Get out of spam with AI-powered email warmup. Back in the inbox in three to six weeks.
Every campaign you send this week is paid for in full and read by almost no one, and your sequencer still says sent. Gmail and Outlook stopped trusting the domain. MailStrike rebuilds that trust: an AI Agent on each mailbox sends real threads through the MailStrike network, pulls your mail out of spam folders, and marks it important, until the providers change their verdict. Three to six weeks, depending on the damage.
How AI warmup gets you out of spam. Trust is rebuilt one signal at a time.
Real businesses with healthy reputations, exchanging real threads with yours.
Every thread that lands in a network spam folder is moved to the inbox, marked important, and read.
Each rescue and reply counts against the old verdict.
Rescues start on day one. Placement turns the corner from around week three, which is when the same sequences start producing again.
Six ways into spam. One way out: evidence.
Providers score the curve, not the total. A jump with no history behind it reads as a compromised or bulk sender, and the domain is filtered before anyone opens anything. The list you paid for is burned in a day.
Fix: ramp again from a volume you can holdSpam-trap hits and complaint rates are the fastest way into the spam folder and the slowest way out, because the provider now doubts every send from the domain. You pay twice: once for the list, then on every send after it.
Fix: stop the list, then rebuild the recordWithout the records aligned, a provider cannot tell your mail from a spoof, so it treats both the same way. Usually the quickest fix on this page.
Fix: the Email Auth Checker, freeBot-to-bot replies, identical timing, pooled inboxes. Google and Microsoft run machine-learning layers trained on exactly that, so the tool meant to help flagged the domain instead. The tool meant to protect the spend became the reason it was wasted.
Fix: agentic warmup, nothing to fingerprintOne phished password and a few thousand messages later, the domain carries a history it did not earn. Rotate the password, tighten the records, then re-warm.
See: hacked domain recoveryPlacement erodes when nobody engages. A list that stopped replying long ago teaches the provider that your mail is not wanted, one quiet send at a time. A year of sequences the team wrote for nobody.
Fix: engagement the provider can seeDo not buy a new domain yet. A new domain is the old bill again: the domain, the seats, a full 21-day ramp, and the same result if the cause is still there. A burned domain with history can be repaired. Start fresh only if it is listed across several blacklists or months deep in poor placement.
Three to six weeks, depending on the damage. Your pipeline does not have to stop for them. Keep sending at a volume you control, and scale as placement turns.
Every agent thread that lands in a network spam folder gets pulled out, marked important, and read. Each one is a recorded contradiction of the filter's verdict.
The provider's fresh evidence outweighs the old, and the placement chart turns the corner.
Placement holds across providers. Warming settles to maintenance volume and never stops, so the domain does not slide back.
PostNitroCase studyHalf their mail to Google was in spam. They had no idea.
One Free Deliverability Test found it. Eleven days of warming took PostNitro from 67% to 100% inbox placement at Google, and it has held since. Read the case study →
Half the Google audience they were paying to reach never saw them. Found by a free test, fixed in 11 days.
Questions that come up most.
What this page raises, answered plainly.
Can't find it here? Ask the team.
Usually one of six things: a volume spike, a bought or scraped list, broken authentication, templated warmup that got caught, a compromised mailbox, or months of low engagement. A Free Deliverability Test shows which provider is filtering you, and the free tools show whether authentication or a blacklist is the cause.
Three to six weeks, depending on the damage. Rescues start immediately, placement climbs from around week three, and warming continues at maintenance volume afterward so the domain does not slide back.
Moving mail out of spam and marking it important directly contradicts the provider's decision, and the provider records it for your domain. It is a positive signal, and one that opens-only warmup cannot produce.
No. Keep sending at a volume you control while warming runs alongside. Cutting to zero teaches the provider nothing. Steady, engaged volume is what changes its mind.
Rarely. A new domain starts at zero and needs the full 21-day ramp anyway, and you lose every address and thread. Start fresh only if the domain is listed across several blacklists or has been months deep in poor placement.
Yes, first. Authentication is the entry ticket. Without it, the rescues have less to build on. MailStrike checks the records when you connect and shows the exact value to publish.