Simple, transparent pricing

Start free. Upgrade when you need more.

Available in 10 languages — from $9/month

Free

$0/mo
250 emails / month
  • CSV recipient upload
  • Mail merge ({{firstName}} etc.)
  • Open tracking
  • Click tracking
  • Scheduled sending
  • A/B testing
  • Templates
  • AI Email Writer
Get Started

Starter

$9/mo
2,500 emails / month
  • Everything in Free, plus:
  • Click tracking
  • Scheduled sending
  • Follow-up emails
  • CSV export
  • A/B testing
  • Templates
  • AI Email Writer
Start with Starter

Pro

$19/mo
10,000 emails / month
  • Everything in Starter, plus:
  • A/B subject testing
  • Email templates
  • AI Email Writer (50/mo, 10 languages)
  • Priority support
  • Campaign reports
  • Advanced merge tags
Go Pro

Install free from the Chrome Web Store or Microsoft Edge — upgrade anytime inside Outlook.

OutMass vs GMass

OutMass Pro GMass Standard
Monthly price $19 $29.95
Platform Outlook Web Gmail
Languages 10 (incl. TR, DE, FR, ES, RU, AR, HI, ZH, JA) English only
AI Email Writer Included (Claude) Not available
Email limit 10,000 / month ~15,000 (Gmail limit)
Mail merge ✓ ✓
A/B testing ✓ ✓
Follow-ups ✓ ✓
Scheduled sending ✓ ✓

Frequently Asked Questions

Can I try Pro features before buying?

You can start on Free and upgrade anytime. Cancel anytime — no long-term contract.

What payment methods do you accept?

We accept all major credit cards via Stripe. Subscriptions are billed monthly.

Can I cancel anytime?

Yes — cancel from your account settings at any time. You keep access until the end of your billing period.

Is there a refund policy?

Yes — we offer a 30-day money-back guarantee. See our refund policy.

Do emails go through your servers?

No. Emails are sent directly through Microsoft Graph API using your own Outlook account. We never store your email content.

Does OutMass work with Microsoft 365 work & school accounts?

Yes — Microsoft 365 work and school accounts are fully supported, and most can connect right away. Only if your organization specifically restricts third-party apps will an IT administrator need to approve OutMass first (a standard Microsoft security setting). In that case you can ask your admin to approve OutMass, email support@getoutmass.com and we'll help, or sign in with a personal Outlook.com account instead — personal accounts work right away.

What languages does OutMass support?

The extension UI, unsubscribe pages, and AI Writer all support 10 languages: English, Turkish, German, French, Spanish, Russian, Arabic (RTL), Hindi, Simplified Chinese, and Japanese.

What happens if I exceed my monthly email limit?

Sending pauses until next month, or you can upgrade your plan anytime.

⚠️ Important: Microsoft sending limits apply

OutMass sends emails through your own Microsoft Outlook account via the Graph API. Microsoft enforces its own sending limits on top of our plan quotas:

Our plan quotas (Free: 250, Starter: 2,500, Pro: 10,000 per month) apply in addition to these limits — whichever is stricter takes effect. We recommend spacing large campaigns over multiple days to avoid Microsoft rate limits and maintain sender reputation.

Microsoft may update these limits without notice. OutMass cannot override or guarantee delivery against Microsoft's platform limits.