How is my security and privacy protected?

The app only has email-send permission while you're using it - it cannot read your inbox or perform other actions. The auth token expires every 1-2 hours, and credentials are stored only in your browser. Since everything happens locally, your data (contacts, emails and send history) will never be sent to any external server.

Will my bulk emails be marked as spam?

Emails are sent from your own Gmail account, so they're treated like regular personal emails. A few hundred to a few thousand emails are usually fine, but sending identical content repeatedly may trigger spam filters. To reduce the risk, send in smaller batches and personalize your emails with template variables.

How many emails can I send at once?

Send Bulk Email itself has no limits, but Gmail allows up to 500 emails per day. If you need to send more, spread them across multiple days.

How does this compare to MailChimp?

MailChimp and similar services offer better deliverability through dedicated sending infrastructure. Send Bulk Email is best for simple, quick campaigns - no signup, no fees, no learning curve.

I originally built this for myself. I needed to send cold emails for my own app, but services like MailChimp felt overkill and expensive for what I needed. I'm happy to share it with anyone who has the same problem.

Can I schedule emails?

Not yet, but scheduled sending is coming soon!

Can I create HTML or visually rich emails?

Right now you can use text formatting (headings, subheadings) and attach images and files. Full HTML email editing is on the way — coming in an upcoming release!

Can I use this for newsletters?

Yes! Send Bulk Email works great for newsletters. Import your subscriber list, compose your newsletter with the rich-text editor, personalize with template variables, and send — all for free through your Gmail account.

The Best Email Marketing Tools for Small Businesses in 2026 (And When They're Overkill)

Every "best email marketing tools" list reads the same. Ten tools, four stars each, a massive comparison table.

But which option should I choose anyway?

Here's four tools small businesses actually pick between. What each is good at, where each falls over, and what to do when none of them fit.

#1. Mailchimp: The Default You'll Recognize

Mailchimp holds 70% market share of the email marketing space. It works, the brand is everywhere, and most people pick what everyone else is using.

The only caveat: it's priced for businesses with real lists. Once you cross a few thousand contacts, the bill jumps fast. The interface is built for marketing teams, not for one person sending a monthly update. A lot of what you're paying for is meant for somebody else's workflow.

#2. Brevo: When You Need SMS Too

Brevo (formerly Sendinblue) is the value pick if you want email and SMS in one place. Pricing scales on emails sent, not contacts stored, which is friendlier for small lists you'd keep forever.

Solid all-rounder. The editor isn't the prettiest and deliverability is fine but not remarkable. If texts aren't part of your plan, the bundled SMS is paying for a feature you won't touch.

#3. MailerLite: The Friendliest Starting Point

MailerLite has the cleanest UI of the four, and a free plan that's genuinely usable - up to 500 subscribers and 12,000 emails a month.

For a solo operator still figuring out what works, it's the lowest-stakes way to start. Templates are modern and automation is straightforward.

The ceiling is lower than the others. Once you need deep segmentation or complex workflows, you'll outgrow it. But most small businesses never get there, and that's fine.

#4. Klaviyo: Only If You Sell on Shopify

Klaviyo is the ecommerce specialist. Its killer feature is real-time behavioral data from your store - who browsed what, who abandoned a cart, who bought twice - wired directly into personalized campaigns.

If you run a Shopify store, it's hard to beat. If you don't, you're paying for machinery you'll never use. 78% of Klaviyo's revenue comes from Shopify integration. Outside that context, it's an expensive sender.

The pattern across all four: too many features, pricing built around "growing businesses", and onboarding flows that assume you have a marketing team.

If you want to send 200 emails to your waitlist and see who opened them, any of these feels like buying a van to move a single box.

How to Pick When You're Just Starting

If you're running a one-person business and haven't sent a real campaign yet, ignore the feature charts. You need two things:

Personalization: merge a name, a company, or a recent action into the subject and body. Generic emails die in the inbox.
Open and click tracking: without this, you're guessing. With it, every send teaches you something.

That's the whole checklist. Segmentation, journeys, predictive send times - none of it helps until you've sent enough emails to have data worth segmenting.

Pick the tool with the shortest path from "I have a list of contacts" to "I can see who clicked". You can always upgrade later. Most people discover they never need to.

Send a campaign this week. Check who opens and clicks. That single loop teaches you more than any feature comparison.