Glossary Deliverability
What is email deliverability?
Email deliverability is the share of the emails you send that land in the recipient's inbox, rather than in spam, a promotions tab or back with you as a bounce.
Delivery and deliverability are different. An email is delivered when the receiving server accepts it; it is deliverable in the useful sense only when it reaches the inbox where a person will see it.
Mailbox providers like Gmail and Outlook decide placement from many signals: whether your domain is authenticated, your sender reputation, how many of your emails bounce or are marked as spam, and how people engage with what you send.
Why it matters
- An email in spam is an email nobody reads, however good it is.
- Deliverability problems compound: low engagement hurts reputation, which pushes more mail to spam.
- Recovering a damaged sending domain takes weeks, so prevention is far cheaper than repair.
How Reach Crew handles it
Reach Crew sends from your own Gmail or Google Workspace mailbox, never a shared server, so your reputation is yours alone. It warms up a new mailbox slowly, checks every work email twice before writing, keeps the daily pace low, and pauses the mailbox if bounces or a spam complaint suggest something is wrong.
Related terms
- Sender reputation. Sender reputation is the trust that mailbox providers such as Gmail and Outlook place in a sending domain or...
- SPF. SPF (Sender Policy Framework) is a DNS TXT record that lists the mail servers allowed to send email for a...
- Bounce rate. Bounce rate is the percentage of sent emails that come back as undeliverable, usually because the address does...
- Email warm-up. Email warm-up is the practice of starting a new or quiet mailbox at a small number of emails a day and raising...
- Guide: Email warm-up and sending limits for a new mailbox