Limits

Every limit of the service in one place, read from the same settings the code enforces.

By plan

In webmail the daily count is of recipients, To, Cc and Bcc alike: a message to three people counts three. From mail apps, Free counts messages instead, the same number a day, each to at most 5 people. Both start again at midnight UTC.

Sending

• At most 50 recipients per message in webmail.
• Attachments: 25 MB per message in total.
• On every plan, from mail apps and webmail alike, the mail server lets one account send at most 100 messages an hour and 1000 a day. These are above every plan's daily limit: they stop a stolen account, not you.
• New free accounts, for their first 24 hours, in webmail: messages go only to people who wrote to you first, or as replies, and to at most 5 people at once.
• A free mailbox is suspended when 20 of its messages are refused by other servers in one day (mail to addresses that do not exist): it protects everyone’s deliverability.
• Undo: a sent message waits 10 seconds on the server, in which you can take it back. Send later: up to 30 days ahead.

Custom domains

• At most 3 domains waiting for verification at a time; a claim that is not verified within 7 days is removed, so nobody can block a name.

Account

• Sessions end after 12 hours.
• Deleting the account can be cancelled for 14 days after you ask; then it is gone.
• If a payment lapses, paid features continue for 7 days, then the account falls back to the Free limits. Mail is kept.

Fair use and what is not allowed: the Acceptable Use Policy.