Documentation

Create, disable and burn aliases on ITProMail to keep identities separate and cut spam.

How storage quotas work by plan, how to check usage and free space, and how the 14-day Trash retention affects what you can recover.

Use plus-addressing (you+tag@itpromail.com) to tag where mail was sent, then sort tagged mail into folders with a Sieve rule.

A tour of the ITProMail webmail: folders, search, remote content blocking, session handling, and keyboard navigation.

Server hostnames, ports and security settings for configuring a mail client with ITProMail.

An accounts.conf entry for aerc that connects to ITProMail over IMAP and SMTP, with credentials supplied by a command rather than stored in the file.

Configure Thunderbird for Android, formerly K-9 Mail, for ITProMail with manual IMAP and SMTP settings and an app password.

Add an ITProMail account to Apple Mail on macOS and on iPhone or iPad using manual IMAP and SMTP settings and an app password.

A muttrc for ITProMail over IMAP and SMTP, with the app password read from a pass-style command instead of stored in plaintext.

Add an ITProMail account to the Outlook desktop app over IMAP and SMTP, and the limitations to expect with a non-Microsoft mailbox.

Configure Mozilla Thunderbird for ITProMail over IMAP and authenticated SMTP with an app password, and enable OpenPGP.

What you can do yourself to regain access, what support can and cannot do, and how to use and store recovery codes.

How to create, name and revoke app passwords for mail clients that connect to ITProMail over IMAP and SMTP.

Register FIDO2 hardware security keys for your ITProMail login, and why you should register two of them.

An account security checklist covering two-factor authentication, app passwords, sessions, PGP keys, filters, recovery and exports.

Turn on time-based one-time codes for your ITProMail login in Account, then Security, and store your backup codes safely.

How to upload a public PGP key to ITProMail, enable inbound encryption and publish through Web Key Directory.

How to forward mail and send automatic replies with Sieve, and what forwarding does to SPF, DKIM and DMARC results.

Seven Sieve rules for filing, sender routing, spam header handling, plus addresses, message size and auto-replies, ready to adapt.

What Sieve filters do in ITProMail, the basic syntax, and how to create and activate a script in Account > Filters.

Export your mail as mbox from Account > Export, or copy it with an IMAP tool such as mbsync into a local Maildir.

Copy mail from another IMAP provider into ITProMail with imapsync, starting with a dry run and finishing with checks before cutover.

DNS records needed to host a custom domain with ITProMail: MX, SPF, DKIM, DMARC and MTA-STS.

Rotate DKIM keys without breaking signatures: publish a new selector, verify it, switch signing, keep the old key during overlap, then retire it.

Turn on DMARC aggregate reports, read the XML feedback, and move a domain from p=none to quarantine and then reject without blocking legitimate mail.

Publish MTA-STS and TLS-RPT for a custom domain: the DNS TXT records, the policy file served over HTTPS, and a staged rollout to enforce mode.

How to read a delivery status notification, the difference between 4xx and 5xx SMTP replies, and what 450, 452, 550 and 554 usually mean.

Checklist for mail that never arrives or lands in spam: SPF, DKIM, DMARC, reverse DNS, blocklists, and reading the headers.

Diagnose webmail and IMAP login failures: wrong credential type, revoked app passwords, two-factor codes, expired sessions and temporary lockouts.

Outbound limits on ITProMail: 300 recipients per hour, 1000 per day, and 50 MB per message, with guidance on staying under them.