Email Warmup Schedule Calculator: Your Day-by-Day Plan

Planning your first bulk send from your Google Workspace address? An email warmup schedule tells you how many emails to send each day, starting small and rising slowly, so Gmail and Outlook get used to your inbox before the big send.

Answer a few questions below to get your own day-by-day plan, then download it and tick off each day.

How does this email warmup schedule work?

The calculator starts at a low number that fits your inbox’s history, then adds no more than about a fifth each day until it reaches your goal. It’s our own cautious rule of thumb, not a Google rule. It follows Google’s advice to start with a low volume to people who engage with you and increase slowly.

These timings assume you send every day. Sending on weekdays only stretches the plan, because the calculator holds your number steady after each weekend.

Not sure where to start? Our guide on how many emails you can send a day without going to spam explains the starting numbers in more detail.

Why not send everything on day one?

Because a sudden jump from a quiet inbox looks risky. Email providers judge each sender by its sender reputation: a running score of how trustworthy your address and domain (the part after the @, like yourcompany.com) look, based on how you’ve sent before and how people reacted.

Google advises against sudden spikes in volume if you don’t have a history of sending large amounts, such as doubling overnight. It also recommends sending at a steady rate rather than in bursts.

What limits does Google put on your schedule?

Google sets hard daily limits, and the calculator never plans above them. Reaching a limit doesn’t mean your email is safe. It means Google will stop you sending.

If you go over a limit, you can’t send new messages for up to 24 hours. Trial accounts stay at 500 until you convert to paid and your domain has paid at least $100 in total, and Google says the increase can take up to 75 days.

What should you check before day one?

Set up SPF, DKIM and DMARC on your domain first. These are three settings in your domain’s DNS (the records that tell the internet where your email and website live). Together they prove your email really comes from you. Gmail requires every sender to have at least SPF or DKIM, and recommends all three.

You can check your domain settings free in under a minute.

What should you watch while you follow the plan?

Watch three things each day, and hold your number steady as soon as one looks wrong:

1. Bounces and delays. A bounce is an email that comes back undelivered. If bounces or delays rise, Google advises reducing volume until the errors fall, then increasing slowly again.
2. Spam reports. Google asks senders to keep spam reports below 0.10% and never reach 0.30%. That’s 1 report in 1,000 emails, and 3 in 1,000 at most. Google Postmaster Tools, a free dashboard from Google, shows this once you send enough email to Gmail users.
3. Replies. If people who normally reply go quiet, your email may be landing in spam.

For the full picture of getting a new inbox ready, read our guide on how to warm up a new Google Workspace email.

What can’t a warmup schedule fix?

Warmup builds trust in your inbox. It can’t make people want an email they didn’t expect.

Some things are still down to you:

• Who you email. People who don’t know you are the most likely to report you as spam. Old, bought or scraped lists also bring bounces.
• Spam reports. Every “Report spam” click hurts your reputation, however slowly you ramped up.
• What the email says. Write like a one-to-one email, keep links to one or two, and skip attachments. Pushy or misleading wording matters mostly because it makes people hit “Report spam”.

Offer an easy way to opt out, and stop emailing anyone who asks. Our guide to spam trigger words explains what really affects where your email lands.

Before you hit send

• Check SPF, DKIM and DMARC are set up. Run the free domain check.
• Follow your plan, and hold steady if bounces or spam reports rise.
• Start with people who know you and expect your email.

Rather not track this by hand? Warmuply warms up your inbox in the background and shows your safe-send number every day. Start a free 7-day trial. No credit card needed.