FAQ
Frequently asked questions about deliverability
The essentials on inbox placement, authentication and blacklists.
- What is email deliverability?
- Deliverability is your emails' ability to reach recipients' main inbox rather than the spam folder or the Promotions tab. It depends on authentication (SPF, DKIM, DMARC), your domain and IP reputation, and the quality of your content and lists.
- How does the placement test work?
- You send a test email to a set of seed addresses we host across different providers (Gmail, Outlook, etc.). We then detect which folder each email was sorted into, and derive an overall deliverability score out of 10.
- What are SPF, DKIM and DMARC?
- They are the three email authentication standards. SPF declares which servers may send on behalf of your domain. DKIM adds a cryptographic signature to each email. DMARC tells providers what to do when SPF or DKIM fails, and enables reporting. All three aligned are essential for good deliverability.
- What is a blacklist (RBL)?
- An RBL (Realtime Blackhole List) records IP addresses and domains associated with spam. If your server is listed, some of your emails will be blocked or sent to junk. We check the major ones: Spamhaus, Barracuda, SORBS, SpamCop and CBL.
- Is my data stored?
- No. The tool has no database: test sessions rely on a signed, ephemeral token valid for 30 minutes, and no address or result is stored persistently.
- What is warm-up and why do I need it?
- Warm-up means gradually increasing the sending volume of a new domain or address, with exchanges that simulate legitimate activity. This builds a positive reputation with providers. Without warm-up, even a perfectly authenticated domain often ends up in spam. BraiseInbox fully automates this process.
Ready to improve your deliverability?
BraiseInbox warm-up automatically heats up your domain and addresses to build a solid reputation with mailbox providers.