At how many SMS a month does each published Postscript plan become the cheapest?
Of Postscript's three plans with published prices, Growth is the cheapest from 100,000 to 400,000 SMS a month on its listed rates for the US and Canada, and costs $2,100 at 250,000 SMS, computed by Deploi. Updated October 19, 2026.
By Martin DejnickiUpdated Data through October 18, 2026
Short answer
Of the three Postscript plans with published prices, each is the cheapest in a band of monthly volume: Starter below 100,000 SMS, Growth from 100,000 to 400,000 and Professional above 400,000, computed by Deploi from Postscript's SMS pricing captured October 18, 2026. At 250,000 SMS Growth costs $2,100 and Starter and Professional $2,250 each. Carrier fees and MMS are excluded.
At 250,000 SMS a month, Postscript Growth costs $2,100, $150 less than Starter or Professional
Monthly cost of each Postscript plan at the SMS volume chosen, 250,000 by default, USD, rates for the US and Canada; plan fee plus per-SMS rate, computed by Deploi
Monthly cost of each Postscript plan at 100,000 SMS a month
At 100,000 SMS a month, Starter costs $900, Growth $900 and Professional $1,200, so the cheapest plan costs $900.
Showing: SMS a month: 100,000 SMS. Reset
Cheapest Postscript plan cost by monthly SMS volume
- 10,000 SMS
- $90
- 100,000 SMS
- $900
- 250,000 SMS
- $2,100
- 400,000 SMS
- $3,300
- 500,000 SMS
- $4,000
- How this is calculated: Each plan's monthly cost is its monthly fee plus the larger of its minimum monthly spend and the SMS volume times its per-SMS rate: Starter, no fee, a $49 minimum and $0.009 per SMS; Growth, $100 a month and $0.008; Professional, $500 a month and $0.007. Carrier fees, MMS messages and taxes are left out, and Enterprise has custom pricing. Rates come from Postscript's SMS and RCS pricing for the US and Canada, captured October 18, 2026; computed by Deploi.
- Costs are computed by Deploi from Postscript's published monthly fees, minimum spend and per-SMS rates, which Postscript lists for the US and Canada; its Enterprise plan has custom pricing and is not shown.
- Among the three plans with published rates, Starter is cheapest below 100,000 SMS a month, Growth from 100,000 to 400,000, and Professional above 400,000, computed by Deploi; Postscript also offers Enterprise and contract pricing.
- Carrier fees, which are listed separately, and MMS messages are not included.
- Klaviyo SMS is not drawn: Klaviyo prices SMS by monthly send tiers, and Deploi did not convert them to a per-SMS rate.
Source: Postscript, SMS & RCS pricing; Klaviyo, Pricing (United States, USD); both captured October 18, 2026; costs computed by Deploi. Read on .
What this means for your decision
- Choosing a Postscript plan? Match your monthly SMS volume to the bands computed by Deploi from Postscript's listed rates for the US and Canada, captured October 18, 2026: of the three plans with published prices, Starter is cheapest below 100,000 SMS, Growth from 100,000 to 400,000 and Professional above 400,000. The Enterprise plan has custom pricing.
- Deciding when to move up a tier? Move when your volume stays past the break-even. Close to it the saving is small; even at 250,000 SMS, Growth saves $150 a month over Starter or Professional.
- Comparing with Klaviyo SMS? Klaviyo's captured pricing lists a monthly price per SMS send tier but not how those sends convert to US messages, so this page states no Klaviyo cost and does not say which is cheaper. Price your volume on Klaviyo's own pricing page.
- Budgeting the full SMS bill? The costs cover the plan fee, the minimum spend and the per-SMS rate only. Carrier fees, which Postscript lists separately, MMS messages and taxes come on top, so add them before comparing with your current bill.
- Setting up SMS on a Shopify store? Deploi builds ecommerce sites. Contact Deploi before you commit to a plan.
At what volume does each published Postscript plan become the cheapest?
Of the three Postscript plans with published prices, Starter is cheapest below 100,000 SMS a month, Growth from 100,000 to 400,000 and Professional above 400,000, computed by Deploi from Postscript's published fees and per-SMS rates for the US and Canada, captured October 18, 2026. At exactly 100,000 SMS Starter and Growth cost the same, and at exactly 400,000 SMS Growth and Professional cost the same.
