Email autoconfiguration generator
Let Thunderbird, Outlook, Apple Mail, iPhone and other email apps set up accounts on your domain automatically – users just enter their email address and password. Enter your mail server settings, and we’ll create the files and DNS records.
Serve this file at (add an autoconfig host name pointing to a web server). Thunderbird, K-9 Mail / Thunderbird for Android, Evolution, KMail and others also check .
Outlook sends a POST request to and expects this response (as text/xml). Most static hosting won’t answer POST requests, so use a small script or a web server rule (for example, nginx: error_page 405 =200 $uri;).
Newer Outlook versions look up most providers through Microsoft’s own service first, and only use Autodiscover as a fallback.
Share this configuration profile with your users (by email, or as a download from your website). Opening it on an iPhone, iPad or Mac adds the account to Mail – they’re asked for their email address and password.
Unsigned profiles show as “Unverified” when installed – that’s normal. To remove the warning, sign the profile with a certificate.
Many apps (including Thunderbird and Apple Mail) also use these DNS records (RFC 6186). Records with a target of . say that the service isn’t offered.
Once published, check what apps will find with our email settings finder, and test the servers with the email server checker.
A free tool provided by Auth-Email
Auth-Email makes your Gmail, Outlook, or other OAuth 2.0 email account available to any IMAP, POP3, or SMTP email client — no app passwords or special configuration needed.
Frequently asked questions
How do email apps find server settings automatically?
Thunderbird (and others) look for an autoconfig file at autoconfig.yourdomain, Outlook looks for Autodiscover, and many apps check DNS SRV records. Apple devices can install a configuration profile. This tool creates all of them from your server settings.
Do I need this for Microsoft 365 or Google Workspace?
No – Microsoft and Google publish their own settings, and most apps already know them. These files are for domains with their own (or a hosting company’s) mail servers.