Tariff 1
Free
£0 a month
3,000 emails a month, forever. Enough to launch on, and we take no card.
- Emails a month3,000
- Sending domains1
- API and SMTP relayincluded
- Searchable history3 days
- Card details takennone
Transactional email · One API call
Every email franked, sorted and delivered.
Franked is a sending API for the email your product writes: receipts, magic links, digests, alerts. One POST and it goes first class. SPF, DKIM and the awkward conversations with Gmail are our job; you write the message, the post room does the rest.
- Delivered, last 30 days
- 214M
- Median time to inbox
- 1.8s
- Inbox placement
- 99.2%
Out tray
msg_9f2kq7ax Receipt [email protected] → [email protected]
Handed to Gmail in 1.4 s. SPF pass, DKIM pass, TLS 1.3. Opened at 09:43.
msg_4hd8s2wn Magic link [email protected] → [email protected]
Handed to Outlook in 0.9 s. SPF pass, DKIM pass. The link was opened 41 seconds after send.
msg_7pm3v9ke Digest [email protected] → [email protected]
One of 84,213 in the morning batch. Handed to Yahoo in 2.1 s. Opens are tallied on the digest dashboard.
msg_2rx6b4tj Alert [email protected] → [email protected]
Priority lane. Handed to Google Workspace in 0.6 s. Acknowledged by the on-call engineer at 09:43.
Dispatched while you read: 0
Part I · This morning
Just sent
Three letters from this morning's traffic, pinned as they cleared the sorting floor. It runs like this all day.
-
msg_8xw2p9td Receipt Order confirmed: 2 × walnut spice rack
[email protected] → [email protected]
Delivered to Gmail in 1.1 s
-
msg_3vk8n2qe Magic link Reset your Caldews password
[email protected] → [email protected]
Delivered to Outlook in 0.7 s
-
msg_6tq4r8jm Digest Your June statement is ready
[email protected] → [email protected]
One of 84,213 in the batch · median 2.1 s
Part II · The ledger
Where your email lands
Inbox placement by receiving provider, measured on seeded and live traffic over the last 30 days. Bars show share of volume, refreshed nightly.
- Gmail 96M sent 99.4%
- Outlook 61M sent 99.1%
- Apple Mail 32M sent 99.2%
- Yahoo 14M sent 98.7%
- Everywhere else 11M sent 97.9%
All providers, weighted by volume 99.2% inboxed · 214M delivered
Part III · Procedure
How it works
Three steps. The first two take ten minutes, once. The third happens a few hundred milliseconds after every call.
- Field 01 01
Verify your domain
Add two DNS records and press verify. Everything you send is signed with your own domain, so mailbox providers know it is really you.
TXT fk1._domainkeyv=DKIM1; p=MIGf…set
TXT @v=spf1 include:spf.franked.example ~allset
- Field 02 02
Make one call
POST the message and go back to your product. Retries, throttling and bounce handling are all on our side of the counter.
curl https://api.franked.example/v1/send \ -u :fk_live_9f2kq7ax \ -d from="[email protected]" \ -d to="[email protected]" \ -d subject="Your receipt (#41172)" - Field 03 03
Delivered, with a receipt
Every send returns a message-id, and every delivery posts a receipt to your webhook. If something bounces, you hear about it in plain English.
msg_9f2kq7ax delivered · gmail · 1.4 s spf pass · dkim pass · tls 1.3
Part IV · Fee schedule
Postage
Priced like stamps: pay for what you send. No seats, no platform fee, no surprises at renewal.
Tariff 2
Metered
50p per 1,000 emails
After your free 3,000 each month. A product sending 100,000 a month pays £48.50; volume rates start at one million.
- Everything in Freeincluded
- Sending domainsunlimited
- Delivery webhooksincluded
- Searchable history45 days
- Dedicated IPsfrom £45 a month
- Data residencyUK or EU
Prices exclude VAT. Volume discounts from one million emails a month; talk to the counter.
Part V · Questions
Asked often
What counts as transactional email?
Email your product sends to one person because of something they did: receipts, sign-in links, alerts, the digest they subscribed to. Bulk marketing belongs on a separate stream with its own reputation, and we will politely refuse it on this one.
How do you keep deliverability high?
We send from our own numbered IP ranges, warmed and watched around the clock, enforce SPF and DKIM on every domain, and hold feedback loops with the major providers. Bounces and complaints go straight onto your suppression list before the next send.
Do I need a dedicated IP?
Under about 500,000 emails a month, no: the shared pools are steadier because their volume never dips. Above that, a dedicated IP is worth having, and we warm it for you over two weeks before it carries anything that matters.
Which DNS records do I set?
Two TXT records: a DKIM key and an SPF include. A DMARC record and a custom return-path CNAME are optional but recommended. The verifier checks them when you press the button and re-checks nightly.
Where is my data held?
London and Dublin, and you can pin an account to either. Message content is held for your history window, 3 or 45 days, then only metadata remains: addresses, timestamps and delivery events.
What happens if my volume spikes?
The API never throttles you; the queue absorbs the spike and we smooth the rate out to each provider so your reputation is not spent in one afternoon. You pay the metered rate and nothing else.