Integrations
Works with the mail you already have
Connect Google Workspace and Microsoft 365 with OAuth, any of 31 SMTP mail and relay providers, or a sending API. Then connect SecureThread to the rest of your stack. Providers appear with their own logos, only to identify them.
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Google Workspace and Microsoft 365
Connect with OAuth: SecureThread sends through the Gmail API and Microsoft Graph, and reads the inbox on demand. Tokens are stored encrypted, and minimal scopes are requested.
Google Workspace
Gmail API for sending and the inbox; Google sign-in for people where turned on.
Microsoft 365
Microsoft Graph for sending and the inbox; Microsoft sign-in for people where turned on.
12 providers
Business email
Mailboxes on your own domain, connected over authenticated SMTP with TLS.
Hostinger Email
smtp.hostinger.com
Titan Email
smtp.titan.email +1
Zoho Mail
smtppro.zoho.com +1
GoDaddy Professional Email
smtpout.secureserver.net
Namecheap Private Email
mail.privateemail.com
IONOS Mail
smtp.ionos.com +2
OVHcloud Email
ssl0.ovh.net +1
Rackspace Email
secure.emailsrvr.com
Fastmail
smtp.fastmail.com
Proton Mail
smtp.protonmail.ch
Yandex 360
smtp.yandex.com
DreamHost Email
smtp.dreamhost.com
6 providers
Personal email
Personal mailboxes, connected with an app password where the provider requires one.
Gmail (app password)
smtp.gmail.com
Yahoo Mail
smtp.mail.yahoo.com
iCloud Mail
smtp.mail.me.com
AOL Mail
smtp.aol.com
GMX
mail.gmx.com +1
Mail.com
smtp.mail.com
13 providers
Transactional relays
Sending services for application mail, on sender domains an administrator approves.
Amazon SES
email-smtp.us-east-1.amazonaws.com +16
Twilio SendGrid
smtp.sendgrid.net
Mailgun
smtp.mailgun.org +1
Postmark
smtp.postmarkapp.com +1
Brevo
smtp-relay.brevo.com
Mailjet
in-v3.mailjet.com
SparkPost
smtp.sparkpostmail.com +1
Resend
smtp.resend.com
Zoho ZeptoMail
smtp.zeptomail.com
MailerSend
smtp.mailersend.net
SMTP2GO
mail.smtp2go.com +4
Elastic Email
smtp.elasticemail.com
Mailchimp Transactional (Mandrill)
smtp.mandrillapp.com
Sending APIs
Connect over the provider’s HTTP API
Better message ids and event reports than SMTP: delivery events come back through verified webhooks and appear in analytics.
Amazon SES
SendGrid
Mailgun
Postmark
Resend
Need a server that is not listed? Administrators can approve any SMTP server that resolves to public addresses and presents a valid TLS certificate.
Your stack
Automation, AI and identity
Zapier, Make and n8n
Step-by-step recipes built on the REST API and event webhooks. Native connectors are on the way.
Learn moreEvent webhooks
Signed HTTPS calls to any system when messages, approvals and campaigns change.
Learn moreClaude, ChatGPT, Cursor and VS Code
Any MCP client connects to the SecureThread MCP server over OAuth 2.1, with scopes you grant.
Learn moreSlack and Microsoft Teams
Approval requests announced in the channels your approvers already use.
Learn moreOkta, Microsoft Entra ID and SCIM
People created, updated and deactivated from your identity provider over SCIM 2.0.
Learn moreSplunk, Datadog and other SIEMs
Audit events streamed to your security information and event management platform.
Learn moreAnthropic and OpenAI-compatible AI
Bring your own key for AI drafting, stored encrypted and bound to your workspace.
Learn moreSend your first approved email today
Connect a mailbox, pick a template and send with the checks and approvals your organization needs. No new email address, no new habits.