Warming up
Mystrika is a growing cold email platform with a free warmup tier and built-in sending capabilities. Popular in outbound communities for its large warmup network and low entry cost — but its all-in-one positioning means the warmup layer shares attention with sequencing, analytics, and inbox rotation.
The cheaper, specialised alternative. Warmup-only, unlimited mailboxes, daily auth checks, 5-provider placement insight.
Email warmup bundled with a free-entry cold email sender.
| Warmerly | Mystrika | |
|---|---|---|
| Starting price (per month) | $19 | Free tier / ~$19+ paid (verify at mystrika.com) |
| Unlimited mailboxes | Yes, every plan | Limited on free; check paid tiers |
| Email warmup | Yes | Yes |
| Spam-folder rescue interval | Every 10 minutes | Check current docs |
| Reply with quoted history | Yes | Yes |
| Inbox placement seeds | 5 providers | Check current docs |
| Auth monitoring (SPF/DKIM/DMARC) | Daily, with remediation copy | Not a core feature |
| Reputation drop alerts | Email + webhook + Slack | Dashboard notifications |
| Built-in campaign sender | No | Yes |
| SMTP mailbox support | Gmail & Microsoft OAuth | Gmail, Outlook, SMTP |
| API access | Agency plan | Check current docs |
| USD/GBP billing & EU data residency | Yes | No |
| Free trial | 7 days, no charge until day 8 | Free tier available |
| Refund window | 30 days | Check their terms |
Mystrika's free tier is a reasonable starting point if you're warming a single mailbox with no budget. But as soon as you manage multiple mailboxes or care about daily auth monitoring, consistent spam rescue, and EU data residency, Warmerly is more focused and — at scale — more cost-effective. Warmerly's warmup-only design means every feature goes directly toward the thing that matters: keeping your mailboxes healthy and out of spam.
It depends on your setup. Mystrika is a reasonable starting point if you have one mailbox and want a free option. Warmerly is built exclusively for warmup and deliverability monitoring — it offers faster spam rescue, daily auth checks, and multi-provider placement testing that all-in-one tools typically deprioritise. For anyone managing more than one or two mailboxes, Warmerly's flat rate also becomes more economical than Mystrika's paid tiers.
Yes. Warmerly only handles the warmup and monitoring layer. You can run outbound sequences from Mystrika (or any other tool) while Warmerly warms and monitors the same Gmail or Microsoft mailbox in the background. There is no routing conflict and no DNS change needed.
Warmerly does not have a permanent free tier, but every plan includes a 7-day free trial with full feature access — not a limited preview — so you can evaluate warmup quality, spam rescue, and auth monitoring before committing. A card is required to start the trial, but you're not charged until day 8, and you can cancel anytime before then.
Disconnect your mailboxes from Mystrika, then connect them to Warmerly via the Google or Microsoft OAuth flow. Select a ramp curve that fits your current send volume and reputation stage. Mailbox reputation lives at Gmail and Microsoft, not at the warmup tool, so nothing is lost in the switch. Each mailbox takes around 2 minutes.
Mystrika markets a large peer network, and network size does matter. Warmerly's peer pool is smaller by count, but every peer is health-graded and bad actors are quarantined quickly. In practice, both tools will give you healthy peer pairings within a week. What Warmerly adds is deeper monitoring of what happens after warmup — auth checks, placement testing, and spam-folder rescue — that a large network alone does not provide.
Connect a mailbox to Warmerly in 60 seconds. 7-day free trial, card required, first charge on day 8. We will warm right alongside whatever you use now, so you can A/B without commitment.