Bulk email means sending one message to a large list, with each person receiving their own copy in their own inbox. It is also called an email blast or a mass email. The method that works depends on two things: how many people are on your list, and how often you plan to email them.
Rule of thumb: Gmail or Outlook for a few dozen people, an email marketing tool for a list you email every week, and a managed email blast service for a one-off send to hundreds of thousands.
What is an email blast?
An email blast is a single email sent to your whole list (or a large part of it) at the same time. Each recipient sees only their own address, and replies come back to you alone. It differs from a newsletter, which goes out on a regular schedule, and from a mail merge, which personalises each copy from a spreadsheet. A blast is usually an announcement: a sale, a new listing, an event or a deadline.
How to send bulk email from Gmail or Outlook
For a small list, your normal inbox works, as long as you avoid the two classic mistakes.
- Don't put everyone in To or CC. Every recipient sees every other address, and "reply all" goes to the whole list.
- BCC works, but only just. Recipients see an empty or odd To line, which looks like spam, and you can't see who opened it.
The better option is mail merge. In Gmail (on a Google Workspace plan) you can turn on mail merge in the compose window and pull names from a Google Sheet. In Outlook you run a mail merge from Word using an Excel list. Each person gets an individual email with their own name in it.
The limit is volume. A free Gmail account can send to about 500 recipients a day and a Google Workspace account to about 2,000; Outlook has similar daily caps. Go over them and your account is paused, often in the middle of a send.
How to send bulk email, step by step
- Clean your list. Remove duplicates, addresses that bounced before, and anyone who unsubscribed. Bounces are the fastest way to the spam folder.
- Send from your own domain. An address like news@yourbusiness.com, not a free Gmail or Yahoo address.
- Authenticate that domain with SPF, DKIM and DMARC records. Your email tool gives you the exact records to add to your DNS.
- Write one clear message. A specific subject line, a short body, one call to action, real text rather than a single image, and a visible unsubscribe link.
- Test it. Send it to Gmail, Outlook and Yahoo addresses you own and check that it lands in the inbox and the links work.
- Send, then watch the numbers. Bounces, unsubscribes and spam complaints in the first hour tell you whether the list is healthy.
How to keep bulk email out of spam
Since 2024, Gmail and Yahoo hold bulk senders to the same basic rules. If you send thousands of emails a day, you need:
- SPF and DKIM on your sending domain, plus a DMARC record;
- a one-click unsubscribe link that works straight away;
- a spam complaint rate below 0.3%.
In practice, complaints and bounces come from old or unfamiliar lists. Email people who signed up to hear from you, say who you are in the first line, and remove anyone who bounces or unsubscribes before the next send.
Bulk email software vs. a managed email blast service
| Method | Best for | Cost | Your work |
|---|---|---|---|
| Gmail or Outlook | A few dozen to a few hundred people | Your email plan | Mail merge, daily limits |
| Email marketing software | A subscriber list you email every week | Monthly plan priced by list size | Set up the account, domain, templates and sending |
| Managed email blast service | 500,000 to 5,000,000 emails in one campaign | One price per campaign, from $599 | Send the list and the message |
Email marketing platforms are built for ongoing newsletters, and they usually charge by the number of contacts you store, every month. If you have one large list and one message, paying for a month (or a year) of software you will use once rarely makes sense.
Sending to 500,000 or more
That is what we do at Smarterblast. You bring the list and the message; we run the send:
- Choose a package by list size: Bronze is $599 for up to 500,000 emails, Silver $799 for up to 2,000,000, and Gold $1,199 for up to 5,000,000.
- Pay in crypto. You don't need to send your list yet.
- Upload your list, subject line and message through a private link we email you once the payment is confirmed.
- We send the campaign and email you the delivery report.
For the timing, see the best time to send an email blast.
Sending to 500,000 emails or more?
Bring your list and your message. One price per campaign from $599, up to 5,000,000 emails, with a delivery report.
See email blast packages →Frequently Asked Questions
How many emails can I send at once from Gmail?
A free Gmail account can send to about 500 recipients a day, and a Google Workspace account to about 2,000. Above that, Google pauses sending for up to 24 hours. For larger lists, use email marketing software or a managed email blast service.
Can I send bulk email for free?
For a small list, yes: mail merge from Gmail or Outlook costs nothing beyond your plan, and most email marketing tools have a free tier for a few hundred contacts. Sending to tens of thousands of people always costs money, because it needs sending infrastructure and a domain with a good reputation.
What is the difference between an email blast and a newsletter?
A newsletter goes out on a regular schedule with ongoing content. An email blast is a one-off message to a whole list at once, usually an announcement or an offer.
How do I send a bulk email without everyone seeing each other’s address?
Use mail merge or an email marketing tool, which send each person their own copy. Never put the whole list in To or CC. BCC hides the addresses but tends to look like spam.
Is it better to send an email or a text?
Email is cheaper per message for very large lists. Texts are read and answered faster. If you need replies quickly, see our SMS blast packages, from $449 with a 70% delivery guarantee.