Email deliverability consultant for outbound that lands in the inbox.

An email deliverability consultant finds out why email lands in spam or gets rejected, then fixes the cause. The work covers authentication (SPF, DKIM and DMARC), sending domains and mailboxes, list quality, volume and pacing, and monitoring. Growth Cab does it for B2B outbound teams on Google Workspace and Microsoft 365, starting from the evidence in message headers, bounce codes and provider data.

Falling open or reply rates alone cannot tell you. Check delivery errors, authentication results, domain reputation and spam complaints alongside controlled inbox tests. Google says it does not track open rates, and that low open rates aren't necessarily an accurate indicator of deliverability problems (source: Google, email sender guidelines). When all of those look healthy, review the list and the offer next.

It depends on what burned it. We find the cause first, because the same cause will damage any new domain too. Then we fix it, request delisting through the official channel where there is a listing, and restart at low volume. If outreach ran from your main domain, we move it to a sending domain clearly linked to your company, so the main domain carries far less of that risk.

Both. They filter in different ways, so we test on each one, read each mailbox provider's responses separately and tune the setup for both.

No. No infrastructure can guarantee inbox placement, and a vendor who promises it is usually selling volume. Every finding we report comes with its evidence: what we checked, what we fixed and the tests that show it worked.

After the repairs, plan on about three weeks of ramp: 5 messages per mailbox per working day in week one, up to 10 in week two and up to 15 in week three. Your steady daily volume is then the number of mailboxes times 15. Each step waits for green signals, so the calendar alone never raises volume. The audit comes first, and its length depends on how many domains and mailboxes you run.

We keep outreach off the domain your company runs on, so your sales, support and billing email depend less on how a campaign performs. Sending domains should still be clearly linked to your company, with real people behind every mailbox, because lookalike domains that hide who is writing create a risk of their own.

Not necessarily. Warmup tools create artificial engagement between mailboxes, and their settings come from the vendors that sell them. We treat warmup as optional and judge a mailbox by its real traffic: bounces, complaints and replies.

These rules cover mail sent to personal inboxes. Every sender to personal Gmail accounts needs SPF or DKIM and a spam rate below 0.3%. Bulk senders, around 5,000 messages a day to personal Gmail accounts, also need SPF, DKIM, a DMARC record and a From domain aligned with SPF or DKIM, plus one-click unsubscribe on marketing mail. Google recommends keeping spam rates under 0.1%. Yahoo has similar rules and asks senders to honor unsubscribes within two days, and Outlook.com requires SPF, DKIM and DMARC from senders above 5,000 messages a day. Business mailboxes on Google Workspace and Microsoft 365 filter with their own systems and admin settings, so we test them separately. Sources: Google, Yahoo and Microsoft sender guidelines.

B2B teams sending cold email from Google Workspace or Microsoft 365: when replies or meetings fell and nobody can say why, before adding mailboxes, domains or volume, or when the main domain carries sales, support and invoices and outreach needs to stay away from it. It does not fit newsletters to opted-in lists, anyone who wants a guaranteed inbox rate, or hundreds of throwaway domains to outrun the filters. We work with B2B tech companies past product-market fit, selling contracts of $50,000 or more.