MX-based ISP routing
The strategy resolves the recipient's live MX record and buckets them into Gmail / Yahoo / Outlook / Apple / Other. Domain-string routing lies (many domains front on Google Workspace); MX doesn't.
Read moreIndustries — E-commerce & Retail
Order and marketing mail routed by your buyer's ISP.
Route Gmail buyers, Yahoo buyers, and Outlook buyers each through their best-fitting provider — from the same store.
One rule per ISP
E-commerce & Retail
Four sendrules capabilities mapped to the pain that defines this segment. Every one of them is on the free plan.
- MX-based ISP routing
- Ramp-up with safety gates
- Order vs marketing on separate rules
- Autoresponder harvesting
The pain
What you deal with today.
Your buyers are on every major mail provider — Gmail dominates, but Yahoo and Outlook are still material. One provider that inboxes perfectly on Gmail may quietly get filtered on Yahoo. You never see it in your ESP dashboard because the mail was accepted; it just never reached the inbox.
How sendrules answers
What changes when you route through us.
sendrules classifies each recipient on the live MX record (not domain string) and picks the provider best warmed for that ISP. Gmail buyers can go through SES, Yahoo through SendGrid, everyone else through Postmark — from the same rule, same send, no code change.
The four capabilities
Feature per pain, not the other way round.
Ramp-up with safety gates
Warm a new provider automatically. Bounce and complaint thresholds pause the ramp before you burn a new IP. No hand-tuning required.
Read moreOrder vs marketing on separate rules
One rule for order confirmations (never gets rate-limited), another for marketing (can queue). Same providers, different limits — and marketing can never poison the transactional rail.
Read moreAutoresponder harvesting
OOO replies from B2B buyers frequently name the person covering. The parser turns those into a fresh contact list you can add to the next campaign — webhook or CSV.
Read moreWhere it lands
Concrete scenarios you can wire in this week.
- Order confirmations and shipping updates on their own rule so a Black Friday marketing burst can't rate-limit checkout mail
- Post-purchase upsell campaigns routed by recipient ISP — Gmail through the warmest Gmail-friendly provider, Yahoo through another
- Abandoned-cart mail with the quality gate rejecting typo'd addresses that would silently bounce
- B2B wholesale outreach with the autoresponder parser capturing OOO replies from buying teams
- Newsletter + campaign delivery with DMARC monitoring so a spoofing wave doesn't quietly kill your reputation
Also relevant
Other segments with similar shapes.
B2B SaaS
Transactional and product notifications across every provider you already pay for — with automatic failover.
Marketing Agencies & MSPs
Manage sending for thirty clients on their own provider accounts — one endpoint, per-client rules, no shared credentials.
Sales Development & Outbound
Verify every recipient in-line. Then parse every autoresponder reply for the person actually handling the account.
Recruitment & Staffing
Autoresponders from busy hiring managers routinely name the actual decision-maker. Capture them automatically.
Real Estate & Lead Gen
Property inquiry mail flowing both ways — outbound quality-gated, inbound classified and parsed for the buyer's real coordinates.
Financial Services
Statements, alerts, and regulator-facing correspondence with DMARC monitoring, signed webhooks, and a full audit log.
E-commerce & Retail teams start on the free plan.
Five thousand messages a month. Every feature above included. Attach your existing provider and see whether the numbers move.