SendByte
SendByte is a transactional email API built specifically for African developers and businesses, distinguished from global providers like SendGrid, Mailgun, and Resend by fixed Naira-denominated pricing that doesn't move when the exchange rate does — SendByte absorbs the FX risk itself rather than passing dollar-price volatility on to Nigerian customers. The platform is positioned explicitly as "a Naira-priced Resend for Africa," targeting the gap between expensive dollar-billed global email APIs and local options that are mostly no-code dashboards or narrow OTP-token add-ons rather than full transactional email infrastructure.
Infrastructure is hosted in Africa rather than a US region, with API ingestion at the Nigerian edge via Cloudflare (~50ms) rather than routing through Virginia or Europe. This matters for Nigerian fintechs and SaaS platforms with NDPR (Nigeria Data Protection Regulation) obligations, since data residency is built into the core product rather than requiring a separate compliance workaround. The platform advertises AES-256 encryption at rest, TLS 1.2+ in transit, and audit logs on every dashboard action.
Domain authentication (SPF, DKIM, and DMARC) is generated and verified automatically rather than left to the developer to configure by hand — SendByte provides the DNS records to add, checks them automatically, and manages per-domain sender reputation with a branded Return-Path. New sending domains go through a warm-up period, with real-time status visible in the dashboard rather than being a black box.
Deliverability is measured, not just promised: SendByte runs seed inboxes at the major providers Nigerian users actually use (Gmail, Outlook, Yahoo, iCloud Mail, Zoho Mail) and reports where mail actually lands as a dashboard metric, rather than relying on a generic industry-wide deliverability claim. Every email's full lifecycle — queued, sent, delivered (with the actual SMTP response from the receiving server), opened, clicked, bounced, or complained — is visible as a timeline, with open and click tracking available per project (off by default, so OTP and receipt sends can stay untracked for privacy).
The API surface is deliberately small: one POST request to send an email, with sub-100ms API response time since delivery itself happens asynchronously. Every lifecycle event (queued, sent, delivered, opened, clicked, bounced, complained) is delivered as an HMAC-signed, replayable webhook, and every API error follows one consistent shape with a link to its own documentation page. Idempotency keys on the send endpoint mean a request can be safely retried without risk of double-sending. A full-parity sandbox mode (using sk_test_ keys) simulates the entire pipeline — including visible logs — without requiring a verified domain or sending real email, letting a developer send their first test email within minutes of signing up.
Official typed SDKs are available for Node.js, Python, PHP, and Go, with a Ruby SDK on the public roadmap; a plain REST API (api.sendbyte.africa/v1) covers every language not directly supported. Documentation is hosted on Mintlify with a full API reference, SDK guides, and step-by-step guides for domain verification, webhooks, and idempotency.
Billing is Naira-denominated across every tier and paid via Paystack or Flutterwave on a normal Nigerian card, activating within about a second with no invoices to chase. The free tier (3,000 emails/month, no card required) is enough to fully evaluate the product; paid tiers scale from ₦2,000/month up to ₦200,000/month for 1 million emails/month with a 99.9% uptime SLA, and a pay-as-you-go option (₦300 per 1,000 emails, ₦1,000 minimum top-up, balance never expires) suits low-volume production apps that don't want a monthly commitment. Add-ons (dedicated IPs, extra log retention, a custom tracking domain, an NDPR Data Processing Agreement, and managed IP warm-up) are priced the same fixed-Naira way rather than bundled into opaque enterprise tiers.