OpenEmail against
Resend
line by line.
Their list price is $20 / month for 50,000 sends, 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
The nicest developer experience in transactional email. Good docs, a clean API, React Email for the templates, and webhooks that arrive when they say they will.
Why people move
It sends. It does not receive, and there is no mailbox to read in, so a reply from a customer lands wherever your MX already points. OpenEmail is the API and the mailbox, so the reply comes back to a thread you can open.
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.
Resend is not a mailbox, so it is not on this table. The table compares the places mail actually lands, which is the choice Resend sits beside rather than replaces.
| 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 |
