Replying from your custom domain in Gmail
Receiving domain mail in Gmail is the easy half. Replying as info@yourdomain.com — reliably, out of the spam folder — is where it gets messy.
Way 1 — Gmail “Send mail as” (free, fiddly)
Add the address under Settings → Accounts, point it at smtp.gmail.com, authenticate with a Gmail App Password (2-Step Verification required — the step everyone gets stuck on). Works, but replies ride Google’s servers for a non-Google domain: without a correct SPF record on your domain, receivers get suspicious.
Way 2 — A transactional SMTP service
smtp2go, Resend or SES give you authenticated SMTP for the domain — proper SPF/DKIM. You configure DNS records per domain and wire each “send as” entry to it. Solid, but you have become your own email administrator.
Way 3 — Managed reply pipe
With All Your Inboxes you just hit Reply on the notification in Gmail. We verify the reply actually came from you (SPF/DKIM checked — a forged sender can’t speak as you), send it from your domain address in the same thread, and watch your domain’s spam-protection records daily. No App Passwords, no per-domain SMTP setup.
Why replies land in spam (whichever way you pick)
Three DNS records decide it: SPF (who may send), DKIM (signature), DMARC (policy). Missing or wrong records — the default state of DIY setups — quietly push your replies to spam. Check your domain free on our deliverability dashboard, or paste records by hand from any online SPF generator.
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