#deliverability

Use the zone's ownership boundary as the deletion rule. If the customer owns the zone, delete only...

There are two ways to pull a school district off a learning platform when the contract ends: hunt for...

Short answer: Use custom-domain verification, DKIM, SPF, and DMARC before sending transactional...

When a customer-support tenant leaves, the dangerous operation is rarely deleting a DNS record. It is...

Short answer Short answer: for a small SaaS contact form, choose the email deliverability...

A support desk migration has one clock you don't control: the TTL on the records resolvers have...

Use one platform-owned zone, publish three TXT records per tenant subdomain, and let the mail service...

The clock that should drive your DNS TTL is not propagation speed. It's evidence. When you move...

The rule I apply to every custom domain onboarding flow is narrow: use the event driven webhook to...

Publish all three as TXT records and let a scheduled job re-apply them. The least complex thing that...

Short answer: enforce each tenant's domain limit in your application database, then reconcile that...

Pick a transactional email service you can drive over plain HTTP, verify the sending domain with SPF...