Enter your monthly SMS volume, from 1,000 to 1,000,000, to see what each Postscript plan with published prices costs and which costs least; the cheapest plan is highlighted. The default is 250,000 SMS. At 100,000 and 400,000 SMS two plans tie, so both bars are highlighted.
What does each Postscript plan with published prices charge?
Postscript's Starter plan has no monthly fee, a $49 minimum monthly spend and $0.009 per SMS; Growth charges $100 a month and $0.008 per SMS; Professional charges $500 a month and $0.007 per SMS, according to Postscript's SMS and RCS pricing captured October 18, 2026. MMS costs $0.045, $0.03 and $0.024 per message on the same plans.
Postscript's Enterprise plan has custom pricing and is not priced here. The break-even volume is the plan fee difference divided by the per-SMS rate difference, computed by Deploi. From Starter to Growth that is $100 divided by $0.001, or 100,000 SMS; from Growth to Professional, $400 divided by $0.001, or 400,000 SMS.
What does Postscript cost at 250,000 SMS a month?
At 250,000 SMS a month Postscript Growth costs $2,100, which is a $100 fee plus 250,000 SMS at $0.008, while Starter and Professional cost $2,250 each, computed by Deploi from Postscript's listed rates for the US and Canada, captured October 18, 2026. Growth saves $150 a month over either, before carrier fees and MMS.
Starter at this volume is 250,000 SMS at $0.009, which is above its $49 minimum spend. Professional is a $500 fee plus 250,000 SMS at $0.007.
What does Postscript cost at other volumes?
At 10,000 SMS a month Starter costs $90, Growth $180 and Professional $570; at 500,000 SMS Starter costs $4,500, Growth $4,100 and Professional $4,000, computed by Deploi from Postscript's listed rates for the US and Canada, captured October 18, 2026. Starter is cheapest at the low end and Professional at the high end, and the order reverses across the range.
Three more volumes from the chart, computed by Deploi:
- 50,000 SMS: Starter $450, Growth $500, Professional $850.
- 150,000 SMS: Starter $1,350, Growth $1,300, Professional $1,550.
- 350,000 SMS: Starter $3,150, Growth $2,900, Professional $2,950.
How does Klaviyo SMS compare at the same volume?
Deploi states no Klaviyo SMS cost at any volume, so the two are not compared. Klaviyo's US pricing data, captured October 18, 2026, lists a monthly price for each SMS send tier but does not state how those sends convert to US messages, and Deploi does not divide a tier price by its sends.
Klaviyo is not drawn in the chart for the same reason. A cost comparison with Klaviyo needs Klaviyo's tier for your volume, taken from its pricing page.
What is not in these costs?
The costs exclude carrier fees, which Postscript lists separately, and MMS messages, and they use the listed rates, which Postscript gives for the US and Canada, from its SMS and RCS pricing captured October 18, 2026. Deploi computes each cost with the minimum-spend rule: the plan fee plus the larger of the minimum spend and the SMS rate times the monthly volume.
Other messaging costs, taxes and any change to Postscript's published prices after October 18, 2026 are not included.
The data
Each chart on this page is drawn from the numbers below. Units are in the column headers.
| SMS a month (SMS per month) | Plan | Monthly cost (USD per month) | Cheapest at this volume |
|---|---|---|---|
| 1,000 | Starter | 49 | yes |
| 1,000 | Growth | 108 | no |
| 1,000 | Professional | 507 | no |
| 1,500 | Starter | 49 | yes |
| 1,500 | Growth | 112 | no |
| 1,500 | Professional | 511 | no |
| 2,000 | Starter | 49 | yes |
| 2,000 | Growth | 116 | no |
| 2,000 | Professional | 514 | no |
| 2,500 | Starter | 49 | yes |
| 2,500 | Growth | 120 | no |
| 2,500 | Professional | 518 | no |
| 3,000 | Starter | 49 | yes |
| 3,000 | Growth | 124 | no |
| 3,000 | Professional | 521 | no |
| 4,000 | Starter | 49 | yes |
| 4,000 | Growth | 132 | no |
| 4,000 | Professional | 528 | no |
| 5,000 | Starter | 49 | yes |
| 5,000 | Growth | 140 | no |
