All integrations Productivity

Nextcloud + MailKite

Nextcloud is a self-hosted productivity platform. Point its SMTP at MailKite and every share notification, password reset, and activity alert goes out over your own DKIM-signed domain.

What you need

A verified domain with SPF + DKIM published
Your API key (mk_live_…)
A Nextcloud instance

Configure SMTP

Open your Nextcloud admin panel and go to Settings → Administration → Administration settings → Email server. Set the send mode to SMTP and enter the MailKite connection details.

SMTP Host	`smtp.mailkite.dev`
SMTP Port	`587`
Encryption	TLS (STARTTLS)
Username	`mailkite`
Password	Your API key (`mk_live_…`)
From Address	`hello@yourdomain.com` (on a verified domain)

Settings → Administration → Email server

# Settings → Administration → Email server

Send mode:          SMTP
SMTP host:          smtp.mailkite.dev:587
SMTP security:      STARTTLS
SMTP username:      mailkite
SMTP password:      mk_live_...
From address:       hello@yourdomain.com

Test it

Share a file with another user or trigger a password reset email. Check your MailKite dashboard to confirm the message was relayed.

Troubleshooting

Emails not sending — confirm the from address is on a verified domain.
535 Authentication failed — your password must be your mk_live_… API key, not a separate SMTP password.
Port 587 in host field — Nextcloud expects the port appended to the host as smtp.mailkite.dev:587.
Email verification — check Settings → Personal → Personal info to confirm the from address is verified in Nextcloud.

See the SMTP relay docs for the full connection reference, or all integrations for other platforms.