GitLab sends transactional email (SMTP — Gmail/SendGrid/SES) and accepts inbound email for issue/MR replies via IMAP (reply-by-email).
Configure GitLab's SMTP to MailKite for notifications. See /docs/integrations/gitlab.
Read the full setup guideA minimal, copy-paste starter. Swap in your own domain and API key.
# Any app that accepts an SMTP server works with MailKite
MAIL_HOST=smtp.mailkite.dev
MAIL_PORT=587 # STARTTLS (or 465 for TLS)
MAIL_ENCRYPTION=tls
MAIL_USERNAME=mailkite # username is ignored
MAIL_PASSWORD=mk_live_... # your MailKite API key
MAIL_FROM_ADDRESS=you@yourdomain.com # on a verified domain
MAIL_FROM_NAME=GitLabPoint a domain, set one SMTP endpoint, send your first email in minutes. Unlimited domains, no credit card.