For marketers
Your CMO’s deadline. Your deadline now .
The CMO needs three variants of the welcome email by EOD. Postern makes that realistic — and quiet — instead of a 2 a.m. panic with three browser tabs of half-built templates.
14-day Pro trial, no credit card. Cancel before day 14, never charged.
You’re a marketer. Not a designer.
Most builders make you click forty-seven times to change a font. They assume HTML on a page that’s supposed to be drag-and-drop. They force template choices that look generic because the builder is generic.
Postern reverses the workflow. Tell it what you want. It handles the design. You focus on the message — the part nobody else can do for you.
What you get
Three things that compound, fast.
12 minutes, not 2 hours.
A 30-second AI draft plus quick edits beats a blank canvas every time. The job that owned your morning starts looking like a coffee-break decision.
Your brand on every email.
Upload colours and fonts once. The brand library applies to every new email. The “that doesn’t look like us” review note disappears.
Personalisation without code.
VIP gets the premium offer. New subscriber gets the onboarding. Drag blocks into branches. No conditional syntax, no broken merge tags on export.
Use cases
Six campaigns Postern was built for.
Welcome series
Three emails, one canvas. Postern handles the variants per audience segment so day-1 / day-3 / day-7 share the same brand without copy-pasting.
Promotional campaigns
Tell the AI the offer in plain English. It drafts headline + body + CTA in your tone. You tweak, send to the test slice, and ship.
Abandoned-cart reminders
A canvas that already accounts for product variants. Pull merge tags from your ESP, AI writes the urgency line in three lengths so you can A/B without rebuilding.
Win-back & re-engagement
Different tone for a 90-day-quiet subscriber than for a 7-day one. Postern tells each branch how to feel without doubling your template count.
Newsletter cadence
Modular sections that survive being shuffled. AI rewrites the intro to match this week’s feature without breaking the layout below it.
Event invites
Localised dates, time-zone math, a calendar block, and a CTA the AI knows to keep above the fold — without you reading the spec for the calendar block.
Time on the clock
A campaign in numbers.
One promotional email, start to send-ready test, no surprises in either column.
Traditional builder
≈ 2 hours, 5 minutes
- Pick + customise template35 min
- Write headline + body25 min
- Adjust copy after CMO review25 min
- Tweak layout for mobile20 min
- Set up A/B variants15 min
- Test send + QA in three clients15 min
Postern
≈ 30 minutes
- Pick template + describe campaign to AI8 min
- Refine tone via AI chat5 min
- CMO change → AI applies the diff3 min
- Mobile preview (tablet preview, too)2 min
- AI drafts the second variant5 min
- Test send + QA in three clients7 min
Send from where you already send
Your ESP isn’t going anywhere.
Design in Postern. Export to your stack. We are not asking you to migrate.
- Mailchimp
- Klaviyo
- Brevo (Sendinblue)
- SendPulse
- HubSpot
- Customer.io
- ActiveCampaign
- Constant Contact
Plus generic HTML and MJML for anything not on the list. Webhooks for everything else.
Coming soon
We’ll publish customer stories once our first cohort has shipped real campaigns. Reading a fake testimonial helps no one — least of all the marketer being asked to take Postern to their team.
Want to be one of the first cohort? Email us — we’re hand-onboarding the early teams.
Ship the campaign before lunch.
Free tier is enough to design your next email start-to-finish. Upgrade only when the generation cap starts costing you minutes. The pricing is plain English.