You can read and send committee mail in Apple Mail, Outlook, Thunderbird or Gmail, using a committee role address. This is optional. If the group is happy using Admin → Inbox on the website, leave it switched off.
You still send newsletters and mail to the member list from the website composer. This setup is for day-to-day committee mail: Inbox, Sent, Drafts, Junk, Deleted, and any folders you already created on the website.
Open Admin → Mail Settings → API. Tick Allow External Mail Support, then save. Until that is done, mail apps cannot connect.
If you later need to stop every device at once, untick the same box and save.

Admin → Mail Settings → API: Allow External Mail Support. Off by default. Incoming mail uses IMAP port 993, outgoing mail uses SMTP port 465, both with SSL/TLS.
Only people who hold a committee role with an email address see this page. Open Profile → External Email Setup.
On a live site, incoming mail uses port 993 and outgoing mail uses port 465, both with SSL/TLS. Username is the committee role address. Password is the application password. Do not choose STARTTLS.
If the website address includes www, the hostname must include www as well. Copy it from Profile → External Email Setup. Leaving www off is a common reason the mail app cannot connect.
You can only send From a committee role address listed on Profile → External Email Setup. Sending from a personal address is refused. Mail you send this way is saved in the shared committee inbox Sent folder so the rest of the committee can see it.
Once the application password is created, open the guide for the mail app you use.

Profile → External Email Setup: pick the committee address, choose Mac, Windows, iPhone or iPad and the mail app, then create one application password. The copy icon next to the address copies the settings as a labelled note.
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