SMTP relay
Amazon SES (SMTP mode), SMTP (gen_smtp), Mua, Sendmail and Proton Bridge: set the relay to smtp.mailops.eu:587 and use your MailOps app token as the password. No code change.
Your ESP metrics grew up. Did your routing?
MailOps connects to the providers you already run and starts routing in days.
FOR ENGINEERS
import smtplib, os smtp = smtplib.SMTP("smtp.mailops.eu", 587)smtp.starttls()smtp.login("app-token", os.environ["MAILOPS_APP_TOKEN"])smtp.send_message(msg) # same From / To / payload
Repoint your SMTP client — the only line that changes is the host. Payloads, auth flow and webhooks stay exactly as they are.
Migration guide
Switch to MailOps. Keep your code.
MailOps implements the same API surface as your current provider. Pick it below — the only line that changes is where your requests point. No SDK swaps, no payload rewrites, no re-verification.
1 · Pick your current provider
SendGrid
HTTP API · api.sendgrid.com
1 line to change
# your existing SendGrid integration- https://api.sendgrid.com/v3/mail/send+ https://mailops.eu/v3/mail/send# auth: Authorization: Bearer <mailops-app-token># same payloads — one-line change
2 · That’s it — mail keeps flowing
- Auth headers and payloads unchanged
- Webhooks keep their existing shape
- Roll back by reverting the same line
Every adapter, one target
N°02HTTP APIs repoint to mailops.eu keeping their exact paths — your MailOps app token goes where the vendor token used to sit. SMTP-based integrations relay via smtp.mailops.eu:587.
Vendor
Endpoint
Auth — MailOps app token in
SendGrid
POST /v3/mail/send
Authorization: Bearer
Mailgun
POST /v3/:domain/messages
Authorization: Basic base64(api:…)
Postmark
POST /email
X-Postmark-Server-Token
Resend
POST /emails
Authorization: Bearer
MailerSend
POST /v1/email
Authorization: Bearer
SparkPost
POST /api/v1/transmissions
Authorization
Brevo / Sendinblue
POST /v3/smtp/email
api-key header
Mailjet
POST /v3.1/send
Authorization: Basic
Mandrill
POST /api/1.0/messages/send.json
JSON body key
Scaleway TEM
POST /transactional-email/v1alpha1/regions/:region/emails
Authorization: Bearer
SMTP (gen_smtp / Mua)
relay smtp.mailops.eu:587
app token as password
Dev inboxes
Mailpit and local test setups point at the MailOps sandbox the same way — smtp.mailops.eu:587 with the sandbox flag. Caught mail shows up in the dashboard instead of a local UI.
Ecosystem
N°03
One hub, every vendor
Ready when you are
Repoint one line, watch traffic flow through MailOps, and keep the old target as instant rollback. Most teams finish in under an hour.