Texts and email,
in one place.
Postscript is an SMS specialist for US and Canadian Shopify brands, with low per-message rates. SmartyTap gives you email and text marketing together, with replies, chat and calls in one inbox.Email and texts. One tool.
Self-serve software or help with setup and migration.
Side by side
See exactly what you get with each one.
Who each one is best for. Choose Postscript if you sell in the US or Canada and want an SMS-only specialist with low per-message rates and AI-driven one-to-one texting. Choose SmartyTap if you want email and text marketing together at a published price, with replies, chat and calls in one inbox.
Checked October 16, 2026. Postscript facts come from Postscript pricing and the Postscript App Store listing. “Not listed” means those pages didn’t name the feature when we checked, not that Postscript can’t do it.
| Feature | Postscript | Chargezen |
|---|---|---|
| Text marketing SMS and MMS campaigns | Included | Included |
| Email marketing Campaigns and automations | Waitlist | Included |
| Popups and forms Grow your list | Included | Included |
| Automated flows Welcome, cart and win-back | Included | Included |
| Segments Send to the right people | Included | Included |
| A/B testing Test message variations | Included | Included |
| Two-way text replies Answer customers who reply | Included | Included |
| Live chat and calls Website chat and phone in the same inbox | Not listed | Included |
Postscript
- Text marketing
- Included
- Email marketing
- Waitlist
- Popups and forms
- Included
- Automated flows
- Included
- Segments
- Included
- A/B testing
- Included
- Two-way text replies
- Included
- Live chat and calls
- Not listed
Chargezen
- Text marketing
- Included
- Email marketing
- Included
- Popups and forms
- Included
- Automated flows
- Included
- Segments
- Included
- A/B testing
- Included
- Two-way text replies
- Included
- Live chat and calls
- Included
What you’d really pay
Postscript bills a plan fee plus each message. SmartyTap includes emails and text credits each month.
Postscript
- Starter
- $0/mo, $49 monthly minimum, $0.009/SMS
- Growth
- $100/mo + $0.008/SMS
- Professional
- $500/mo + $0.007/SMS
- Carrier fees
- About $0.0033 per SMS on top
Estimated Annual Cost
Depends on messages
Per-message rates apply to the US and Canada. MMS costs more. Email is not available yet. Postscript pricing, checked October 16, 2026.
Chargezen
- SmartyTap Pro, annual billing
- $1,990/yr
- Included each month
- 25,000 contacts, 250,000 emails, 2,500 text credits
- 250,000 a month included
- Inbox with chat and calls
- Included
Annual Cost
$1,990/year + usage
SmartyTap Pro is $1,990 billed annually or $199/month, with 25,000 contacts, 250,000 emails and 2,500 text credits a month. Starter is $20/month with 2,500 contacts, 25,000 emails and 250 text credits. Compare the allowances with your expected usage. Chargezen pricing.
Plan your move from Postscript
Check your data, billing dates and launch plan before you switch.
Talk through your move- 01
Export your subscribers
Export text subscribers with their consent records.
- 02
Rebuild your flows
Recreate welcome, cart and win-back messages, and add email to them.
- 03
Set up your inbox
Connect chat and calls so replies land in one place.
- 04
Go live
Send your first campaigns and answer replies from the same inbox.
Why brands switch to Chargezen
Unified Platform
Run AI agents, texts and email, upsells, creators and subscriptions from one place.
AI-Powered
AI agents answer customers, follow up and handle everyday busywork for your team.
Clear Pricing
See prices and usage costs, billed monthly or yearly.
Ready to switch from Postscript?
See the products, prices and setup help that fit your brand.
Common questions
Postscript Starter has no plan fee but a $49 monthly minimum and $0.009 per SMS; Growth is $100/month plus $0.008 per SMS and Professional $500/month plus $0.007, with carrier fees on top (checked October 16, 2026). SmartyTap Pro is $199/month with 25,000 contacts, 250,000 emails and 2,500 text credits a month.
Not yet. On October 16, 2026, Postscript’s pricing page offered email through a waitlist. SmartyTap includes email and texts.
