GMass vs QuickMail: Cold Email Platform Comparison

GMass vs QuickMail: Cold Email Platform Comparison

GMass sends from the Gmail account you already read. QuickMail sends from as many mailboxes as you can attach to it. That is the whole comparison, and it decides the ceiling on how much either one can ever send.

The Quick Answer

GMass is a Chrome extension bolted onto Gmail: Standard $29.95 a month, Premium $39.95, Professional $59.95, and a five-seat Team Premium at $175. Contacts and sends are unlimited in GMass's own terms and bounded by Gmail's.

QuickMail is a standalone platform: Starter $49 a month for 1,000 contacts and 5,000 sends, Growth $99 for 25,000 and 100,000, Agency $299 for 100,000 and 500,000. Email senders, LinkedIn accounts and users are unlimited on all three.

Below a few hundred sends a day, GMass is cheaper and simpler. Above it, Gmail's own limits decide the argument.

Understanding the Core Difference

GMass is a Chrome extension that turns a Gmail account into a mail merge and sequencing tool, so campaigns send from the mailbox you already read.

QuickMail is a cold email platform built for agencies and high-volume senders, with unlimited email senders, unlimited LinkedIn accounts and unlimited users on every tier.

GMass inherits everything about the mailbox it lives in. That is its strength, because replies land where you already work and the sending domain is one you already own, and it is also its ceiling: a Google Workspace account's daily send limit applies to GMass exactly as it applies to anything else sending through that account. The GMass page is explicit that sends are unlimited inside Gmail's own limits.

QuickMail is the opposite shape. It holds the contacts, attaches as many sending addresses as you give it, and rotates across them, so volume grows by adding mailboxes rather than by upgrading a Google plan. Its ladder is bought with contact volume: Starter's 1,000 uploaded contacts and 5,000 sends a month, Growth's 25,000 and 100,000, Agency's 100,000 and 500,000.

One structural note in QuickMail's favour that most comparisons skip: unlimited email senders, unlimited LinkedIn accounts and unlimited users appear on all three tiers, so a five-person team pays the same as one person.

Pricing Comparison

$29.95/moGMass entry plan

Standard

$49/moQuickMail entry plan

Starter

GMass pricing

Annual billing drops Standard to $20 a month, invoiced at $249 a year. One warning for anyone checking these numbers: the pricing page localises currency by visitor region, so a European reader sees pounds or euros rather than the dollar figures above.

Source: GMass Pricing

QuickMail pricing

Unlimited email senders, unlimited LinkedIn accounts and unlimited users are listed on all three tiers, so the price ladder is bought with contact volume rather than with seats or mailboxes.

Source: QuickMail Pricing

What the two cost at a realistic volume

Take an invented but ordinary case: 3,000 contacts a month, one message each, run by a team of three. The arithmetic is illustrative and uses list prices only.

On QuickMail that is 3,000 contacts and 3,000 sends, which fits Starter's 1,000-contact cap only if the list is refreshed rather than stored, so realistically it is Growth at $99 a month. Three users cost nothing extra, and the sends can be spread across as many mailboxes as you have warmed.

On GMass, 3,000 sends a month is about 100 a day, which sits inside a normal Google Workspace limit, so one Standard seat at $29.95 covers it. Three people each sending from their own mailbox is three seats, which is where Team Premium at $175 for five seats becomes the cheaper line.

The crossover is the mailbox count. One mailbox at low volume is GMass territory. Ten mailboxes rotating behind one campaign is QuickMail territory, and no GMass tier changes that, because the constraint is Google's rather than GMass's.

Reading the price ladders against each other

Two things are worth knowing before quoting either price.

GMass localises currency by visitor region, so a European reader loading the pricing page sees pounds or euros rather than the dollar figures above. Check which currency you were shown before building a budget from it. Annual billing drops Standard to $20 a month, invoiced at $249 a year.

QuickMail's ladder looks expensive at the entry rung and stops looking expensive the moment there is a second person or a second mailbox, because neither costs anything. Read the contact cap rather than the send cap: contacts are what the tiers actually meter, and a three-touch campaign consumes the send allowance three times as fast as a single-touch one.