| 5,000 | Professional | 535 | no |
| 6,000 | Starter | 54 | yes |
| 6,000 | Growth | 148 | no |
| 6,000 | Professional | 542 | no |
| 7,500 | Starter | 68 | yes |
| 7,500 | Growth | 160 | no |
| 7,500 | Professional | 553 | no |
| 10,000 | Starter | 90 | yes |
| 10,000 | Growth | 180 | no |
| 10,000 | Professional | 570 | no |
| 15,000 | Starter | 135 | yes |
| 15,000 | Growth | 220 | no |
| 15,000 | Professional | 605 | no |
| 20,000 | Starter | 180 | yes |
| 20,000 | Growth | 260 | no |
| 20,000 | Professional | 640 | no |
| 25,000 | Starter | 225 | yes |
| 25,000 | Growth | 300 | no |
| 25,000 | Professional | 675 | no |
| 30,000 | Starter | 270 | yes |
| 30,000 | Growth | 340 | no |
| 30,000 | Professional | 710 | no |
| 40,000 | Starter | 360 | yes |
| 40,000 | Growth | 420 | no |
| 40,000 | Professional | 780 | no |
| 50,000 | Starter | 450 | yes |
| 50,000 | Growth | 500 | no |
| 50,000 | Professional | 850 | no |
| 60,000 | Starter | 540 | yes |
| 60,000 | Growth | 580 | no |
| 60,000 | Professional | 920 | no |
| 75,000 | Starter | 675 | yes |
| 75,000 | Growth | 700 | no |
| 75,000 | Professional | 1,025 | no |
| 100,000 | Starter | 900 | yes |
| 100,000 | Growth | 900 | yes |
| 100,000 | Professional | 1,200 | no |
| 150,000 | Starter | 1,350 | no |
| 150,000 | Growth | 1,300 | yes |
| 150,000 | Professional | 1,550 | no |
| 200,000 | Starter | 1,800 | no |
| 200,000 | Growth | 1,700 | yes |
| 200,000 | Professional | 1,900 | no |
| 250,000 | Starter | 2,250 | no |
| 250,000 | Growth | 2,100 | yes |
| 250,000 | Professional | 2,250 | no |
| 300,000 | Starter | 2,700 | no |
| 300,000 | Growth | 2,500 | yes |
| 300,000 | Professional | 2,600 | no |
| 350,000 | Starter | 3,150 | no |
| 350,000 | Growth | 2,900 | yes |
| 350,000 | Professional | 2,950 | no |
| 400,000 | Starter | 3,600 | no |
| 400,000 | Growth | 3,300 | yes |
| 400,000 | Professional | 3,300 | yes |
| 500,000 | Starter | 4,500 | no |
| 500,000 | Growth | 4,100 | no |
| 500,000 | Professional | 4,000 | yes |
| 600,000 | Starter | 5,400 | no |
| 600,000 | Growth | 4,900 | no |
| 600,000 | Professional | 4,700 | yes |
| 750,000 | Starter | 6,750 | no |
| 750,000 | Growth | 6,100 | no |
| 750,000 | Professional | 5,750 | yes |
| 1,000,000 | Starter | 9,000 | no |
| 1,000,000 | Growth | 8,100 | no |
| 1,000,000 | Professional | 7,500 | yes |
Download Postscript SMS plans and Klaviyo SMS: published prices and computed monthly costs as CSV · All 12 columns on the dataset page
Methodology
Reading the chart: At 250,000 SMS a month, Postscript Growth costs $2,100, $150 less than Starter or Professional
- How this is calculated: Each plan's monthly cost is its monthly fee plus the larger of its minimum monthly spend and the SMS volume times its per-SMS rate: Starter, no fee, a $49 minimum and $0.009 per SMS; Growth, $100 a month and $0.008; Professional, $500 a month and $0.007. Carrier fees, MMS messages and taxes are left out, and Enterprise has custom pricing. Rates come from Postscript's SMS and RCS pricing for the US and Canada, captured October 18, 2026; computed by Deploi.
- Costs are computed by Deploi from Postscript's published monthly fees, minimum spend and per-SMS rates, which Postscript lists for the US and Canada; its Enterprise plan has custom pricing and is not shown.
- Among the three plans with published rates, Starter is cheapest below 100,000 SMS a month, Growth from 100,000 to 400,000, and Professional above 400,000, computed by Deploi; Postscript also offers Enterprise and contract pricing.
- Carrier fees, which are listed separately, and MMS messages are not included.
- Klaviyo SMS is not drawn: Klaviyo prices SMS by monthly send tiers, and Deploi did not convert them to a per-SMS rate.
Caveats: Postscript SMS plans and Klaviyo SMS: published prices and computed monthly costs
- Costs are computed by Deploi: the plan fee plus the larger of the minimum spend and the SMS rate times the monthly volume. Where no minimum is stated, none is applied.
