Private invite-only beta
Cold email and follow-ups from your own Gmail.
Write your email and follow-ups. ColdMerge fills in details from your list, spaces out the sends, and stops follow-ups when it detects a reply. You handle the conversations in your usual inbox.
No card required to start. Invited testers get the same 14-day free trial, and the plan is $0.99 a month if you subscribe. Trial details
Campaign emails are sent through your connected Gmail account and appear in its Sent folder.
Sending windows and gradual ramp-up are built in, with randomized gaps between messages.
Cancel yourself from the billing page. No ticket to file.
How it works
From your list to a conversation, in three steps.
Connect your Gmail account.
Connect Gmail or Google Workspace through Google's consent screen. Your campaign emails are sent from that account and appear in its Sent folder.
Takes about a minute. Revoke any time from your Google Account.
Illustration only. Actual Google consent capture is pending.
ColdMerge wants access to your Google AccountWrite your email and follow-ups.
Import your list, add fields such as a first name or company, and choose the gaps between follow-ups. Review your campaign before you start it.
One thread per person. Follow-ups reply to the original email.
Let the campaign run. Pick up the replies.
ColdMerge sends within your mailbox's allowance and sending window. Replies arrive in your usual inbox. When it detects a reply or bounce, it stops that person's remaining follow-ups.
What it takes off your plate
Keep the personal part.
Hand off the repetition.
For founders, freelancers and small sales teams who choose their prospects, write their own messages and handle the replies themselves. Sending each message and tracking every follow-up should not take the rest of your afternoon.
Merge fields
Personalize without starting from scratch.
Write the message once, with fields from your list. ColdMerge fills them in for every recipient, email and follow-ups alike. Watch it move through the list, or pick a person.
Keep follow-ups off your to-do list.
Choose the sequence and timing upfront. ColdMerge checks for replies and bounces so it can stop the remaining follow-ups when it detects either.
Manage your connected mailboxes together.
Run a campaign across several mailboxes from one place. ColdMerge distributes sends across them, subject to each mailbox's sending allowance.
Respect the people who opt out.
Campaign emails include an unsubscribe link. ColdMerge checks your suppression list before each send, so you do not have to maintain an extra “do not email” spreadsheet.
Campaign detail
A sequence that knows when to stop.
Each person moves through your sequence on their own timeline. The moment ColdMerge detects a reply or a bounce, the rest of that person's follow-ups are cancelled. Everyone else keeps going.
Sending controls
Slower on purpose. Clear about why.
A new mailbox starts at up to 20 emails a day in ColdMerge. Its allowance grows gradually as it ramps up. You can set your own daily cap and choose the hours it sends in, with a randomized gap between messages.
If a campaign is waiting, you can see which sending limit is holding it back. You do not have to guess why the next email has not gone out.
ColdMerge does not use a warm-up pool or manufacture conversations from your mailbox. It sends the campaign messages you configure, through your connected Gmail account.
These controls govern sending volume and timing. They do not guarantee inbox placement or prevent Google from restricting an account.
Workspace mailboxes can keep ramping past 100 sends a day.
Mailbox access
Know what you're connecting.
Connecting a mailbox is the biggest decision on this page. Here is exactly what ColdMerge asks for through Google's consent screen, what it does with it, and what it does not do.
Send email as you
Sends your campaign emails and follow-ups from the connected account. They appear in that account's Sent folder like any other message you send.
Read-only mailbox access
Detects replies and bounces so ColdMerge can stop follow-ups. This permission covers reading mail in general, not only campaign replies.
Basic account information
Your email address and basic profile, used to identify the mailbox inside ColdMerge.
You can revoke ColdMerge's access at any time from your Google Account permissions. Once revoked, ColdMerge can no longer send from or read that mailbox.
Compared
How ColdMerge differs from the alternatives.
Most of these send through Gmail too. The differences are where you work, how sending accounts are priced, whether a warm-up pool is involved, and how much control you get over pace.
| Basis | ColdMerge | GMass | Mailmeteor | YAMM | Instantly |
|---|---|---|---|---|---|
| Where you work | Its own web app. Sends through your connected Gmail or Workspace accounts. | Chrome extension inside Gmail. | Gmail extension, Google Sheets add-on, or its own dashboard. | Google Sheets add-on, sending through Gmail. | Its own web app. Connects many mailboxes, Gmail and others. |
| What you pay for | Connected sending inboxes. Plans are priced by inbox count, not per person. | Per user (one Gmail account). Team plans priced by seat. | Per user. | Per user, billed yearly. | Monthly email volume and uploaded contacts. Sending accounts are unlimited. |
| Entry price | $19 a month for up to 3 inboxes. | $29.95 a month (Standard, since January 2026). Follow-up sequences from Premium, $39.95. | Free plan at 50 emails a day. Paid from $5.99 a month; follow-ups from Premium, $17.99. | Free plan at 20 recipients a day. Personal plan $25 a year. | $47 a month (Growth: 1,000 contacts, 5,000 emails a month). |
| Automated follow-ups | Included in every plan. Stops on reply or bounce. | Premium and above. Stops on reply. | Premium and above. | Included on every plan. | Included. Stops on reply. |
| Several sending inboxes in one campaign | Yes. Sends are distributed across connected inboxes, each within its own allowance. | Yes, MultiSend inbox rotation on Professional, $59.95. | Yes, inbox rotation on Professional, $35.99. | No. One sender per campaign; more volume means more accounts. | Yes, unlimited accounts with rotation on every plan. |
| Ramp-up and sending windows | Built in. A new mailbox starts at 20 a day and you can see which limit is holding a campaign. | Scheduled and repeating sends. Its pricing page does not describe ramp-up. | Scheduling on every plan, with Autopilot pacing from Starter. | Scheduled mail merges. Daily volume follows the Gmail quota. | Its pricing page does not describe per-account limits or ramp-up. |
| Warm-up pool | No, by design. No synthetic conversations from your mailbox. | Not on its pricing page. | Yes, from Premium. | Not on its pricing page. | Yes, unlimited warm-up is included and central to the product. |
Competitor details are from each vendor's own pricing page, read on 14 September 2026 (GMass rechecked 28 September 2026), and may change. ColdMerge is not always the lowest-priced option: for a single mailbox, Mailmeteor's and YAMM's entry plans cost less. Instantly suits high-volume teams that want a warm-up pool; ColdMerge deliberately does not offer one.
Pricing
A private beta offer, then public plans.
During the private beta, invited testers get a 14-day free trial with no card required. After the trial, the Tester plan costs $0.99 a month if you choose to subscribe. The standard plans below will be available when public signup opens.
The Starter and Growth prices below apply when public signup opens.
Starter
$19/month
$190 a year
- Up to 3 connected inboxes
- Follow-ups, ramp-up, rotation, suppression
- Sending is never metered
Growth
$49/month
$490 a year
- Up to 10 connected inboxes
- Everything in Starter, plus your own tracking domain
- Sending is never metered
Need more than 10? $4 per extra inbox each month, so 15 inboxes is $69.See every inbox count
Your first campaign, set up with me. A 45-minute call with the co-founder: bring your Gmail account, a prospect list and a draft message, and we connect your mailbox, import your list and configure the sending window and follow-ups together. If something needs fixing before you send, we find it on the call.
Trial details
FAQ
Before you connect your mailbox.
Straight answers to the questions that matter most before you hand a tool your sending account.
Put your next campaign in motion.
Write the messages. Set the follow-ups. Handle the replies in Gmail.
No card required to start. Invited testers get the same 14-day free trial, and the plan is $0.99 a month if you subscribe.