A Nisdos project

Email that lives in your cloud, not ours.

Your domain, unlimited addresses, encrypted at rest — and the mail itself is written straight into storage you control: your S3, your R2, your WebDAV server, even a GitHub repo. We route, verify and encrypt. You own the data.

Start free See what you get
mx — inbound delivery
← MAIL FROM:<news@sender.com>
  spf=pass dkim=pass dmarc=pass
→ route  hello@yourdomain.com
→ encrypt  age(X25519) + zstd
→ PUT  s3://your-bucket/blobs/9f2c…e1
← 250 OK — stored in your storage,
        not on our disks

Your mail, in storage you already trust

Most providers store your mail on their infrastructure and ask you to trust them. We flip it: point a mailbox or a whole domain at storage you control, and that's where every message lives — content‑addressed, compressed, encrypted.

  • Amazon S3
  • Cloudflare R2
  • DigitalOcean Spaces
  • Backblaze B2
  • Wasabi
  • Storj
  • Scaleway
  • MinIO
  • Nextcloud
  • ownCloud
  • Synology
  • a GitHub repo

…or any other S3‑ or WebDAV‑compatible service — SwissDisk, Hetzner, Google Cloud, and more.

Data residency by construction: pick the bucket, pick the region, satisfy the mandate. Leaving? Your mail is already in your account.

Privacy, stated honestly

Encryption is a per‑mailbox choice, and we only claim what each tier actually delivers.

None

optional

Plaintext at rest, for maximum convenience and compatibility. Your call — some mailboxes just don't need more.

Server custody

default today

Encrypted at rest with per‑mailbox keys your storage provider never sees — your bucket holds only ciphertext, and even the credentials to it are sealed in our database. We hold the keys to operate your mailbox; we say so plainly.

Device custody

in beta

Keys generated in your browser and never sent anywhere. Enrolling erases our copy of the mailbox key — from that moment, not even we can read your stored mail. Webmail today; IMAP bridge and key recovery are on the way. The device key itself is a post‑quantum hybrid.

Sovereignty you can actually specify

“Where does my mail live?” is really three questions — and most providers answer none of them. We let you answer all three, then arrange storage to match.

Region

Where the bytes physically sit

Pick the datacenter country — Germany, Switzerland, the US, Singapore, or your own rack. Data residency is satisfied by construction, not by a promise in a policy page.

Jurisdiction

Whose laws can reach it

Region isn't jurisdiction. A US‑owned provider's EU region can still be compelled under the CLOUD Act. Choose storage held by a company incorporated where you want the law to stop.

Operator

Who holds the infrastructure

Down to the operating company: EU‑owned, Swiss‑owned, state‑owned, or a bucket in an account only you hold the keys to.

Have a residency or jurisdiction mandate? Tell us the requirement — we'll design the storage around it.

Talk to us about requirements
Unlimiteddomains
Unlimitedusers & aliases
Unlimitedstorage — because it's yours

Fair‑use terms apply.

What you get

No upsells, no per‑seat surprises. The core product is the product — built for developers, prosumers and small technical teams.

01

Your domain, done right

We take care of DNS records (MX, SPF, DMARC, DKIM). We verify them live for your mail. We monitor your domain reputation.

03

Encrypted at rest

Every message is compressed and encrypted with a per‑mailbox key before it touches storage. You have an option to transfer keys custody to yourself.

04

Webmail that respects you

HTML mail runs sandboxed behind three independent layers. Remote images are off until you opt in, tracking links are flagged, and your browser never talks to a sender's servers.

05

Search like you think

Full‑text search with the operators you already know — from:, has:attachment, newer:7d, in:anywhere — plus keyboard‑first navigation and labels that work like folders.

06

Built to never lose mail

The receiving edge is stateless: it confirms delivery only after your mailbox has the message. If anything is down, the sender's own queue retries — standard SMTP, no silent drops.

No bucket? We'll host your mail.

