20 questions across five categories. Takes 3 minutes. Instant score tells you exactly what is hurting your deliverability and what to fix first.
Multiple SPF records on one domain will cause authentication failures regardless of whether the content is correct.
1024-bit keys are considered outdated by major inbox providers as of 2024. A 2048-bit key significantly improves authentication reputation.
Even a monitoring-only DMARC record signals to inbox providers that you are actively managing your domain's email authentication.
Sending cold outreach from your primary domain (company.com) puts your entire email infrastructure at risk if reputation degrades.
Google's sending reputation system is highly sensitive in the first 7 to 14 days. Starting above 10 sends per day on a new Gmail inbox accelerates reputation flags.
Modern GTM standard: 10/day week 1, double every 5 daysWarmup tools generate positive engagement signals (opens, replies, removes from spam) that manual sending cannot replicate at the required frequency.
Brand new domains have zero sending history. Inbox providers treat them as high-risk by default. A minimum 21-day aging period with DNS properly propagated is the current standard.
Warmup is not a phase you complete. Running warmup alongside live campaigns continuously maintains a baseline of positive engagement signals.
Even lists sourced from premium databases like Apollo contain a percentage of invalid addresses. Unverified lists routinely carry 5 to 10 percent invalid rates.
No single verification tool catches everything. A second-pass tool using different validation methods can reduce remaining invalid emails by 40 to 60 percent further.
Catch-all domains accept all incoming email regardless of whether the address exists. They are unpredictable and can silently inflate bounce metrics without triggering standard bounces.
Google and Microsoft begin degrading sender reputation above 2% bounce rate. Sustained bounce rates above 5% can result in permanent deliverability penalties on a domain.
Even fully warmed Google Workspace accounts should stay at or below 50 cold sends per day to maintain a healthy positive-to-negative engagement ratio.
Gmail limit is 500/day total but cold email best practice is under 50/inbox/daySingle-inbox campaigns concentrate all negative signals on one address. Rotating across 5 or more inboxes distributes risk and allows individual inboxes to recover between send windows.
Sending 200 emails in a 2-minute window is a clear automated behavior signal. Human-mimicking random delays of 2 to 8 minutes between sends significantly reduce automated filtering.
If five people at company.com receive your email on the same day, the chances of an internal spam flag or admin block increase substantially. Spread domain contacts across multiple days.
Branded HTML email templates are designed for newsletters and transactional emails. In cold outreach, they trigger nearly every commercial email filter because they look automated.
Each additional link in a cold email multiplies the probability of spam filter flagging. One focused CTA outperforms three links in both deliverability and conversion.
Shared tracking domains (like trk.instantlyapp.com or similar) are used by thousands of senders simultaneously. If any of them send spam, your emails share their reputation penalty.
Deliverability problems are often invisible until significant damage is done. Placement tests show exactly what percentage of your emails land in primary, promotions, or spam across major providers.
We build and manage the entire infrastructure. Most clients go from broken deliverability to sub-2% bounce rates and inbox placement above 90% within 21 days.