Choose GMass if you need
- Integration with Google Sheets, Gmail or Slack. We haven't found them on Omnisend's website.
At a glance
- Omnisend has a free plan. We haven't confirmed one for GMass.
- Omnisend's lowest paid plan is Standard at $11.20 per month for 500 contacts, paying 3 months upfront, then billed monthly, as of October 23, 2026.
- They list no integrations in common.
- GMass has a public API. We haven't confirmed one for Omnisend.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Omnisend if you need
- Integration with Shopify or WooCommerce. We haven't found them on GMass's website.
GMass
Nobody has reviewed GMass yet. Its rating shows once it has 3 reviews.
Review GMass
Omnisend
Nobody has reviewed Omnisend yet. Its rating shows once it has 3 reviews.
Review OmnisendThe facts
- What it does
- GMassGMass sends your newsletters, announcements, cold email campaigns, and transactional email from inside Gmail.
- OmnisendHelps ecommerce brands grow with email & SMS marketing for Shopify, WooCommerce, and more
- Free plan
- GMassNot confirmed
- OmnisendYes
- Pricing
- GMassPer user or team size, monthly or annual
- OmnisendNot confirmed
- Paid plans from
What they share
From the platforms and integrations each website lists.
Integrations
BothNone in common
Only GMass
- Google Sheets
- Gmail
- Slack
Only Omnisend
- Shopify
- WooCommerce
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between GMass and Omnisend yet.
Used either of them?
Your review makes this comparison better for the next person. Review GMass or review Omnisend.