Warmup Inbox alternatives: five warm-up tools, each priced by its own unit

Warmup Inbox alternatives: the short answer

Warmup Inbox Basic is $19 a month for one inbox, billed monthly, with Pro at $59 and Max at $99. Five alternatives price against it: Warmforge at $12 a month for one slot, MailReach at $25 for one mailbox, lemwarm at $29 an address, TrulyInbox at $29 and Warmy from $49. All prices are billed monthly, in US dollars, as read on October 23, 2026.

Warmup Inbox's own price per inbox falls from the second inbox, so compare at your real inbox count, not at one. For a ranking by price, see cheapest email warmup tool.

Warmforge, priced per mailbox slot

Warmforge is $12 a month for one mailbox slot, billed monthly, $10 a month billed every 3 months and $9 a month billed annually. There is no free trial, its pricing page says, but each subscription comes with one free placement test a month, and test plans of 100 tests a month start at $39, billed monthly. For Salesforge users, Warmforge says you get unlimited mailbox slots to warm up.

One mailbox needs one slot, and placement can be checked first at no cost: GlockApps lists a $0 plan with 2 spam test credits, and Folderly lists Inbox Insights at $0 for 2 tests a month. Both are testers, not warm-up tools.

Unlimited accounts on one plan: TrulyInbox

TrulyInbox prices by daily warm-up volume with unlimited accounts. Starter is $29 a month, billed monthly, for 200 warm-up emails a day, and Growth is $99 for 1,000. Billed annually, Starter is $22 a month and Growth $84.

Its pricing page lists a free plan for one account at 10 warm-up emails a day, a 7-day trial on paid plans with no credit card required to start, in its words, and a 14-day money-back guarantee. That guarantee is TrulyInbox's own term.

Placement tests with warm-up: Warmy and MailReach

MailReach is $25 a month for one mailbox, billed monthly, with at least 20 spam test credits, and one credit buys one placement test. Warmy's plans start from $49 a month. Its comparison page lists 5 to 50 placement tests a month by plan, while its pricing page asks you to confirm the monthly allowance with Warmy's team.

Warmy's trial lasts 7 days on one mailbox, the same length as Warmup Inbox's own. The Terms convert it to a paid subscription unless you cancel before it ends, and they make fees non-refundable. Warmy has no free plan. See Warmy vs Warmup Inbox and Warmup Inbox vs MailReach for the pairings.

lemwarm for lemlist users

lemwarm prices per email address: Essential is $29 a month on monthly billing and $24 on yearly billing. Every lemlist plan includes lemwarm, and lemlist's Email plan lists an email warm-up and deliverability hub, so a lemlist sender gets warm-up without a separate bill.

• Warmforge for a $12-a-month slot.
• TrulyInbox for unlimited accounts and a free plan.
• Warmy or MailReach for placement tests with warm-up.
• lemwarm for a sender who already uses lemlist.