How to Schedule Email Sends in Gmass for Optimal Timing

If you're using Gmass, you're probably tired of sending emails that get ignored. Maybe you're managing sales outreach, running a newsletter, or just want your emails to land when people will actually read them. This guide is for you. I’ll walk you through how to schedule email sends in Gmass, how to pick the best times, and what’s actually worth your attention—without the fluff.

Why Scheduling Email Matters (and When It Doesn’t)

Before you dive into settings and features, be clear on why you’re scheduling emails:

  • Timing = Engagement: People are more likely to open your email when it lands at the top of their inbox, not buried under 50 other messages.
  • Work smarter: You can write emails when it suits you, and send them when it suits your audience.
  • Consistency: If you need to send regular updates, scheduling helps you stay on track.

But here’s the honest truth: Scheduling won’t magically fix a weak email, and there’s no “perfect hour” for everyone. Algorithms shift. People’s habits change. Use scheduling to stack the odds in your favor—not as a silver bullet.

Step 1: Connect Gmass to Your Gmail Account

If you’re already set up, skip ahead. If not:

  1. Install the Gmass Chrome extension.
    You have to use Chrome or a Chromium-based browser. Go to the Chrome Web Store, find Gmass, and add it.

  2. Connect to Gmail.
    Open Gmail in your browser. Click the Gmass button (usually a red icon). Grant the permissions it asks for—yes, you have to.

  3. Check for Gmass buttons in Gmail.
    You should now see new “GMASS” buttons in your Gmail compose window. If not, refresh.

Pro tip: If you’re using a Google Workspace (business) account, make sure your admin allows third-party extensions.

Step 2: Write Your Email (Don’t Overthink It)

Compose your email like you normally would. Use Gmail’s native compose window—Gmass just adds a few extra options.

  • Personalization: Gmass can mail-merge from Google Sheets, but if you’re just sending to a few people, you can skip that.
  • Attachments: Add them as usual. Gmass supports them.
  • Formatting: Don’t get carried away with fancy fonts and graphics. Simple is usually better (and less likely to be flagged as spam).

Step 3: Set Up Your Send List

For group emails or campaigns:

  • Mail merge: Click the “GMASS” button and choose to connect a Google Sheet with your recipient list. Columns can hold names, emails, custom fields, whatever.
  • Single sends: Just fill out the “To” field as normal.

Watch out for:
- Caps: Gmail (and Gmass) have send limits. If you’re sending to hundreds or thousands, you’ll need a paid plan, and you’ll need to pace yourself. - Spam flags: Don’t put a ton of emails in the “To” or “Cc” fields. Use “Bcc” for personal messages, or better, use the mail merge feature.

Step 4: Scheduling Your Email for Optimal Timing

Here’s the meat of it. Gmass gives you a few ways to schedule:

Basic Scheduling

  1. Click the small “Schedule” arrow next to the GMASS send button.
  2. Pick your date and time.
    You’ll see a calendar and time picker. Set when you want your email to go out.
  3. Confirm.
    Click “Schedule.” The email will sit in your Gmail “Drafts” or Gmass folder until it’s sent.

Advanced Scheduling Features

  • Recurring Sends: Want to send the same email every Monday? There’s an option for repeating campaigns.
  • Time Zone Sending: If your recipients are spread out, Gmass can send based on each contact’s time zone (if you add that data to your Sheet).
  • Auto Follow-ups: You can schedule follow-up emails that only go out if there’s no reply—huge for sales or outreach.

What Actually Matters (and What Doesn’t)

  • Don’t obsess over the exact minute.
    Most studies say weekday mornings (8–11 a.m. local time) are good, but honestly, it depends on your audience.
  • Test first.
    If you’re unsure, schedule batches at different times for a couple weeks and see what sticks.
  • Avoid weekends for business emails.
    Unless you know your audience checks email on Saturdays, stick to Monday–Thursday.

Ignore:
- Claims about “magic send times” guaranteed to boost your open rate by 300%. No tool, including Gmass, can read your audience’s mind.

Step 5: Double-Check Everything Before You Hit Schedule

This is where most people screw up:

  • Preview: Use Gmass’s “Preview” feature to send a test to yourself. Check for odd formatting, personalization fails, or missing attachments.
  • Check recipient columns: If you’re mail-merging, make sure your Google Sheet columns match your placeholders.
  • Look for typos: Give it one more read. Typos still happen, even with spellcheck.

Pro tip: If your campaign is high-stakes, schedule it 10 minutes out. That way, you can still cancel if you catch a mistake at the last second.

Step 6: After Sending—Track and Adjust

Gmass provides basic tracking:

  • Opens and clicks: You’ll see reports on who opened, who clicked, and who ignored you.
  • Replies: Gmass can track replies and trigger follow-ups.

What to Do With Tracking Data

  • Look for patterns: Are certain days/times getting better results? Adjust future schedules.
  • Don’t chase vanity metrics: Opens can be unreliable (Apple’s privacy changes, image blockers, etc.). Focus on replies and actual outcomes.

Tips for Scheduling Emails That Actually Get Read

  • Know your audience: If you’re emailing teachers, don’t send at 8 p.m. If you’re targeting tech folks, early morning or post-lunch often works.
  • Batch and queue: Don’t try to send 1,000 emails at once. It looks spammy and can get you throttled.
  • Keep it simple: The more complicated your scheduling setup, the more likely something weird will happen. Stick to what works.
  • Test, don’t guess: Run small experiments. Don’t be afraid to tweak as you go.

What Not to Waste Time On

  • Over-automation: Scheduling is great, but don’t automate so much that you lose the human touch.
  • Obsessing over “best practices”: Those blog posts with “27 Unbeatable Send Times”? Take them with a grain of salt. Your audience is what matters.
  • Ignoring Gmail limits: Even with Gmass, you can’t brute-force your way around Gmail’s sending limits. If you hit them, your account could get suspended.

Wrapping Up: Keep It Simple, Iterate, and Don’t Stress

Scheduling emails in Gmass is easy once you get the hang of it. Set up your message, pick a reasonable time, and let it run. If you really want better results, don’t overcomplicate things—just keep testing, keep tweaking, and pay attention to what your actual readers do. The fanciest tool in the world won’t help if you’re not sending stuff people care about. Send smart, not just “optimized.”