Omnisend and Postscript are SMS marketing platforms used by ecommerce brands. Omnisend is built to run email and SMS together for a connected store. Postscript is built around SMS as a revenue channel for Shopify brands. Small stores wanting one messaging tool suit Omnisend, while Shopify merchants treating texting as its own channel suit Postscript.
by Omnisend
Pricing: Free for 250 contacts and 500 emails a month; Standard $16/mo at 500 contacts ($132 at 10,000), Pro $59/mo up to 2,500 contacts ($150 at 10,000) with SMS credits from $0.007 a message.
Omnisend is email and SMS marketing for ecommerce stores with automation, popups and lifecycle segments, a free plan and a free migration service.
by Postscript
Pricing: Starter $0 platform fee with a $49/mo minimum spend, from $0.009/SMS; Growth $100/mo; Professional $500/mo; Enterprise on request. 30-day trial, $100 credit.
Postscript is SMS and RCS marketing for Shopify stores: campaigns, automation flows, a shared reply inbox and per-message billing.
SMS Marketing Software features side-by-side
Free for 250 contacts and 500 emails a month; Standard $16/mo at 500 contacts ($132 at 10,000), Pro $59/mo up to 2,500 contacts ($150 at 10,000) with SMS credits from $0.007 a message.
Starter $0 platform fee with a $49/mo minimum spend, from $0.009/SMS; Growth $100/mo; Professional $500/mo; Enterprise on request. 30-day trial, $100 credit.
Choose Omnisend if you want email and text messages sent from one automation setup for your store. Choose Postscript if you run texting as a main revenue channel for a Shopify store. Omnisend has a free plan and paid monthly plans, with the largest lists quoted. Postscript charges a monthly platform fee plus per-message costs, with larger plans quoted.
A store owner who already sends email often wants texts in the same flows. Omnisend puts email, SMS and push in one automation canvas. It also allows many team seats with roles, without paying per user. Its free migration service helps merchants move from another provider. The limit some users report is that its reports and analytics feel shallow for their needs.
A brand that sees SMS as its own channel will look at Postscript first. Postscript collects replies in a team inbox so staff can respond to individual subscribers. It also sends RCS messages and strips landline and invalid numbers before a send. Its focus is the Shopify integration, so merchants on other platforms set up a software kit on their own. Postscript sits beside the email platform instead of replacing it.
Omnisend's users praise the email builder and automations because a team can configure them without technical skill. Support also draws praise for being responsive. Reviewers also note that the editor and templates offer limited flexibility. Costs grow for small businesses as SMS credits and list sizes rise. Postscript's reviewers like how quickly campaigns and flows go live. They find it competitively priced for what it does and praise its personal support.
Omnisend describes a pet accessories brand that sells across several European markets and runs welcome, cart and lead capture automations in local languages. The brand's revenue from Omnisend grew sharply over several years, and automated flows brought in more than half of it. Postscript tells of a sports nutrition brand that switched away from a different SMS product to get better analytics. On Postscript, that customer grew its texting around community rather than discounts, and it earned substantial SMS revenue within its first months.
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