I sent a newsletter from my regular email and now my emails go to junk

The short answer

One big send from your everyday address can drag down every email you send afterward. When people mark a message as spam, Gmail and Outlook trust your whole domain a little less, invoices included. It usually recovers. Stop the bulk sends from your mailbox, go back to normal email for a while, and use a newsletter tool for anything going to a list.

Check your own email first. Free, about 90 seconds. You get a grade and a plain-English list of what's working and what isn't.

Why this happens

Google says it plainly: if messages from your domain get reported as spam, your future messages are more likely to land in spam too. Microsoft goes further. It warns that sending bulk email from your main address “can affect the delivery of regular email” from everyone at your business, and says business mailboxes aren’t meant for bulk sending at all.

There are hard limits as well. A Microsoft 365 mailbox can email up to 10,000 people a day. Google Workspace allows 2,000 messages a day per person. Go over, and sending can be blocked for up to a day.

What to do now

Stop sending to the list from your mailbox, including big BCC emails.
Check you aren’t blocked. If your emails bounce back saying you “weren’t recognized as a valid sender”, Microsoft has paused your sending. Follow this guide first.
Run the free check below to see whether your business landed on a spam blocklist.
Send normal email to people who know you for the next few weeks. Replies help. Don’t try to catch up on missed emails all at once.

Next time: use a newsletter tool

Tools like Mailchimp, Constant Contact or MailerLite are built for lists. They add an unsubscribe link, handle people who opt out, and keep complaints away from your everyday email. Set it up on your own domain using the tool’s “verify your domain” steps, and send from a separate address such as news@yourbusiness.com. Google suggests using different addresses for different kinds of email for exactly this reason.

Not comfortable doing this yourself? Forward this page to whoever looks after your website. The section near the bottom is written for them, click by click. Or have us work it out: the Email Fix checks every tool you send from and emails you steps written for your exact setup.

What this guide can’t do for you

It covers the common causes. It can’t tell you which of your tools is the one that’s failing, or give you the exact settings for your business and the company that manages your domain. That’s what the Email Fix does. We check every tool that sends email for you and give you steps written for your setup. If we can't find what's wrong with your email settings, you get your $299 back. The guarantee covers your email settings. No settings can fix email sent to people who didn't ask for it, like bought lists or mass emails.

See what's included and the price →

Free check

See what's wrong with your email, free

Type in your business's web address (the part after the @ in your email). You'll get a plain-English answer: what's working, what isn't, and what to do next.

Common questions

How long until my email recovers?

There's no fixed time. It depends on how many people complained and how you send afterward. Steady, normal email to people who expect it is what rebuilds trust.

Is it OK to BCC a small group?

Emailing a handful of people who know you is normal. The trouble starts with big lists, especially people who didn't ask to hear from you.

Why did it hurt my invoices too?

Gmail and Outlook judge your whole domain, not one message at a time. Spam complaints about the newsletter count against everything sent from the same domain.

Pass this part on

For your IT person or web developer

You can forward this page as it is. Everything below is written so someone who doesn't work with email settings every day can follow it.

Bulk mail went out from a primary mailbox and domain reputation dropped.

1. Check for a sending block

Microsoft 365: security.microsoft.com → Email & collaboration → Review → Restricted entities. Exchange Online limits are 10,000 recipients per day and 30 messages per minute per mailbox. Google Workspace: 2,000 messages per user per day; limits reset on a rolling 24 hours.

2. Watch the spam rate

Set up Google Postmaster Tools for the domain. Google asks senders to stay below 0.10% and never reach 0.30%.

3. Move bulk mail off the primary domain

Use a newsletter or bulk email provider with its own DKIM and return-path set up for the domain. Microsoft recommends a subdomain for bulk mail (for example news.yourdomain.com) so its reputation is kept apart from regular email. Senders of 5,000+ messages a day to Gmail must also support one-click unsubscribe.

Written by the SenderFix team. Last updated October 16, 2026.