Features Breakdown

GMass lists

• Works inside Gmail
• Unlimited emails, contacts, and campaigns
• Mail merge personalization
• Free email verification
• Automated follow-up sequences
• A/B testing
• and 3 more listed below

Both tools

• Inbox rotation

QuickMail lists

• Multichannel outreach (email, LinkedIn)
• Auto email warmup
• Blacklist monitoring
• AI-driven follow-ups
• Google-approved sending API
• Advanced analytics
• and 3 more listed below

GMass key features

• Works inside Gmail
• Unlimited emails, contacts, and campaigns
• Mail merge personalization
• Free email verification
• Automated follow-up sequences
• A/B testing
• Spam Solver deliverability tool
• Custom tracking links
• Inbox rotation
• API and Zapier access

QuickMail key features

• Multichannel outreach (email, LinkedIn)
• Inbox rotation
• Auto email warmup
• Blacklist monitoring
• AI-driven follow-ups
• Google-approved sending API
• Advanced analytics
• Unlimited team members
• Reply handling
• 14-day free trial

GMass's feature list is a Gmail list: mail merge from a spreadsheet, sequences, open and click tracking, an unsubscribe link, sending as an alias. Everything happens inside the interface you already use, which is the reason people like it.

QuickMail's is a platform list: inbox rotation, warm-up through its own network, a central reply inbox, workspaces for agencies, an API. The one to notice is rotation, because it is the mechanism that lets volume spread across addresses rather than concentrate on one.

Integration Ecosystem

GMass connects with: Gmail, Google Sheets, Zapier, Google Workspace.

QuickMail connects with: HubSpot, Pipedrive, Zapier, Make, Slack, Gmail, Outlook, Google Sheets.

Both tools integrate with: Gmail, Google Sheets, Zapier.

GMass integrates with Google, and that is close to the whole story: Sheets for the list, Gmail for the send, Drive for attachments. Anything beyond that goes through Zapier.

QuickMail integrates outward toward CRMs and webhooks and inward toward mailbox providers, because it has to hold both ends itself. If your list already lives in a spreadsheet and your CRM is light, GMass needs less wiring. If replies have to reach a CRM automatically, QuickMail does more of it natively.

Who Should Pick Which

Pick GMass for low-volume sending from a mailbox you own. Founder outreach, partner outreach, a few dozen a day from a real address that people can reply to. It is cheap, it is quick to set up, and there is nothing to migrate.

Pick QuickMail for a cold programme. Multiple mailboxes, rotation, a shared reply inbox and a team that can grow without a per-seat bill. That is what the product is for.

Pick QuickMail if there is an agency shape. Workspaces on Growth and Agency, plus unlimited users, are what a team running several clients needs.

Pick GMass if the requirement is that replies land in a human inbox. Sending from the account you read is a real advantage for warm outreach, and it disappears the moment you need ten addresses.

Where each one sits in a cold outbound stack

GMass sits in the sending slot for a single mailbox. QuickMail sits in the sending slot for many. Neither sources data, and neither decides who you write to.

Our own doctrine keeps that slot deliberately thin: one message per campaign, no bumps and no thread replies, and volume spread across many low-volume mailboxes so no single address carries too much. LinkedIn runs as its own motion rather than as a step inside an email sequence, because a second LinkedIn message lands under the one that was ignored and reads as a bump whatever the campaign structure says.

The practical read: if the plan needs more than about three sending addresses, the tool that lives inside one mailbox is the wrong shape, whatever its price says.

Switching between them

Moving from GMass to QuickMail is the common direction and is mostly a mailbox exercise. Export the contact lists and the unsubscribe record from Google Sheets, connect the sending addresses to QuickMail, and let warm-up run before the first campaign rather than after it.

Moving the other way is rare and simple, since GMass needs only a list and a mailbox.

In both directions the thing that does not migrate is reputation. A domain that has been sending badly stays a domain that has been sending badly, and the fix is new sending addresses with warm-up time, not a new interface.

Feature Comparison Summary

Getting Started Checklist

1. Count sending addresses first. One is a GMass question; ten is a QuickMail question.
2. Check your Google Workspace daily send limit before assuming GMass covers the volume.
3. Read QuickMail's contact cap, not its send cap, against the size of your list.
4. Confirm which currency the GMass page showed you before quoting its prices.
5. Count seats. QuickMail charges for none of them; GMass charges per mailbox.
6. Warm every new sending address before the first campaign, whichever tool sends it.

Final Thoughts

GMass is the right answer to a small question and QuickMail is the right answer to a larger one. The failure mode is buying the small answer for the large question and blaming deliverability when one overloaded mailbox stops landing.

Decide the mailbox count first. The tool follows from it.

Related Reading

• Best GMass alternatives
• Best QuickMail alternatives
• GMass vs Instantly
• GMass vs Smartlead
• Instantly vs QuickMail
• GMass vs Woodpecker

If you would rather have the sending run for you, RevenueFlow books qualified meetings on a pay-per-meeting basis and publishes client results.

Pricing and features are taken from the vendors' own pages. Verify current terms with the vendor before relying on them.