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Comparison
Instantly is a popular all-in-one cold email and warmup platform, with plans from $47 a month billed monthly.
The cheaper alternative with published prices: warmup included on every mailbox, daily SPF, DKIM and DMARC checks, and campaigns from the same mailboxes.
Cold email at scale, with warmup bundled.

| Warmerly | Instantly.ai | |
|---|---|---|
| Starting price (per month) | $19 | $47 |
| Mailboxes on starting plan | 5 | Unlimited |
| Emails per month on starting plan | Unlimited | 5,000 |
| Contacts on starting plan | 5,000 active prospects | 1,000 uploaded (a fixed limit across all campaigns) |
| Warmup emails | Unlimited | Unlimited |
| Spam-folder rescue interval | 10 minutes | Not published |
| Reply with quoted history | Yes | Not checked |
| Inbox placement seeds | Placement test, limited accuracy (no dedicated Gmail/Outlook seed list yet) | Gmail and Microsoft (Inbox Placement add-on, from $47 a month) |
| Health score timeline | Granular per event | Warmup health score, a rolling 7-day inbox rate |
| SPF/DKIM/DMARC monitoring | Daily, with remediation copy | On-demand Test Domain Setup check (MX, SPF, DKIM, DMARC); authentication checks also in the Inbox Placement add-on |
| Built-in campaign sender | Yes, no cap on sends | Yes |
| LinkedIn steps in the same sequence | Yes ($19/account) | Automations push leads to tools such as Aimfox, HeyReach, Expandi and Valley; the paid CRM add-on tracks LinkedIn connections |
| API access | Agency plan | All paid plans (webhooks on Hypergrowth and above) |
| USD/GBP billing & EU data residency | Yes | Not stated on its pricing or help pages |
| Free plan / trial | Free plan (no card), or a 7-day trial | 14-day free trial, no card (2 accounts, 250 leads, 1,000 emails) |
| Try before you pay | Free plan (no card) + 7-day trial; no refunds after the first charge | 14-day free trial, no card required |
Both warm your mailboxes and send your campaigns. Warmerly does it from $19 instead of $47, with no cap on sends and daily DNS monitoring, and adds LinkedIn steps to the same sequence (WhatsApp lives in the inbox). Instantly has the bigger brand and a longer track record at volume, and a native HubSpot integration. If you want to keep Instantly as your sender, Warmerly can also run warmup alone on the same mailboxes.
Yes. You can turn Warmerly's campaigns off and let it only warm the mailbox, while Instantly, lemlist, Apollo, Outreach or any other tool sends from the same Gmail or Microsoft account. Or you can move the sending into Warmerly and drop the second subscription.
Instantly does not publish the size of its warmup network, so we cannot compare the two. In Warmerly's network every peer is health-graded and bad peers are quarantined within 24 hours.
Disconnect the mailbox from Instantly, connect it to Warmerly with the mailbox connect flow, pick a ramp curve. Total time: under 2 minutes per mailbox. No DNS changes needed.
Connect a mailbox to Warmerly in 60 seconds. Free plan, no card required. Paid plans start with a 7-day trial, first charge on day 8, cancel any time before then. We will warm right alongside whatever you use now, so you can A/B without commitment.