonot statedSMS APIYesDelivery statusnot statedWebhooksnot statedTwo-way messagingnot statedMonthly message limitnot stated 1/8spec lines stated 6.4
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Pay-as-you-go | SMS API |
|---|---|---|---|---|---|---|---|---|
| 1 | ClickSend SMS API | 7.3 | No | — | No | — | Yes | Yes |
| 2 | Textmagic | 7.3 | No | $0.05/mo | No | — | — | — |
| 3 | Bandwidth Messaging API | 7.2 | No | — | No | — | Yes | Yes |
| 4 | Clickatell SMS API | 7.0 | Free plan | Free | — | — | — | — |
| 5 | Mailchimp | 7.0 | Free plan | Free | Yes | — | — | — |
| 6 | Infobip SMS API | 6.9 | Free plan | Free | — | — | — | — |
| 7 | MoceanAPI | 6.9 | No | — | No | 3 /mo | — | — |
| 8 | Vonage SMS API | 6.9 | No | — | No | — | Yes | Yes |
| 9 | Messente | 6.8 | Free plan | — | No | — | — | — |
| 10 | Plivo SMS API | 6.8 | No | $0.01/mo | No | — | — | — |
| 11 | Telnyx SMS API | 6.8 | No | $500/mo | No | — | — | — |
| 12 | BulkGate | 6.7 | No | — | No | — | Yes | Yes |
| 13 | MessageFlow SMS API | 6.7 | No | — | No | — | — | Yes |
| 14 | SMSAPI | 6.7 | No | — | No | — | — | — |
| 15 | Telnyx Text-to-Speech API | 6.7 | Free plan | $500/mo | No | — | — | — |
| 16 | Gupshup | 6.6 | Free plan | Free | No | — | — | — |
| 17 | MSG91 | 6.6 | No | — | — | — | — | — |
| 18 | Routee SMS API | 6.6 | No | — | — | — | Yes | Yes |
| 19 | Twilio Programmable Messaging | 6.6 | No | — | No | 1.15 /mo | — | — |
| 20 | Bird Verify | 6.5 | Free plan | Free | — | — | — | — |
| 21 | CM.com Business Messaging API | 6.5 | No | $58/mo | No | — | — | — |
| 22 | Netgsm | 6.5 | No | — | No | — | Yes | Yes |
| 23 | SMSGlobal API | 6.5 | No | — | No | — | — | — |
| 24 | smsmode RCS API | 6.5 | No | €9/mo | No | — | — | — |
| 25 | Conexteo | 6.4 | No | €0.04/mo | — | — | — | Yes |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which transactional SMS software is ranked first on Specifiction?
ClickSend SMS API is ranked #1 of 76 with a score of 7.3. Textmagic is second and Bandwidth Messaging API third.
How many of these have a free plan?
7 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Plivo SMS API has the lowest first paid tier we found: $0.01/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.
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