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Email Distribution List Guide

A complete guide to email distribution lists — understand the different types (contact groups, email groups, mailing lists, marketing lists, BCC), learn step-by-step setup for Gmail, Outlook, Google Workspace, and Microsoft 365, and know when to upgrade from a distribution list to a proper email marketing platform.

About this tool

What is an email distribution list?

An email distribution list is a group of email addresses collected under a single name or address. Instead of typing multiple addresses every time, you send to the list and everyone on it receives the message. Distribution lists come in many forms — from simple contact groups in Gmail to managed organizational groups in Google Workspace and Microsoft 365.

The term "distribution list" is used loosely in the email world. It can refer to a contact group in Outlook, a Google Group in Workspace, a traditional listserv, or even a subscriber list in an email marketing platform. Each type has different capabilities and use cases.

Types of distribution lists

  • Contact Groups: Personal address groups saved in your email client (Gmail labels, Outlook contact groups). Simple, private, limited to ~20 addresses.
  • Email Groups: Organizational groups with a shared address (team@company.com). Managed by admins in Google Workspace or Microsoft 365.
  • Mailing Lists: Self-service lists with subscription management and moderation (listservs, Google Groups). Good for communities and large organizations.
  • Marketing Lists: Subscriber lists managed by an ESP like Sequenzy. Include analytics, templates, segmentation, and compliance features.
  • BCC Distribution: Simple one-off sends with all recipients in BCC. No setup needed, but no features either.

When to use a distribution list vs. an ESP

Use distribution lists for internal team communication, small groups, and two-way discussions. Use an ESP (Email Service Provider) when you're sending to external subscribers, need tracking and analytics, require compliance features, or want professional templates and automation.

If you're ready to move beyond simple distribution lists, Sequenzy makes it easy to manage subscriber lists with full segmentation, automation, and analytics — while staying compliant with GDPR and CAN-SPAM.

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Frequently Asked Questions

What is a distribution list in email?

A distribution list is a group of email addresses collected under a single name, so you can send one email that reaches everyone in the group. For example, 'marketing-team@company.com' might deliver to 12 team members. Distribution lists exist in many forms: contact groups in Gmail/Outlook (personal), Google Groups/Microsoft 365 groups (organizational), listservs (community), and marketing lists in ESPs like Sequenzy (commercial). The right type depends on your use case — internal communication, community discussion, or marketing.

How do I create a distribution list in Gmail?

In Gmail, distribution lists are called 'contact labels.' Go to contacts.google.com, select the contacts you want to group, click the label icon, and create a new label (e.g., 'Marketing Team'). When composing an email, start typing the label name in the To field — Gmail will suggest the label, and clicking it adds all members. For organizational groups in Google Workspace, your admin can create Google Groups with shared email addresses that work across the organization.

How do I create a distribution list in Outlook?

In Outlook desktop: go to People → Home → 'New Contact Group.' Name the group, click 'Add Members' to add people from your contacts, address book, or type new addresses, then Save & Close. When composing, type the group name in the To field. For Microsoft 365 organizations, admins can create Distribution Lists or Microsoft 365 Groups in the admin center, which give members a shared email address, calendar, and file storage.

What's the difference between a distribution list and a mailing list?

A distribution list is typically a simple group of addresses used internally (like team@company.com). A mailing list adds features like self-service subscription, moderation, archives, and posting rules — it's more like a managed community forum over email. Google Groups can function as either: a simple distribution list for internal use, or a mailing list with web archives and subscription management. The terms are often used interchangeably, but technically a mailing list is a more feature-rich version of a distribution list.

Can I use a distribution list for email marketing?

You shouldn't. Distribution lists lack the features required for legitimate email marketing: no unsubscribe mechanism (legally required by CAN-SPAM and GDPR), no bounce handling, no analytics, no compliance tracking, no professional templates, and no sending optimization. Using Gmail or Outlook to blast marketing emails also violates most email providers' terms of service and can get your account suspended. Use a proper ESP like Sequenzy for marketing — it handles compliance, deliverability, and analytics automatically.

What's the maximum size for a distribution list?

It depends on the platform: Gmail contact labels have no hard limit but slow down past ~100. Google Groups supports up to 100,000 members (varies by Workspace plan). Outlook contact groups work best under 50 addresses. Microsoft 365 distribution lists support up to 100,000 members. BCC in most email clients is limited to 100-500 recipients. For anything over a few hundred recipients, you need either an organizational email group or a proper ESP — don't try to manage large lists through personal email.

How do I prevent reply-all storms on distribution lists?

For Google Groups: Settings → Posting policies → set 'Who can post' to specific people or require moderation. For Microsoft 365: In the admin center, set 'Only allow messages from people inside my organization' and restrict who can post. You can also configure the default reply behavior to 'reply to sender' instead of 'reply to group.' For any large group (50+ people), moderation is strongly recommended. Some organizations also use transport rules to block reply-all to large distribution lists.

Should I use CC or BCC when emailing a group without a distribution list?

Use BCC (Blind Carbon Copy) whenever recipients don't know each other or don't need to see each other's addresses. CC exposes every email address to every recipient — this is a privacy issue and can lead to reply-all storms. The only time CC is appropriate is when all recipients know each other and may need to reply to the group (like a small project team). For anything resembling a broadcast — announcements, invitations, updates — always use BCC or a proper distribution list.

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