Welcome series, trial nudges and win-back emails, written for your app by AI and sent from your own domain. From $19 a month, where others charge $49 to $149.
Free up to 1,000 emailsNo card to startYour own domain
In 1839 a letter from London to Edinburgh cost more than a shilling, paid by whoever received it. On 10 January 1840 it cost one penny, to anywhere in Britain. Email automation is still priced like 1839: $49 to $149 a month, every month. PennyPost is the penny.
k7f2._domainkeyVerifiedq3m9._domainkeyVerified_dmarcVerifiedmail.invoicely.comVerifiedPaste the records we give you into your DNS. Your emails come from your own address, signed and verified, so they reach the inbox.
Enter your website and a few short answers. You get a complete workflow with every email written, timed and linked to your pages.
One HTTP call when something happens in your app. PennyPost sends the right email at the right time, and stops once the person does the thing.
Add your website and say what you sell. The builder plans the emails and the waits between them, writes each message from facts on your site, and puts it on the canvas as a draft. Nothing sends until you publish.
Hi Sam,
Thanks for trying Invoicely. Your first invoice takes three steps: add a client, add a line, press send.
Once it's out, Invoicely tells you when your client opens it and reminds them if they pay late, so you don't have to.
Send my first invoiceMaya
To run it, your app sends trial_started and adds the tag activated after someone's first invoice.
Custom fields, tags from your app and email activity. Send to exactly the people who should hear it.
Merge any contact field into any email. The fallback means nobody ever gets "Hi ,".
Opens, clicks and drop-off for each email, so you know which one to rewrite next.
One-off sends with scheduling, right next to your automations, to the same contacts.
New accounts warm up over two weeks, and bounces and complaints are handled for you.
Separate contacts, domains and workflows for every product you run. Up to 10.
Prices from loops.so/pricing and sendy.co, checked 14 October 2026. Mailchimp's price for 5,000 contacts on Standard comes from independent 2026 reviews and varies by region. Check current prices before you decide.
No card needed
Billed monthly, cancel any time
Something not covered here? Write to us. The founder reads every email.
Yes. Free covers 500 contacts and 1,000 emails a month, with 3 AI workflow builds. You don't need a card to start, and you can move to a paid plan whenever you outgrow it.
Campaigns pause and workflows wait in place until the 1st of next month, so nothing is lost or skipped. Upgrade at any point and sending picks up right away.
No. PennyPost handles the sending for you. You only need a domain you own, so your emails come from your own address, and we walk you through the DNS records.
It reads your public website and your answers to six short questions: what you sell, who signs up, and the one action that makes people stay, among others. It only uses facts it finds there, and every email arrives as a draft for you to edit.
No. PennyPost is for people who signed up to hear from you. Imported lists are checked for bought or scraped addresses, and accounts with high bounce or complaint rates are paused for review. That's what keeps everyone's email out of spam.
We price by the emails you send, not by the size of your list. You pay for the sending you use and the AI that writes your emails, not for every contact you collect.
Yes. Monthly plans stop at the end of the month you cancel in, and yearly plans at the end of the year. Your account drops to the free plan instead of being deleted.
Set it up in an afternoon. The right email goes out every time someone signs up.