- Break-even volumes are the plan fee difference divided by the per-SMS rate difference between a plan and the next one, computed by Deploi.
- Carrier fees, which Postscript lists separately, and MMS messages are not included. Postscript states that its listed rates are for the US (50 states) and Canada. Its Enterprise plan has custom pricing and is not priced here.
- Klaviyo's captured pricing data lists a monthly price for each SMS send tier, and the data does not state how those sends convert to US messages, so Deploi does not compute a Klaviyo cost at a given volume or divide a tier price by its sends.
- Prices change. Every value is dated to the capture on October 18, 2026.
Deploi's charts and compilation are licensed CC BY 4.0. The underlying facts belong to their sources, which are named on every page. How Deploi Shopify Data works.
Sources
Tier A sources are primary documents: filings, official releases and official price pages. How sources are ranked.
- Tier AKlaviyo Pricing (United States, USD)
Klaviyo · HTML · Read on
- Tier AKlaviyo pricing page data bundle, US (JavaScript: email and SMS plan tiers)
Klaviyo · TEXT · Read on
- Tier APostscript SMS & RCS pricing
Postscript · HTML · Read on
Cite and reuse
Deploi's charts and compilation are licensed CC BY 4.0. The underlying facts belong to their sources, which are named on every page.
APA
Deploi. (2026). At how many SMS a month does each published Postscript plan become the cheapest? [Web page]. https://deploi.ca/shopify/data/postscript-sms-plan-break-even Retrieved October 19, 2026.
BibTeX
@misc{deploi_postscript_sms_plan_break_even_2026,
author = {{Deploi}},
title = {At how many SMS a month does each published Postscript plan become the cheapest?},
year = {2026},
url = {https://deploi.ca/shopify/data/postscript-sms-plan-break-even},
note = {Accessed 2026-10-19}
}Embed this chart
Embed code
<iframe src="https://deploi.ca/embed/shopify/data/postscript-cost-by-sms-volume" title="At 250,000 SMS a month, Postscript Growth costs $2,100, $150 less than Starter or Professional" loading="lazy" style="width:100%;height:680px;border:0"></iframe> <p style="font:12px/1.4 Arial,sans-serif;margin:4px 0 0">Source: <a href="https://deploi.ca/shopify/data/postscript-sms-plan-break-even#chart-postscript-cost-by-sms-volume">Deploi, At 250,000 SMS a month, Postscript Growth costs $2,100, $150 less than Starter or Professional</a></p>
Keep the credit line under the embed. It is the license condition.
Questions
At how many SMS does Postscript Growth become cheaper than Starter?
At 100,000 SMS a month on Postscript's listed rates for the US and Canada, captured October 18, 2026. Below that Starter costs less; above it Growth's $0.008 per SMS, against $0.009 on Starter, saves more than its $100 monthly fee. The break-even is computed by Deploi.
What does Postscript cost for 250,000 SMS a month?
Growth costs $2,100, and Starter and Professional cost $2,250 each, computed by Deploi from Postscript's listed rates for the US and Canada, captured October 18, 2026. Carrier fees and MMS messages are not included.
When should I move to Postscript Professional?
Above 400,000 SMS a month, where its $0.007 per SMS, against $0.008 on Growth, saves more than the extra $400 of its $500 monthly fee, computed by Deploi from Postscript's pricing captured October 18, 2026. At 500,000 SMS Professional costs $4,000 against $4,100 for Growth.
Does Klaviyo SMS cost less than Postscript?
The data cannot say. Klaviyo's US pricing data, captured October 18, 2026, lists a monthly price for each SMS send tier but does not state how those sends convert to US messages, so Deploi computes no Klaviyo cost to compare with Postscript's.
Are carrier fees included in these costs?
No. Postscript lists carrier fees separately, and the costs on this page cover the plan fee, the minimum spend and the per-SMS rate only, for the rates Postscript lists for the US and Canada, captured October 18, 2026. MMS messages are also excluded.
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Changes
- · Postscript SMS plans and Klaviyo SMS: published prices and computed monthly costs
First release. Four plan rows read from Postscript's and Klaviyo's pricing pages on October 18, 2026, and a calculator grid computed by Deploi: 87 rows, 29 SMS volumes from 1,000 to 1,000,000 a month for each of the 3 Postscript plans, with the rowType column.