All integrations Messaging

Rocket.Chat + MailKite

Rocket.Chat is an open-source team communication platform. Point its SMTP at MailKite and every invite, notification, and password reset goes out over your own DKIM-signed domain.

What you need

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

Configure SMTP

Open the Rocket.Chat admin panel and navigate to Administration → Email → SMTP. 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)

Administration → Email → SMTP

# Administration → Email → SMTP

Host:       smtp.mailkite.dev
Port:       587
Username:   mailkite
Password:   mk_live_...
From:       hello@yourdomain.com
Secure:     TLS

Test it

Invite a new user or trigger a password reset email. Use the Test button under Administration → Email to verify the SMTP connection.

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.
Settings cached — Rocket.Chat may cache SMTP settings. Restart the server after making changes.

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