OpenEmail against
Proton Mail
line by line.
Their list price is $6.99 / person / month, checked in August 2026. Ours counts domains rather than people, so the two lines below diverge with the size of your team.
What they are better at
Real end-to-end encryption between Proton users, and Swiss jurisdiction. If your threat model needs zero-access mail today, this is the answer.
Why people move
Encryption is the ceiling as well as the floor: search is limited, the API is closed, and the price is per seat. OpenEmail is the choice when what you want is your domain, your agents, and one bill.
per seat everywhere but here; two or more needs Starter
5people
bills only us
1domain
per message nowhere; sets our step
5,000sent
bills only us, past ten
12addresses
You save with OpenEmail
$130 a month against Superhuman$1,680 a year
Forward Emailforwarding only$3/mo$36/yr
Mailchimpmarketing sends
$13/mo$156/yr
Resendtransactional sends
$20/mo$240/yr
FastmailStandard$25/mo$300/yr
OpenEmailper domain$30/mo$240/yr
Proton MailMail Essentials
$34.95/mo$419/yr
Google WorkspaceBusiness Starter$35/mo$420/yr
HEY for Domainsper person
$58/mo$696/yr
Superhuman+ Workspace$160/mo$1,920/yr
Line by line.
Every mailbox on one table, Proton Mail among them. Where a vendor does not document something, it says so rather than pretending the answer is no.
| Compared | OpenEmail per domain | Fastmail Standard | Proton Mail Mail Essentials | Google Workspace Business Starter | HEY for Domains per person | Superhuman + Workspace |
|---|---|---|---|---|---|---|
| What you actually pay for | The workspace | Each person | Each person | Each person | Each person | Each person, twice |
| Five people, every month | $30 | $25 | $34.95 | $35 | $58 | $160 |
| Twentieth person costs | $0 | $5 | $6.99 | $7 | $12 | $32 |
| Hosts the mail itself | a client on top of Gmail or Outlook | |||||
| Catch-all on your own domain | yours to switch on | paid plans | via a routing rule | aliases; catch-all not documented | whatever the host does | |
| Free on your own domain | one domain, ten addresses | trial only | custom domains are paid | trial only | no trial on domains | trial only |
| Drafts, subjects and answers from AI | writing assistant only | Gemini | Business tier | |||
| Your own agent can work the inbox | MCP server | JMAP API | API, no MCP | |||
| End-to-end encryption | between OpenEmail mailboxes | their whole point | enterprise tiers |
