This page is generated from the product itself — the same source the built-in assistant answers from — so it cannot disagree with either.
Read the message first — it is written to say what is wrong and, where there is one, the fix. If it says to set something in settings, that means the app’s own settings screen or Company settings. If it quotes a reference, keep it for support.
No mailbox is set up for you yet, so there is nothing to read here.
mail.error.notConnected
That folder is not in your mailbox.
mail.error.folderNotFound
That message is no longer in this folder. It may have been moved or deleted somewhere else.
mail.error.messageNotFound
{to} is not an email address.
mail.error.recipientInvalid
Give the message a subject.
mail.error.subjectRequired
The message is empty.
mail.error.bodyRequired
The message is longer than {body} characters.
mail.error.bodyTooLong
This box sends to {to} recipient at a time. Send a separate message to each person.
mail.error.tooManyRecipients
That mail server address cannot be reached from here. Check the hostname with whoever set up the mailbox.
mail.error.hostRefused
The mail server would not accept your sign-in. The password may have changed — connect the mailbox again.
mail.error.signInRefused
The mail server did not answer. Try again in a moment.
mail.error.serverUnreachable
The mail server refused the request.
mail.error.serverRefused
Mail is read inside a company workspace, and this request is not in one.
mail.error.tenantRequired
{address} is not an email address.
mail.error.addressInvalid
Enter the password for this mailbox.
mail.error.passwordRequired
Enter the incoming mail server.
mail.error.imapHostRequired
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Your answer is kept on this device only. Nothing is sent anywhere — there is no service behind this button yet, and this page will say so until there is.