Setting Up Your Green Party Email In Apple Mail (Mac)

Setting Up Your Green Party Email In Apple Mail (Mac)

Who This Is For

This guide is for local party officers and volunteers who need to add their Green Party email account to Apple Mail on a Mac. If you are setting up on an iPhone or iPad, see Setting Up Your Green Party Email On iPhone Or iPad instead.

This article was last updated September 2026. If you think it needs an update let us know by using the feedback buttons at the bottom of the article.

Norm Cassidy Digital Support Manager
Norm Cassidy

This guide covers adding your Green Party email to Apple Mail on a Mac using the current Stackmail settings provided by 20i.
If you have done this before and need the server details, skip to the quick settings reference below.

Setting up on a different device or app?

Quick Settings Reference

SettingValue
Account typeIMAP
Incoming serverimap.stackmail.com
Outgoing serversmtp.stackmail.com
UsernameLeave blank unless your mailbox uses a different username
PasswordYour mailbox password
If you need the full walkthrough, read on.

Before You Start

Warning
Use IMAP, not POP3
When asked to choose an account type, always select IMAP. Do not select POP3 - it downloads emails to a single device and can remove them from the server, which means other devices and webmail will no longer see them. If you are not sure what this means, see Should I Use POP3 or IMAP For My Green Party Email?


You will need three things:
  • Your Green Party email address (e.g. yourrole@localparty.greenparty.org.uk).
  • The password you were given, or that you set through webmail.
  • A Mac running macOS (Apple Mail is pre-installed).

Setting Up Your Email

  1. Open Mail on your Mac.
  2. From the menu bar, choose Mail > Add Account.
  3. Select Other Mail Account, then click Continue.
  4. Enter your name, your full Green Party email address and your mailbox password.
  5. If Apple Mail asks for more settings, enter:
    a. Username: leave this blank unless your mailbox uses a different username
    b. Account Type: IMAP
    c. Incoming Mail Server: imap.stackmail.com
    d. Outgoing Mail Server: smtp.stackmail.com
  6. Click Sign In.
  7. Click Done to finish adding the account.

Verifying It Worked

  1. Check that your inbox loads and any existing emails appear.
  2. Send a test email to yourself to confirm both sending and receiving work.
  3. Check your Sent mailbox - the test email should appear there too.

Troubleshooting

Authentication keeps failing: Check that the email address and mailbox password are correct. If you entered a username, leave it blank unless your mailbox uses a different username.
Can receive but cannot send: In the account server settings, check that the outgoing server is smtp.stackmail.com and that you are using the same mailbox password.

If neither of these solves it, raise a ticket and include your macOS version and any error messages you see.
Next Steps
Jargon Buster
Changelog
Next Steps
More From Digital Support
  1. Accessing Your Green Party Email Through Webmail - check email in a browser
  2. Setting Up Your Green Party Email On iPhone Or iPad - if you also want email on your phone
Stuck? Raise a ticket and we will take a look.

Official Apple Mail Guides
As helpful a bunch as we are, we can't provide support for everything. If you need help with your mail app itself - rather than your Green Party email account - these official guides are the right place to look:
  1. Creating an email signature in Apple Mail (Mac) ↗
  2. Apple Mail support ↗
Jargon Buster
TermMeaning
IMAPInternet Message Access Protocol. Keeps your emails on the server and syncs them across all your devices. The recommended option.
POP3Post Office Protocol. Downloads emails to one device and (usually) removes them from the server. Not recommended unless you have a specific reason.
SMTPSimple Mail Transfer Protocol. The system used for sending outgoing email.
SSL/TLSEncryption that protects your email data in transit between your computer and the server.
StackmailThe email hosting service used by the Green Party.

Changelog
DateChange
September 2026Updated to match 20i's current Apple Mail setup instructions. Formatting fixes for compatibility with the new theme.
March 2026Article published. Covers Apple Mail on macOS Ventura and later.