Bring your own storage and the bytes — and the storage bill — stay yours. Don't want to bother with buckets, keys and regions at all? Let us host it: unlimited domains, unlimited users, and the only things you pick are the volume and whether it stays in the EU. $2 per 25 GB per month.

Storage volume

Hosted storage

$2/mo $3/mo 25 GB of mail in the EU billed monthly billed $24 once a year — one invoice, less hassle billed $36 once a year — one invoice, less hassle $4/mo $6/mo 50 GB of mail in the EU billed monthly billed $48 once a year — one invoice, less hassle billed $72 once a year — one invoice, less hassle $6/mo $9/mo 75 GB of mail in the EU billed monthly billed $72 once a year — one invoice, less hassle billed $108 once a year — one invoice, less hassle $8/mo $12/mo 100 GB of mail in the EU billed monthly billed $96 once a year — one invoice, less hassle billed $144 once a year — one invoice, less hassle $10/mo $15/mo 125 GB of mail in the EU billed monthly billed $120 once a year — one invoice, less hassle billed $180 once a year — one invoice, less hassle $12/mo $18/mo 150 GB of mail in the EU billed monthly billed $144 once a year — one invoice, less hassle billed $216 once a year — one invoice, less hassle $14/mo $21/mo 175 GB of mail in the EU billed monthly billed $168 once a year — one invoice, less hassle billed $252 once a year — one invoice, less hassle $16/mo $24/mo 200 GB of mail in the EU billed monthly billed $192 once a year — one invoice, less hassle billed $288 once a year — one invoice, less hassle $18/mo $27/mo 225 GB of mail in the EU billed monthly billed $216 once a year — one invoice, less hassle billed $324 once a year — one invoice, less hassle $20/mo $30/mo 250 GB of mail in the EU billed monthly billed $240 once a year — one invoice, less hassle billed $360 once a year — one invoice, less hassle $22/mo $33/mo 275 GB of mail in the EU billed monthly billed $264 once a year — one invoice, less hassle billed $396 once a year — one invoice, less hassle $24/mo $36/mo 300 GB of mail in the EU billed monthly billed $288 once a year — one invoice, less hassle billed $432 once a year — one invoice, less hassle $26/mo $39/mo 325 GB of mail in the EU billed monthly billed $312 once a year — one invoice, less hassle billed $468 once a year — one invoice, less hassle $28/mo $42/mo 350 GB of mail in the EU billed monthly billed $336 once a year — one invoice, less hassle billed $504 once a year — one invoice, less hassle $30/mo $45/mo 375 GB of mail in the EU billed monthly billed $360 once a year — one invoice, less hassle billed $540 once a year — one invoice, less hassle $32/mo $48/mo 400 GB of mail in the EU billed monthly billed $384 once a year — one invoice, less hassle billed $576 once a year — one invoice, less hassle $34/mo $51/mo 425 GB of mail in the EU billed monthly billed $408 once a year — one invoice, less hassle billed $612 once a year — one invoice, less hassle $36/mo $54/mo 450 GB of mail in the EU billed monthly billed $432 once a year — one invoice, less hassle billed $648 once a year — one invoice, less hassle $38/mo $57/mo 475 GB of mail in the EU billed monthly billed $456 once a year — one invoice, less hassle billed $684 once a year — one invoice, less hassle $40/mo $60/mo 500 GB of mail in the EU billed monthly billed $480 once a year — one invoice, less hassle billed $720 once a year — one invoice, less hassle $42/mo $63/mo 525 GB of mail in the EU billed monthly billed $504 once a year — one invoice, less hassle billed $756 once a year — one invoice, less hassle $44/mo $66/mo 550 GB of mail in the EU billed monthly billed $528 once a year — one invoice, less hassle billed $792 once a year — one invoice, less hassle $46/mo $69/mo 575 GB of mail in the EU billed monthly billed $552 once a year — one invoice, less hassle billed $828 once a year — one invoice, less hassle $48/mo $72/mo 600 GB of mail in the EU billed monthly billed $576 once a year — one invoice, less hassle billed $864 once a year — one invoice, less hassle $50/mo $75/mo 625 GB of mail in the EU billed monthly billed $600 once a year — one invoice, less hassle billed $900 once a year — one invoice, less hassle $52/mo $78/mo 650 GB of mail in the EU billed monthly billed $624 once a year — one invoice, less hassle billed $936 once a year — one invoice, less hassle $54/mo $81/mo 675 GB of mail in the EU billed monthly billed $648 once a year — one invoice, less hassle billed $972 once a year — one invoice, less hassle $56/mo $84/mo 700 GB of mail in the EU billed monthly billed $672 once a year — one invoice, less hassle billed $1008 once a year — one invoice, less hassle $58/mo $87/mo 725 GB of mail in the EU billed monthly billed $696 once a year — one invoice, less hassle billed $1044 once a year — one invoice, less hassle $60/mo $90/mo 750 GB of mail in the EU billed monthly billed $720 once a year — one invoice, less hassle billed $1080 once a year — one invoice, less hassle $62/mo $93/mo 775 GB of mail in the EU billed monthly billed $744 once a year — one invoice, less hassle billed $1116 once a year — one invoice, less hassle $64/mo $96/mo 800 GB of mail in the EU billed monthly billed $768 once a year — one invoice, less hassle billed $1152 once a year — one invoice, less hassle $66/mo $99/mo 825 GB of mail in the EU billed monthly billed $792 once a year — one invoice, less hassle billed $1188 once a year — one invoice, less hassle $68/mo $102/mo 850 GB of mail in the EU billed monthly billed $816 once a year — one invoice, less hassle billed $1224 once a year — one invoice, less hassle $70/mo $105/mo 875 GB of mail in the EU billed monthly billed $840 once a year — one invoice, less hassle billed $1260 once a year — one invoice, less hassle $72/mo $108/mo 900 GB of mail in the EU billed monthly billed $864 once a year — one invoice, less hassle billed $1296 once a year — one invoice, less hassle $74/mo $111/mo 925 GB of mail in the EU billed monthly billed $888 once a year — one invoice, less hassle billed $1332 once a year — one invoice, less hassle $76/mo $114/mo 950 GB of mail in the EU billed monthly billed $912 once a year — one invoice, less hassle billed $1368 once a year — one invoice, less hassle $78/mo $117/mo 975 GB of mail in the EU billed monthly billed $936 once a year — one invoice, less hassle billed $1404 once a year — one invoice, less hassle $80/mo $120/mo 1 TB of mail in the EU billed monthly billed $960 once a year — one invoice, less hassle billed $1440 once a year — one invoice, less hassle

25 GB1 TB

Or jump to

Included at every volume

  • Storage on us. No bucket — no stress
  • Unlimited domains & users
  • Encrypted at rest, per‑mailbox keys
  • DNS setup, verification & reputation monitoring
  • Phishing analysis and tracking blocker
  • Nisdos AI on your mail
  • Move to your own storage whenever you want

Need more than 1 TB? Contact us for custom volumes and pricing.

Paid accounts rolling out

Nisdos AI, pointed at your own mail

Thread summaries, drafted replies, and search you can ask in plain language. Opt‑in per mailbox and off until you turn it on — included with any paid volume, at no extra cost. You train your personal AI instance to recognize what you consider a spam.

That's $0.08 per GB per month at any volume — $0.12 with EU storage — billed in advance and excluding tax. EU storage is managed by a French partner company. Yearly is the same rate, just fewer invoices, and you can close the account any time. Already have a bucket? Bring it instead: you keep the bytes and pay that provider directly for what they store.

Sending limits keep the platform off blocklists. A free account starts at 10 mails/hour, ramping up to 50/hour over your first 30 days. Every 25GB of storage you buy adds another +50 mails/hour, so 100GB gets you to 250/hour once ramped up. If we notice you use our service for spamming we will ban and report.